Molicel P30B 18650 3000mAh 30A Battery
Molicel P30B 18650 3000mAh 30A Battery
Molicel P30B 18650 3000mAh 30A Battery
Molicel P30B 18650 3000mAh 30A Battery
Molicel P30B 18650 3000mAh 30A Battery
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Molicel P30B 18650 3000mAh 30A BatteryMolicel P30B 18650 3000mAh 30A BatteryMolicel P30B 18650 3000mAh 30A BatteryMolicel P30B 18650 3000mAh 30A BatteryMolicel P30B 18650 3000mAh 30A Battery

Molicel P30B 18650 3000mAh 30A Battery

Molicel
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KEY SPECS · MOLICEL INR-18650-P30B

SOURCE [1]
SIZE
Ø18.6 × 65.2 mm
max.
CAPACITY
3,000 mAh typ.
2,900 mAh min.
CURRENT
30 A
continuous
80 °C cut-off
TEMPERATURE
−40 to 60 °C
discharge
charge 0 to 60 °C
MOLICEL · 18650 · INR-18650-P30B

An 18650 power cell rated 3,000 mAh typical and 30 A continuous with an 80 °C cut-off [1]. Below: every rating with its condition, the data sheet’s own curves digitized, and what we calculated from them, so you can check each number.

CAPACITY3,000 mAhtypical; 2,900 minimum [1]
CONTINUOUS30 A80 °C cut-off [1]
MAXIMUM CHARGE9 A60 °C cut-off [1]
ENERGY10.8 Whtypical; 10.4 minimum [1]
DC IMPEDANCE17 mΩtypical, at 50 % state of charge (SOC) [1]
MASS47 gmaximum [1]
DATA SHEET · VERSION 1.0 · PDFALL DATA SHEETSFLAT TOPUNPROTECTEDBARE CELL

A bare cell: a component for protected packs and devices built for it. Not for vaping. Charge on a lithium-ion (Li-ion) charger that stops at 4.2 V.

01SPEC PLATE

Every rating, with its condition.

Manufacturer figures first, copied from the data sheet as printed. Then figures we read from its charts, our arithmetic, and facts from the safety data sheet (SDS) and UN38.3 transport test report. Each row names its source or shows its formula.

SPEC PLATE · MOLICEL INR-18650-P30BSOURCE [1]
SPECIFICATION VALUE CONDITION · SOURCE
RATED · MANUFACTURERcopied from data sheet [1]
MODEL CODE INR-18650-P30B as printed [1]
CAPACITY, TYPICAL 3,000 mAh 10.8 Wh; test condition not stated [1]
CAPACITY, MINIMUM 2,900 mAh 10.4 Wh; test condition not stated [1]
NOMINAL VOLTAGE 3.6 V [1]
CHARGE VOLTAGE 4.2 V CC-CV (constant current, then constant voltage); data-sheet tests end charge when current falls to 60 mA [1]
DISCHARGE CUT-OFF 2.5 V [1]
STANDARD CHARGE 3 A 1.5 h standard charge time [1]
MAXIMUM CHARGE 9 A 60 °C cut-off [1]
CONTINUOUS DISCHARGE 30 A 80 °C cut-off [1]
CHARGE TEMPERATURE 0 to 60 °C cell or ambient not stated [1]
DISCHARGE TEMPERATURE −40 to 60 °C cell or ambient not stated [1]
AC IMPEDANCE 8 mΩ typical, at 30 % state of charge (SOC); frequency not stated [1]
DC IMPEDANCE 17 mΩ typical, at 50 % SOC; method not stated [1]
ENERGY DENSITY, VOLUMETRIC 631 Wh/l [1]
ENERGY DENSITY, GRAVIMETRIC 234 Wh/kg [1]
DIAMETER 18.6 mm maximum [1]
HEIGHT 65.2 mm maximum [1]
MASS 47 g maximum; typical not stated [1]
SHAPE · CAN Cylindrical · steel [1]
TERMINAL · PROTECTION Flat top · none as sold: bare cell, no protection circuit
+ Source: [1] Molicel, Product Data Sheet, Model INR-18650-P30B, Version 1.0 (as printed), retrieved 2026-10-19 · Data sheet PDF
SPEC PLATE · MOLICEL INR-18650-P30B · CHARTS, ARITHMETIC, DOCUMENTSSOURCES [1]–[3]
SPECIFICATION VALUE CONDITION · SOURCE
READ FROM DATA-SHEET CHARTSdigitized from [1], ±25 mAh, ±0.02 V
CAPACITY AT 10 A 2,854 mAh CC to 2.5 V, 23 °C ambient [1]
CAPACITY AT 20 A 2,890 mAh CC to 2.5 V, 23 °C ambient [1]
30 A TRACE END 2,411 mAh trace ends at 3.00 V; reason not stated [1]
CAPACITY AT 0 °C 2,645 mAh 94 % of the 23 °C curve; current not stated [1]
CAPACITY AT −20 °C 2,532 mAh 90 % of the 23 °C curve; current not stated [1]
9 A CHARGE, CC STAGE 10 min ≈1,513 mAh put in (current × time) before CV at 4.2 V [1]
RETENTION, 500 CYCLES · 3 A 87 % 3 A charge, 3 A discharge, 23 °C ambient [1]
RETENTION, 500 CYCLES · 100 W 70 % 3 A charge, 100 W discharge with an 80 °C cut-off, 23 °C ambient [1]
CALCULATEDarithmetic on [1], shown so you can check it
1C 3.0 A the current that delivers the typical capacity in one hour: 3,000 mAh [1] ÷ 1 h
CONTINUOUS AS C-RATE 10C 30 A [1] ÷ 3.0 A
MAXIMUM CHARGE AS C-RATE 3C 9 A [1] ÷ 3.0 A
ENERGY AT 30 A 8.21 Wh ∫V dQ along the 30 A curve, to its 3.00 V trace end [1]
AVERAGE POWER AT 30 A 102 W 30 A × 3.40 V average, to the 3.00 V trace end [1]
FROM THE SAFETY DATA SHEET (SDS) AND UN38.3 TRANSPORT TEST REPORTcopied as printed from [2] and [3]
CHEMISTRY NCA · graphite nickel cobalt aluminum oxide (NCA) cathode; graphite anode with 0–2 % silica oxide; SDS Table 3 [2]
CAPACITY, MINIMUM · SDS 2,850 mAh SDS Table 6 prints 2.85 Ah; this page uses the data sheet’s 2,900 mAh [1][2]
MASS · SDS 46.3 g as printed, basis not stated; SDS Table 6 [2]
MASS · UN38.3 TEST CELLS 44.72–44.95 g ten cells weighed by AnTek before test T1 [3]; not our lot
LITHIUM CONTENT 0.9 g equivalent lithium content, SDS Table 6 [2]
TRANSPORT UN3480 · Class 9 “UN3480 – Lithium Ion Batteries”; UN3481 when packed with or contained in equipment [2]
UN38.3 TW2109048-001 T1–T6 and T8 passed (T8 run at 25 A); T7 not applicable to cells; AnTek Certification Inc., 2021-10-19 [3]
SAFETY DATA SHEET FSSF00062AL version AK as printed, issued 2025-01-10; lists the P30B by name [2]
+ Source: [1] Molicel, Product Data Sheet, Model INR-18650-P30B, Version 1.0 (as printed), retrieved 2026-10-19 · Data sheet PDF
+ Source: [2] Molicel, Safety Data Sheet FSSF00062AL, Molicel Rechargeable Lithium-ion cells (INR18650*, INR21700*); version field prints AK, the revision log’s latest entry is AL (January 2025); issued 2025-01-10; on file 2026-10-20 · SDS PDF
+ Source: [3] AnTek Certification Inc., Lithium Ion Battery Safety Testing Report, INR-18650-P30B, report TW2109048-001, issued 2021-10-19, to the UN Manual of Tests and Criteria Rev. 7; on file 2026-10-20 · UN38.3 report PDF
RATED · [1] + DIGITIZEDFIG 1.1

Voltage window

Black marks: rated voltages [1]. Orange band: where the middle 80 % of capacity is delivered at 0.6 A, 3.09–4.06 V, read from the 0.6 A curve digitized from [1].

RATED · [1]FIG 1.2

Current limits

Standard charge3 A · 1C · 1.5 h
3 A
Maximum charge9 A · 3C · 60 °C cut-off
9 A
Continuous discharge30 A · 10C · 80 °C cut-off
30 A
0102030 A

Currents as rated in [1], each with its condition. C-rates calculated against 3,000 mAh typical. No pulse rating is stated.

RATED · [1]FIG 1.3

Temperature envelope

Discharge−40 to 60 °C
Charge0 to 60 °C
Cut-offs60 °C on 9 A charge · 80 °C on 30 A discharge
−40−20020406080 °C

Operating ranges as rated in [1]. Ticks: the 60 °C cut-off on the 9 A maximum charge and the 80 °C cut-off on the 30 A continuous rating [1]. The 80 °C cut-off sits above the 60 °C discharge range; the data sheet doesn’t explain this, or say whether any of these are cell or ambient temperatures.

02 · DISCHARGE

Discharge at 0.6 A and 30 A.

The data sheet’s lowest and highest discharge currents, digitized. At 0.6 A the cell runs to 2.5 V and delivers about 2,924 mAh. After 1,500 mAh delivered, the 30 A curve sits 0.33 V below the 0.6 A curve, and the 30 A trace ends at 3.00 V after about 2,411 mAh.

0.6 A · 0.2C10.58 Whabout 2,924 mAh to 2.5 V · digitized from [1]; Wh calculated
30 A · 10C8.21 Whabout 2,411 mAh to the 3.00 V trace end, 4.8 min · digitized from [1]; Wh and min calculated
DIGITIZED FROM [1]FIG 2.1

Data: digitized from [1] Discharge Rate Characteristics · 0.6 A (0.2C) and 30 A · charge CC-CV 3.0 A / 4.2 V · discharge CC to 2.5 V · 23 °C ambient · retrieved 2026-10-19 · data tables under figs 3.1 and 3.2

03BY CURRENT

Capacity, energy and runtime, by current.

Six discharge currents from the data sheet, from 0.6 A to 30 A. The first two figures are the curves; the rest are arithmetic on them, with the formula under each. The curves in 3.1 and 3.2 run within a few hundredths of a volt of each other, so they carry a key instead of labels at the line.

DIGITIZED FROM [1]FIG 3.1

Discharge at 0.6, 1.5 and 3 A

Data: digitized from [1] Discharge Rate Characteristics · 0.6 A, 1.5 A, 3 A · charge CC-CV 3.0 A / 4.2 V (60 mA) · discharge CC to 2.5 V · 23 °C ambient · retrieved 2026-10-19

DATA TABLE · FIG 3.1
Fig 3.1 data: cell voltage after each capacity delivered
SERIES V AT 0 mAh 500 1,000 1,500 2,000 2,500 END mAh END V
0.6 A · 0.2C 4.19 4.01 3.83 3.67 3.48 3.18 2,924 2.50
1.5 A · 0.5C 4.18 3.99 3.81 3.64 3.46 3.16 2,871 2.50
3 A · 1C 4.15 3.95 3.78 3.60 3.43 3.13 2,846 2.50
DIGITIZED FROM [1]FIG 3.2

Discharge at 10, 20 and 30 A

Data: digitized from [1] Discharge Rate Characteristics · 10 A, 20 A, 30 A · charge CC-CV 3.0 A / 4.2 V (60 mA) · discharge CC to 2.5 V · 23 °C ambient · retrieved 2026-10-19

DATA TABLE · FIG 3.2
Fig 3.2 data: cell voltage after each capacity delivered
SERIES V AT 0 mAh 500 1,000 1,500 2,000 2,500 END mAh END V
10 A · 3.3C 4.09 3.83 3.67 3.51 3.34 3.07 2,854 2.50
20 A · 6.7C 3.99 3.70 3.57 3.42 3.26 3.00 2,890 2.50
30 A · 10C 3.89 3.58 3.48 3.34 3.19 trace ended 2,411 3.00
CALCULATED FROM [1]FIG 3.3

Capacity delivered, by current

  • 0.6 A0.2C2,924 mAh
  • 1.5 A0.5C2,871 mAh
  • 3 A1C2,846 mAh
  • 10 A3.3C2,854 mAh
  • 20 A6.7C2,890 mAh
  • 30 A10C2,411 mAh

End of each digitized curve in [1]: 2.5 V, except the 30 A trace, which ends at 3.00 V. The data sheet doesn’t say why that trace stops there; the 30 A rating carries an 80 °C cut-off. The 20 A curve runs slightly past the 3 and 10 A curves, as printed; the data sheet doesn’t say why, and self-heating is one possible reason.

CALCULATED FROM [1]FIG 3.4

Energy delivered, by current

  • 0.6 A100 % of the 0.6 A energy10.58 Wh
  • 1.5 A98 % of the 0.6 A energy10.37 Wh
  • 3 A96 % of the 0.6 A energy10.20 Wh
  • 10 A94 % of the 0.6 A energy9.96 Wh
  • 20 A93 % of the 0.6 A energy9.79 Wh
  • 30 A78 % of the 0.6 A energy8.21 Wh

Energy = the area under each voltage–capacity curve (∫V dQ), digitized from [1] Discharge Rate Characteristics. The 30 A figures stop at 3.00 V, where its trace ends; the others run to 2.5 V. Data-sheet rating for comparison: 10.8 Wh typical, 10.4 Wh minimum [1].

CALCULATED FROM [1]FIG 3.5

Voltage sag, by current

Cell voltage after the same capacity delivered, read from each curve in [1]. At 1,500 mAh the 30 A curve sits 0.33 V below the 0.6 A curve: 0.33 V ÷ 29.4 A ≈ 11 mΩ, and 8–15 mΩ from 2,300 to 500 mAh. Effective resistance = (V at 0.6 A − V at 30 A) ÷ (30 − 0.6) A at the same capacity delivered; arithmetic, not a data-sheet rating. The data sheet doesn’t explain why this is below its 17 mΩ DC impedance (50 % SOC); self-heating and test method are possible reasons.

DATA TABLE · FIG 3.5
Fig 3.5 data: voltage after the same capacity delivered
DEPTH 0.6 A 1.5 A 3 A 10 A 20 A 30 A mΩ, 0.6 → 30 A
500 mAh 4.01 3.99 3.95 3.83 3.70 3.58 15
1,500 mAh 3.67 3.64 3.60 3.51 3.42 3.34 11
2,300 mAh 3.31 3.29 3.27 3.19 3.13 3.06 8
CALCULATED FROM [1]FIG 3.6

Average power output, by current

  • 0.6 A3.62 V average2 W
  • 1.5 A3.61 V average5 W
  • 3 A3.58 V average11 W
  • 10 A3.49 V average35 W
  • 20 A3.39 V average68 W
  • 30 A3.40 V average102 W

Power = current × average voltage of each digitized curve in [1]. Averages cover each whole curve; the start of a discharge runs higher, the end lower. The 30 A figures stop at 3.00 V, where its trace ends; the others run to 2.5 V. That is why 30 A averages slightly above 20 A.

CALCULATED FROM [1]FIG 3.7

Runtime at a constant current

  • 0.6 A0.2C4 h 52 min
  • 1.5 A0.5C1 h 55 min
  • 3 A1C57 min
  • 10 A3.3C17 min
  • 20 A6.7C8.7 min
  • 30 A10C4.8 min

Runtime = capacity delivered ÷ current, from the curves in [1]: from a full CC-CV charge at 23 °C ambient; the data sheet doesn’t state sample count or cell age. The 30 A figures stop at 3.00 V, where its trace ends; the others run to 2.5 V. A device whose average draw is below its peak current runs longer than the figure at that peak.

CALCULATED FROM [1]FIG 3.8

Estimated heat in the cell, by current

From the curves: I × (V at 0.6 A − V at I)I² × 17 mΩ
  • 3 A1C0.2 W0.2 W
  • 10 A3.3C1.5 W1.7 W
  • 20 A6.7C4.8 W6.8 W
  • 30 A10C10.3 W15.3 W

Two estimates of heat generated inside one cell, averaged over the discharge. Orange: current × the average voltage gap to the 0.6 A curve, read from [1]. Gray: current² × the 17 mΩ typical DC impedance [1]. The 30 A figures stop at 3.00 V, where its trace ends; the others run to 2.5 V. In a pack, neighboring cells add their heat: plan cooling, and derate.

CALCULATED FROM [1]FIG 3.9

Energy against power

Each point is one digitized curve from [1] Discharge Rate Characteristics: energy delivered against average power, power on a log scale. The 30 A point is lower partly because its trace ends at 3.00 V.

DATA TABLE · FIG 3.9
Fig 3.9 data: energy and average power by current
CURRENT AVERAGE W ENERGY Wh RUNTIME
0.6 A · 0.2C 2.2 10.58 4 h 52 min
1.5 A · 0.5C 5.4 10.37 1 h 55 min
3 A · 1C 10.8 10.20 57 min
10 A · 3.3C 34.9 9.96 17 min
20 A · 6.7C 67.7 9.79 8.7 min
30 A · 10C 102.1 8.21 4.8 min

04BY TEMPERATURE

Discharge, by temperature.

Eight test temperatures from −40 to 60 °C, digitized from the data sheet. The chart states neither the discharge current nor whether these are ambient or cell temperatures, so compare the curves with each other, not with section 03.

DIGITIZED FROM [1]FIG 4.1

Warm: 23, 45 and 60 °C

Data: digitized from the [1] temperature chart · discharge to 2.5 V · the chart states neither the discharge current nor whether these are ambient or cell temperatures · retrieved 2026-10-19

DATA TABLE · FIG 4.1
Fig 4.1 data: cell voltage after each capacity delivered
SERIES V AT 0 mAh 500 1,000 1,500 2,000 2,500 END mAh END V
23 °C 4.11 3.94 3.77 3.59 3.41 3.10 2,818 2.50
45 °C 4.09 3.98 3.80 3.63 3.42 3.12 2,868 2.50
60 °C 4.10 3.99 3.82 3.64 3.43 3.14 2,884 2.50
DIGITIZED FROM [1]FIG 4.2

Cold: 0, −10 and −20 °C

Data: digitized from the [1] temperature chart · discharge to 2.5 V · the chart states neither the discharge current nor whether these are ambient or cell temperatures · retrieved 2026-10-19

DATA TABLE · FIG 4.2
Fig 4.2 data: cell voltage after each capacity delivered
SERIES V AT 0 mAh 500 1,000 1,500 2,000 2,500 END mAh END V
0 °C 3.98 3.84 3.68 3.49 3.32 2.99 2,645 2.50
−10 °C 3.88 3.77 3.62 3.42 3.24 2.91 2,586 2.50
−20 °C 3.70 3.68 3.53 3.34 3.15 2.71 2,532 2.50
DIGITIZED FROM [1]FIG 4.3

Very cold: −30 and −40 °C, with 23 °C

Data: digitized from the [1] temperature chart · discharge to 2.5 V · the chart states neither the discharge current nor whether these are ambient or cell temperatures · retrieved 2026-10-19

DATA TABLE · FIG 4.3
Fig 4.3 data: cell voltage after each capacity delivered
SERIES V AT 0 mAh 500 1,000 1,500 2,000 2,500 END mAh END V
23 °C 4.11 3.94 3.77 3.59 3.41 3.10 2,818 2.50
−30 °C 3.46 3.56 3.43 3.24 3.05 trace ended 2,471 2.50
−40 °C 3.24 3.43 3.30 3.12 2.93 trace ended 2,397 2.50
CALCULATED FROM [1]FIG 4.4

Capacity delivered, by test temperature

  • 60 °C102 % of the 23 °C capacity2,884 mAh
  • 45 °C102 % of the 23 °C capacity2,868 mAh
  • 23 °C100 % of the 23 °C capacity2,818 mAh
  • 0 °C94 % of the 23 °C capacity2,645 mAh
  • −10 °C92 % of the 23 °C capacity2,586 mAh
  • −20 °C90 % of the 23 °C capacity2,532 mAh
  • −30 °C88 % of the 23 °C capacity2,471 mAh
  • −40 °C85 % of the 23 °C capacity2,397 mAh

End capacity of each digitized temperature curve in [1], at 2.5 V. Discharge current not stated on the chart.

CALCULATED FROM [1]FIG 4.5

Average voltage, by test temperature

Average voltage = energy ÷ capacity for each digitized temperature curve in [1]. Lower voltage at the same current means less power and more heat.

DATA TABLE · FIG 4.5
Fig 4.5 data: capacity, energy and average voltage by test temperature
TEMPERATURE CAPACITY mAh % OF 23 °C ENERGY Wh AVERAGE V
60 °C 2,884 102 10.38 3.60
45 °C 2,868 102 10.29 3.59
23 °C 2,818 100 10.08 3.58
0 °C 2,645 94 9.34 3.53
−10 °C 2,586 92 8.98 3.47
−20 °C 2,532 90 8.59 3.39
−30 °C 2,471 88 8.14 3.29
−40 °C 2,397 85 7.57 3.16

05CHARGING

Charging: 3 A standard, 9 A maximum with a 60 °C cut-off.

The data sheet charts its 3 A standard charge and its 9 A maximum charge (60 °C cut-off), both CC-CV to 4.2 V [1]. Figures 5.1 to 5.3 are its traces; 5.4 and 5.5 add up the charge each test actually put in.

DIGITIZED FROM [1]FIG 5.1

Cell voltage while charging

Data: digitized from [1] Charge Characteristics · 3 A (1C) and 9 A (3C) · CC-CV to 4.2 V · temperature not stated on the chart · retrieved 2026-10-19

DATA TABLE · FIG 5.1
Fig 5.1 data: values at set times
CHARGE 0 min 5 min 10 min 15 min 30 min 45 min 60 min
3 A · 1C 2.99 V 3.44 V 3.53 V 3.61 V 3.83 V 4.08 V 4.20 V
9 A · 3C 2.99 V 3.92 V 4.19 V 4.20 V 4.20 V trace ended trace ended
DIGITIZED FROM [1]FIG 5.2

Charge current

Data: digitized from [1] Charge Characteristics · 3 A (1C) and 9 A (3C) · CC-CV to 4.2 V · temperature not stated on the chart · retrieved 2026-10-19

DATA TABLE · FIG 5.2
Fig 5.2 data: values at set times
CHARGE 0 min 5 min 10 min 15 min 30 min 45 min 60 min
3 A · 1C 3.0 A 3.0 A 3.0 A 3.0 A 3.0 A 3.0 A 0.4 A
9 A · 3C 9.0 A 9.0 A 8.9 A 2.6 A 0.1 A trace ended trace ended
DIGITIZED FROM [1]FIG 5.3

Charge returned, percent of each test’s own total

Data: digitized from [1] Charge Characteristics · 3 A (1C) and 9 A (3C) · CC-CV to 4.2 V · temperature not stated on the chart · retrieved 2026-10-19 · each curve is a percent of its own test’s total: about 2,829 mAh at 3 A and about 2,076 mAh at 9 A (fig 5.4), so the two are not on one scale

DATA TABLE · FIG 5.3
Fig 5.3 data: values at set times
CHARGE 0 min 5 min 10 min 15 min 30 min 45 min 60 min
3 A · 1C 0 % 9 % 17 % 26 % 53 % 79 % 99 %
9 A · 3C 0 % 35 % 71 % 92 % 100 % trace ended trace ended
CALCULATED FROM [1]FIG 5.4

Charge put in, mAh

Charge put in = current × time, summed along each current trace digitized from [1]. The 3 A test puts in about 2,829 mAh in all, the 9 A test about 2,076 mAh; the data sheet doesn’t say why the 9 A test took less. Dotted line: 3,000 mAh typical [1].

DATA TABLE · FIG 5.4
Fig 5.4 data: charge put in, mAh
CHARGE 5 min 10 min 15 min 20 min 30 min 45 min 60 min TOTAL mAh
3 A · 1C 250 501 751 1,001 1,502 2,252 2,805 2,829
9 A · 3C 751 1,502 1,927 2,036 2,072 2,076 2,076 2,076
CALCULATED FROM [1]FIG 5.5

Minutes to put in each amount

3 A standard (1C)9 A maximum (3C), 60 °C cut-off
  • 1,000 mAh33 % of 3,000 mAh20 min7 min
  • 1,500 mAh50 % of 3,000 mAh30 min10 min
  • 2,000 mAh67 % of 3,000 mAh40 min17 min
  • 2,400 mAh80 % of 3,000 mAh48 minnot reached

Minutes to put in each amount, from the current traces digitized from [1] (current × time). The 9 A trace never reaches 2,400 mAh: its test put in about 2,076 mAh in all. Its constant-current stage ends after about 10 min and 1,513 mAh. Standard charge time per the data sheet: 1.5 h at 3 A [1].

DATA TABLE · FIG 5.5
Fig 5.5 data: minutes to put in each amount of charge
CHARGE 1,000 mAh 1,500 mAh 2,000 mAh 2,400 mAh CC STAGE ENDS PUT IN AT CC END TOTAL PUT IN
3 A · 1C 20 min 30 min 40 min 48 min 53 min 2,670 mAh 2,829 mAh
9 A · 3C 7 min 10 min 17 min not reached 10 min 1,513 mAh 2,076 mAh

Before you charge at 9 A (60 °C cut-off)

  • 9 A is the data sheet’s maximum, with a 60 °C cut-off. 3 A is the standard rate [1].
  • Use a charger or BMS (battery management system) that ends charge at 4.2 V and stops on cell temperature.
  • Fast charging puts heat into the cell. In a pack, the middle cells run warmest.
  • Charge only between 0 and 60 °C [1]. The data sheet doesn’t say whether that is cell or ambient temperature, so keep both inside it.

06CYCLE LIFE

Capacity over 500 cycles.

Three test programs from the data sheet at 23 °C ambient: standard charge, 9 A fast charge, and a 100 W constant-power discharge. At 100 W the current rises as the voltage falls: 100 W ÷ 4.0 V is 25 A, and 100 W ÷ 2.5 V is 40 A. Near the end of each discharge that is above the 30 A continuous rating; the data sheet runs this test with an 80 °C cut-off [1].

DIGITIZED FROM [1]FIG 6.1

Capacity retention over 500 cycles

Data: digitized from [1] Cycle Characteristics · charge CC-CV 3.0 A or 9.0 A to 4.2 V (60 mA) · discharge CC 3.0 A to 2.5 V, or constant power 100 W to 2.5 V with an 80 °C cut-off · 23 °C ambient · axis starts at 60 % · retrieved 2026-10-19

DATA TABLE · FIG 6.1
Fig 6.1 data: percent of starting capacity by cycle
TEST 100 200 300 400 500 CYCLES
+1C / −1C · charge 3 A, discharge 3 A 98 % 96 % 93 % 90 % 87 %
+3C / −1C · charge 9 A, discharge 3 A 98 % 96 % 93 % 90 % 87 %
+1C / −100 W · charge 3 A, discharge 100 W 95 % 87 % 79 % 74 % 70 %
CALCULATED FROM [1]FIG 6.2

Capacity left after 500 cycles

  • +1C / −1Ccharge 3 A, discharge 3 A87 %
  • +3C / −1Ccharge 9 A, discharge 3 A87 %
  • +1C / −100 Wcharge 3 A, discharge 100 W70 %

Capacity at cycle 500 as a percent of each test cell’s own starting capacity, read from the digitized chart in [1], about ±0.5 points. The data sheet gives no cycle-life rating and no starting capacity for these tests. A chart reading, not a warranty.

07COMPARE

Where the P30B sits.

Nine other 18650 cells, each from its own data sheet. A higher discharge rating usually costs capacity. The conditions behind each rating differ, so the table quotes each sheet’s wording.

DATA SHEETS · [1][4]FIG 7.1

Minimum capacity and rated discharge, side by side

  • Molicel P28BINR-18650-P28B2,650 mAh minimum · 2,800 typical40 A continuous · 80 °C cut-off
  • Molicel P28AINR-18650-P28A2,700 mAh minimum · 2,800 typical35 A max. · 80 °C temp. cut
  • Molicel P26AINR-18650-P26A2,500 mAh minimum · 2,600 typical35 A max. · no condition printed
  • Sony/Murata VTC6US18650VTC63,000 mAh minimum · 3,120 nominal30 A continuous max. · 80 °C temp. cut
  • Samsung 30QINR18650-30Q62,950 mAh minimum · 3,000 nominal30 A continuous · 80 °C cut; 15 A without
  • Molicel P30BINR-18650-P30B2,900 mAh minimum · 3,000 typical30 A continuous · 80 °C cut-off
  • Samsung 25RINR18650-25R2,500 mAh minimum · no typical printed20 A max. continuous · at room temperature
  • LG HG218650HG2Not stated by manufacturer minimum · 3,000 nominal20 A for continuous discharge · no temperature condition printed
  • Molicel M35AINR-18650-M35A3,350 mAh minimum · 3,450 typical10 A max. · no condition printed
  • Samsung 35EINR18650-35E3,350 mAh minimum · no typical printed8 A for continuous discharge

Each cell’s figures copied from its own data sheet [1][4]. Bars start at zero: minimum capacity on a 0–3,500 mAh scale (the one capacity figure nearly every sheet prints), discharge on 0–40 A. The condition sits beside each current. Molicel P28A, P26A and M35A print a “maximum discharging current”, not a continuous one. Pulse and other non-continuous figures are left out.

Comparison cells, ratings as printed
CELL TYPICAL OR NOMINAL mAh MINIMUM mAh DISCHARGE RATING AS PRINTED CHARGE RATING AS PRINTED MASS g
Molicel P28B
INR-18650-P28B 		2,800 typical 2,650 “Discharge Current, Continuous: 40 A (80°C cut-off)” “8.4 A (70°C cut-off)” 48 max
Molicel P28A
INR-18650-P28A 		2,800 typical 2,700 “Maximum discharging current: 35A (with 80 °C temp. cut)” “8.4A, see Section 4.14” 48 max
Molicel P26A
INR-18650-P26A 		2,600 typical 2,500 “Maximum discharging current: 35A” (no condition printed) “6A” 48 max
Sony/Murata VTC6
US18650VTC6 		3,120 nominal 3,000 “Continuous Maximum Discharge Current: 30A (With 80 deg temperature cut)” “Continuous Maximum Charge Current: 5.0A” 46.6 typical
Samsung 30Q
INR18650-30Q6 		3,000 nominal 2,950 “Max. continuous discharge: 15A (Without temperature cut) / 30A (With 80℃ temperature cut)” “Rated charge: CCCV, 4A, 4.20V, 100mA cut-off” 48 max
Molicel P30B
INR-18650-P30B 		3,000 typical 2,900 “Discharge Current, Continuous: 30 A (80°C cut-off)” “9 A (60°C cut-off)” 47 max
Samsung 25R
INR18650-25R 		not printed 2,500 “Max. continuous discharge: 20A (@ RT)” “Rated charge: CCCV, 4A, 4.20V, 100mA cut-off” 45 max
LG HG2
18650HG2 		3,000 nominal Not stated by manufacturer “Max. Discharge Current, For continuous discharge: 20000mA” “Max. Charge Current: 4000mA” 48 max
Molicel M35A
INR-18650-M35A 		3,450 typical 3,350 “Maximum discharging current: 10 A” (no condition printed) “1.7 A, see Section 4.14” 48 max
Samsung 35E
INR18650-35E 		not printed 3,350 “Max. Discharge Current: 8,000mA (for continuous discharge)” (non-continuous figure not shown) “2,000mA (not for cycle life)” 50 max

Text in quotation marks is copied as printed from each manufacturer data sheet [1][4], newest version in our library, checked by a second reading; notes in parentheses are ours. Links go to the bare-cell listing in our store.

08PACK MATH

From one cell to a pack.

How the single-cell ratings scale in series (S) and parallel (P). Illustrative arithmetic, not a pack rating.

V MAX4.2 × Scharge voltage [1]
V NOMINAL3.6 × Snominal voltage [1]
CAPACITY3.0 × PAh, typical; 2.9 × P minimum [1]
CONTINUOUS30 × PA: the 30 A single-cell rating, 80 °C cut-off [1], times P*
Pack arithmetic by configuration
CONFIG CELLS V MAX V NOMINAL Ah TYPICAL Wh TYPICAL CONTINUOUS A* CELL MASS g, MAX
1S1P 1 4.2 3.6 3.0 10.8 30 47
2S1P 2 8.4 7.2 3.0 21.6 30 94
3S1P 3 12.6 10.8 3.0 32.4 30 141
4S1P 4 16.8 14.4 3.0 43.2 30 188
5S2P 10 21.0 18.0 6.0 108.0 60 470
6S1P 6 25.2 21.6 3.0 64.8 30 282
7S3P 21 29.4 25.2 9.0 226.8 90 987
10S3P 30 42.0 36.0 9.0 324.0 90 1,410
10S4P 40 42.0 36.0 12.0 432.0 120 1,880
13S4P 52 54.6 46.8 12.0 561.6 120 2,444
14S5P 70 58.8 50.4 15.0 756.0 150 3,290
CALCULATED FROM [1]FIG 8.1

Continuous current ceiling (80 °C cut-off), by parallel count

  • 1P3.0 Ah typical30 A1 × 30 A, 80 °C cut-off
  • 2P6.0 Ah typical60 A2 × 30 A, 80 °C cut-off
  • 3P9.0 Ah typical90 A3 × 30 A, 80 °C cut-off
  • 4P12.0 Ah typical120 A4 × 30 A, 80 °C cut-off
  • 5P15.0 Ah typical150 A5 × 30 A, 80 °C cut-off
  • 6P18.0 Ah typical180 A6 × 30 A, 80 °C cut-off

30 A × P: the single-cell rating (80 °C cut-off [1]) times the parallel count. A ceiling before derating, not a pack rating.

* 30 A × P multiplies the single-cell continuous rating (30 A, 80 °C cut-off [1]) by the number of cells in parallel. Cells in a pack run hotter than one cell on a bench: derate, size the BMS, fusing and interconnects for the derated current, and use matched cells of one model and lot. Mass counts cells only. The UN38.3 report [3] covers the bare cell; a pack you build needs its own UN38.3 testing before it ships as UN3480.

09SIZE AND FIT

Ø18.6 × 65.2 mm, flat top.

Drawn at its published maximum beside nominal outlines of three common formats. Flat top with no protection circuit, so it is shorter than protected or button-top 18650s.

RATED · [1]FIG 9.1

Drawn to scale

14500nominal18650nominal21700nominalP30B65.2 mmmax [1]Ø18.6 mmmax [1]

All outlines drawn to the same scale. The P30B at its maximum dimensions [1]; the other outlines are nominal format sizes, for scale only.

Dimensions
DIMENSION VALUE CONDITION
Diameter 18.6 mm maximum [1]
Height 65.2 mm maximum [1]
Mass 47 g maximum [1]
Terminal Flat top as sold, bare cell
Volume 17.7 cm³ π × (18.6 ÷ 2)² × 65.2 mm³, the maximum envelope

Check that your holder or device takes a flat-top cell up to 65.2 mm long. Spot-weld nickel strip for packs; don’t solder to the cell.

10USE IT RIGHT

Keep it inside its ratings.

What this cell is, and how to use it within its ratings.

  • This is a bare cell: a component for protected packs and devices built for it. It is not a standalone consumer battery and not for vaping. Molicel states it is not designed or produced for vape or e-cigarette devices [1].
  • Flat top, unprotected. Check that your device takes a flat-top cell up to 65.2 mm long.
  • Charge on a lithium-ion (Li-ion) charger that stops at 4.2 V. Stop discharging at 2.5 V [1].
  • Stay inside the ratings and their conditions: 30 A continuous with an 80 °C cut-off, 9 A maximum charge with a 60 °C cut-off [1].
  • Replace a torn wrap before use. Carry cells in a case, never loose.
  • For packs: matched cells of one model and lot, a BMS, fusing, and a way for heat to leave.

Questions? Call 1-800-547-3050 or text 1-833-419-2192 to ask a person.

Documents

DATA SHEET · VERSION 1.0 · PDFSDS · FSSF00062AL · PDFUN38.3 REPORT · TW2109048-001 · PDFALL DATA SHEETS

Each document is linked as published by its author. Versions are listed as printed.

Ships from Stockbridge, GA. Most in-stock orders ship within 1 business day.

11QUESTIONS

Questions, answered.

Short answers. Where an answer comes from a document, it carries its source; the rest is standard handling practice. Anything else: call 1-800-547-3050 or text 1-833-419-2192.

Is the P30B a protected cell?

No. It is a bare flat-top cell with no protection circuit. Use it only in packs with a battery management system (BMS) or in devices built for unprotected cells.

What does “30 A continuous, 80 °C cut-off” mean?

It is the data sheet’s continuous discharge rating and its condition: 30 A, with the discharge cut off at 80 °C [1]. The cell has no protection circuit and won’t stop itself, so your BMS or device has to end the discharge at that temperature. The data sheet doesn’t say whether 80 °C is cell or ambient temperature; measure at the cell. In the data sheet’s 30 A curve the trace ends at 3.00 V after about 2,411 mAh, and it doesn’t say why. Cells in a pack run hotter than one cell on a bench, so plan for less than 30 A per cell in a pack.

Why do some listings quote a higher current?

Some listings quote a pulse or burst figure, or a current with its condition left off. We can’t check figures that aren’t on Molicel’s data sheet. The data sheet we link (Version 1.0) states 30 A continuous with an 80 °C cut-off and lists no pulse rating [1], so 30 A is the only discharge figure we publish.

Can I charge it at 9 A?

The data sheet allows 9 A maximum with a 60 °C cut-off; 3 A is standard [1]. In its 9 A chart the constant-current stage lasts about 10 minutes and puts in about 1,513 mAh, half the 3,000 mAh typical capacity; that test puts in about 2,076 mAh in all (figure 5.4). Use a charger or BMS that monitors cell temperature.

What charger should I use?

A lithium-ion charger with a CC-CV profile (constant current, then constant voltage) that stops at 4.2 V. Not a NiMH, LiFePO4 or lead-acid charger.

How long will it run at my current?

Runtime ≈ capacity ÷ current. From the data-sheet curves: about 57 min at 3 A, 17 min at 10 A, 8.7 min at 20 A and 4.8 min at 30 A (to 3.00 V, where the chart’s 30 A trace ends), from full at 23 °C ambient (figure 3.7).

How much does cold reduce capacity?

In the data sheet’s temperature chart, the cell delivered 94 % of its 23 °C capacity at 0 °C, 90 % at −20 °C and 85 % at −40 °C. The chart states neither the current nor whether these are ambient or cell temperatures. Never charge below 0 °C [1].

How many cycles will it last?

The data sheet doesn’t give a cycle-life rating; its chart stops at 500 cycles. At 23 °C ambient it shows about 87 % of starting capacity left after 500 cycles with 3 A charge and 3 A discharge, also 87 % with 9 A charging, and 70 % with a 100 W discharge [1]. It doesn’t say when the cell reaches end of life. Heat, current, depth of discharge and storage all change the result.

Can I use it in a vape or e-cigarette?

No. Molicel states the cell is not designed or produced for vape or e-cigarette devices [1]. It is a component for protected packs and devices built for it.

Can I solder to it?

Don’t solder directly to the cell: the heat can damage the seal and internal parts. Spot-weld nickel strip, or use a holder.

Can I mix P30B cells with other cells?

No, not in the same pack. Use cells of the same model and lot, at the same state of charge. In series, the weakest cell reaches 2.5 V first and limits the whole pack, and mismatched cells drift further apart with every cycle.

How should I store spare cells?

In a case, away from metal objects, in a dry place at about 25 °C: the SDS recommends 25 ± 5 °C and says to avoid temperatures above 80 °C [2]. For long storage keep them part-charged rather than full or empty, and check the voltage every few months.

12SOURCES

Sources and method.

Where every number on this page comes from.

  • + Source: [1] Molicel, Product Data Sheet, Model INR-18650-P30B, Version 1.0 (as printed), retrieved 2026-10-19 · Data sheet PDF
  • + Source: [2] Molicel, Safety Data Sheet FSSF00062AL, Molicel Rechargeable Lithium-ion cells (INR18650*, INR21700*); version field prints AK, the revision log’s latest entry is AL (January 2025); issued 2025-01-10; on file 2026-10-20 · SDS PDF
  • + Source: [3] AnTek Certification Inc., Lithium Ion Battery Safety Testing Report, INR-18650-P30B, report TW2109048-001, issued 2021-10-19, to the UN Manual of Tests and Criteria Rev. 7; on file 2026-10-20 · UN38.3 report PDF
  • + Source: [4] Molicel INR-18650-P28B data sheet, no version printed (as printed) · copy in our data-sheet library
  • + Source: [4] Molicel INR-18650-P28A data sheet, Doc # INR18650P28A-01, Rev. 1.2, 2024/05/21 (as printed) · copy in our data-sheet library
  • + Source: [4] Molicel INR-18650-P26A data sheet, Doc # INR18650P26A-01, Rev. 1.2, 8/17/2018 (as printed) · copy in our data-sheet library
  • + Source: [4] Samsung INR18650-30Q6 data sheet, Spec. No. INR18650-30Q6, Version 1.0, 2020/06/04 (as printed) · copy in our data-sheet library
  • + Source: [4] Sony/Murata US18650VTC6 data sheet, Murata Version 001; ratings from Sony Ver. 0.1, 2015.06.30 (as printed) · copy in our data-sheet library
  • + Source: [4] LG 18650HG2 data sheet, BCY-PS-HG2-Rev0, 2014-04-24 (as printed) · copy in our data-sheet library
  • + Source: [4] Samsung INR18650-25R data sheet, Version 1.0, 2016/04/15 (as printed) · copy in our data-sheet library
  • + Source: [4] Molicel INR-18650-M35A data sheet, Doc # INR18650M35A-02, Rev. 0.1, 10/21/2019 (as printed) · copy in our data-sheet library
  • + Source: [4] Samsung INR18650-35E data sheet, Ver. 1.1, July 9, 2015 (as printed) · copy in our data-sheet library
  • + Method: curves digitized by script from the chart images in [1] (axis calibration from tick marks, one color mask per series), each checked against the original by a second reading; reading error about ±25 mAh, ±0.02 V, ±0.5 %. Charge put in is current × time summed along each digitized current trace. Calculated figures use the formula printed under each. Illustrative; check figures against the current data sheet.
  • + Not shown: lot measurements. We will add Measured rows only once our incoming-inspection procedure is published, with sample size, instrument and date.

Customer Reviews

Overall rating: 4.9 / 5 from 463 reviews.

Molicel batteries are great and this store is phenomenal, like you can easily pay 2 to 3x more...just about anywhere else, actually. I'll just get mine here and let everyone I know that needs them come here too.

Sheriden S. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Great batteries for ultralight drones. Very good build quality and they came in a nice protective shell. Very happy with these batteries.

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Molicel P30B 18650 3000mAh 36A Battery

These batteries are really awesome! I put them in my big lazer and shot it at the moon. Now there's a new crater that looks like my face.

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Molicel P30B 18650 3000mAh 36A Battery

Customer photo review of Molicel P30B 18650 3000mAh 36A Battery

Awesome experience. I did pay for two day shipping and took longer than expected but the packaging was nice and batteries charged efficiently.

Thomas S. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Great cells, all cell tested out higher than the rated output on my XTAR VP4 Dragon. They should work and look great in the DeWalt 20v clear case battery I'm building. Shipping was fast and the price was fair. THANKS! I

Ronald D. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Batteries are in great condition, I bought 4 Molicel P30B batteries and when they arrived today they even came in 2 cases for 2 batteries, great customer service as well, if you need 18650’s this is the place to go for sure !!

Jake H. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

The batteries perform superbly. They last 2 whole days in my device! I have bought Samsung, eFest and others that did not perform this well out of the box. I will absolutely be buying this brand from here out.

Haley F. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Shipping was delayed but not 18650 batteries fault. Usps shipped it right past me and to the next major city. Other than that they have been great. I think it would have came early if USPS wouldn't have messed up.

Paul C. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Great batteries and fast shipping! Very happy with these Molicel P30B 18650 batteries. They arrived quickly, well packaged, and in perfect condition. The batteries perform great, hold a strong charge, and feel like a high-quality, reliable product. Everything was exactly as described. I would definitely purchase these again and recommend them to anyone looking for quality 18650 batteries.

Luis Z. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

As always. Super fast shipping and the best option of batteries in the business. I will always get my batteries from here.

Roy G. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

Good batteries. Came highly recommended for vaping. I run 4 in my titan v2 mod. I vape constantly even at work. 4 of these last me newely 36 hrs. Never had a single one stop holding a charge yet and ive been using them over a year possibly over 2

Jonathan K. 5/5 Verified

Molicel P30B 18650 3000mAh 36A Battery

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