Samsung 58E 21700
5330mAh / 10.7A CDR
A high-energy lithium-ion cell designed for long runtime, high watt-hour density, stable moderate-current output, and scalable 21700 battery-pack integration in protected electronic systems.
Samsung INR21700-58E: high-capacity 21700 cell for runtime-driven packs.
The Samsung 58E is engineered for systems that need more energy per cell while keeping current demand in a controlled low-to-moderate range. It is a strong candidate for battery packs, backup modules, power banks, energy storage assemblies, lighting systems, and mobility packs where pack-level protection and thermal design are properly specified.
| Core Parameter | Technical Value |
|---|---|
| Manufacturer / Model | Samsung SDI INR21700-58E / CC5493F101 specification reference |
| Cell Format | 21700 cylindrical, flat top, unprotected lithium-ion cell |
| Standard Capacity | 5330mAh minimum at 0.2C discharge to 2.5V after standard charge |
| Rated Capacity | 5170mAh minimum at 1C discharge to 2.5V after standard charge |
| Nominal Voltage | 3.64V |
| Continuous Discharge | 2C / 10.66A, commonly rounded to 10.7A continuous |
| Charge Method | CC-CV to 4.20V; 0.5C standard charge current |
| Dimensions | 21.78mm maximum diameter × 71.00mm maximum height |
| Protection Circuit | None. Requires compatible device-level or pack-level protection. |
Voltage, current, and charge-control operating window.
Use the following values as the product-page engineering reference. Final pack design should be validated against the latest manufacturer data sheet, protection electronics, enclosure airflow, thermal paths, and application duty cycle.
Cell Voltage Window
Single-cell operating endpoints for charge and discharge control.
Charge Profile
Standard and maximum charge settings from Samsung 58E specification.
How the 58E's C-rate values convert into real design limits.
Samsung defines 1C as 5.33A for the 58E. The continuous discharge limit is 2C / approximately 10.66A. The 3C / approximately 15.99A value is explicitly not for continuous discharge and should not be used as the continuous pack-design rating.
C-Rate to Current Map
Reference currents derived from the 1C = 5.33A definition.
Approximate Constant-Current Runtime
Idealized runtime using 5.33Ah standard capacity. Actual runtime changes with voltage sag, temperature, cut-off, and pack design.
Per-Cell Power at Nominal Voltage
Approximate electrical output using 3.64V nominal voltage.
Current Design Guidance
Keep the average and continuous current at or below the rated envelope after thermal derating.
Capacity retention metrics for long-runtime systems.
Capacity Reference Levels
Samsung specification values for standard, rated, cycle, and storage recovery capacity.
Energy Estimate
Approximate watt-hours using 3.64V nominal voltage plus the listed 20.0Wh typical energy class.
Cycle-Life Criterion
Samsung criterion: capacity ≥4.136Ah after 500 cycles under listed charge/discharge conditions.
Storage Recovery & Shipping Band
Reference values for storage recovery and ex-factory voltage.
Rate capability and temperature dependence.
Discharge Rate Capability
Relative capacity after standard charge at 23°C, discharged to 2.5V.
Temperature Dependence
Relative capacity at 1C discharge after standard charge at 23°C.
Operating Temperature Envelope
Ambient operating range with pack-level thermal protection required.
Internal Impedance & Heat Planning
Initial impedance limit and heat-design notes for pack builders.
21700 dimensional envelope for holders, spacers, and welded packs.
Cell Envelope Diagram
Maximum dimensions from the CC5493F101 specification reference.
| Mechanical Item | Integration Guidance |
|---|---|
| Format | 21700 cylindrical cell; confirm device supports 21700 cells, not 18650 only. |
| Diameter | Use 21.78mm maximum for holder, sleeve, and pack-spacing clearance. |
| Height | Use 71.00mm maximum for enclosure and contact stack-up tolerance. |
| Terminals | Flat top; check spring contact geometry and polarity orientation. |
| Pack Assembly | Use properly engineered spot-welded interconnects. Do not solder directly to the cell. |
| Protection | The cell is unprotected. Finished packs should include BMS, fusing, insulation, and thermal controls. |
Scaling formulas for series and parallel battery packs.
The values below are simplified engineering calculations for initial planning. Finished packs require cell matching, BMS selection, fusing, insulation, thermal testing, enclosure validation, and compliance review.
Vnom = S × 3.64VSeries cells increase nominal voltage.
Ah = P × 5.33AhParallel cells increase capacity.
Icont = P × 10.7AParallel cells increase continuous current before derating.
Wh ≈ S × P × 19.4WhMinimum standard capacity estimate; spec lists 20.0Wh typical class.
Example Pack Scaling
Illustrative values only; actual pack limits depend on BMS and thermal derating.
| Configuration | Nominal System Estimate |
|---|---|
| 1S1P | 3.64V / 5.33Ah / 10.7A / ≈19.4Wh |
| 4S2P | 14.56V / 10.66Ah / 21.3A / ≈155Wh |
| 7S3P | 25.48V / 15.99Ah / 32.0A / ≈408Wh |
| 10S4P | 36.4V / 21.32Ah / 42.6A / ≈776Wh |
Pack Protection Flow
Recommended engineering workflow for lithium-ion pack integration.
Best-fit use cases for the Samsung 58E.
Energy Storage
Runtime-focused modules for backup power, solar storage, and stationary battery systems.
Power Banks
High-capacity portable power designs where long runtime is prioritized over extreme current.
Mobility Packs
E-bike and light mobility packs with adequate parallel count, BMS protection, and thermal validation.
LED Lighting
Lanterns, work lights, and long-duration LED systems requiring efficient energy storage.
Instrumentation
Industrial, test, and medical-adjacent devices requiring reliable moderate-current operation.
Backup Modules
Protected backup packs where energy density, charge control, and cell balancing are engineered.
Remote Electronics
Sensor, telemetry, and communications hardware with controlled charge and discharge limits.
Custom Packs
Experienced pack builders using matched cells, spot welding, and properly rated safety electronics.
Samsung 58E specification table.
| Specification | Samsung 58E Technical Detail |
|---|---|
| Product Name | Samsung 58E 21700 Battery, 5330mAh, 10.7A |
| Samsung Specification Reference | CC5493F101, lithium-ion rechargeable cell |
| Cell Type | Rechargeable lithium-ion cylindrical cell |
| Size | 21700 |
| Standard Discharge Capacity | ≥5330mAh, measured at 0.2C discharge to 2.5V after 0.5C standard charge |
| Rated Discharge Capacity | ≥5170mAh, measured at 1C discharge to 2.5V after standard charge |
| Typical Energy Class | 20.0Wh listed in the standard-capacity line |
| Nominal Voltage | 3.64V |
| Full Charge Voltage | 4.20V |
| Charge Method | CC-CV, constant voltage with limited current |
| Standard Charge Current | 0.5C / 2665mA |
| Standard Charge Time | Approximately 4 hours under specified condition |
| Maximum Charge Current | 1C / 5330mA; not for cycle-life condition |
| Charge Termination | 0.02C cut-off under standard charge condition |
| Maximum Continuous Discharge | 2C / 10.66A, commonly rounded to 10.7A continuous |
| Non-Continuous Discharge Reference | 3C / 15.99A; not for continuous discharge |
| Discharge Cut-off Voltage | 2.5V end-of-discharge voltage |
| Initial Internal Impedance | ≤15mΩ measured at AC 1kHz after standard charge |
| Cycle Life Reference | Capacity ≥4136mAh after 500 cycles under listed 0.5C charge and 1C discharge condition |
| Storage Recovery Reference | Capacity recovery ≥4797mAh after 20 days at 60°C, then 0.2C discharge to 2.5V |
| Weight | 74g maximum |
| Dimensions | Max. 21.78mm diameter × max. 71.00mm height |
| Charge Temperature Range | 0°C to 45°C ambient |
| Discharge Temperature Range | -10°C to 60°C ambient |
| Storage Temperature Guidance | 1 year: -20~23°C; 3 months: -20~45°C; 1 month: -20~60°C at ex-factory status |
| Ex-Factory Voltage | 3.54V to 3.64V charging voltage range |
| Protection | Unprotected cell; use suitable device or pack protection |
| Assembly Method | Do not solder directly to the cell; use properly designed spot-welded interconnects |
Professional lithium-ion handling requirements.
Required Practices
- Use only with a charger designed for 4.20V lithium-ion cells.
- Keep current, voltage, and temperature within manufacturer limits.
- Use an appropriate BMS or protection circuit in battery packs.
- Store and transport cells in protective cases, never loose with metal objects.
- Inspect wrappers, insulators, and terminal rings before every installation.
- Use proper spot welding for pack assembly; avoid heat damage to terminals.
Do Not
- Do not short-circuit, overcharge, over-discharge, crush, puncture, or incinerate.
- Do not use a cell with damaged wrap, denting, leakage, rust, or abnormal heat.
- Do not mix old and new cells, different models, different batches, or mismatched states of charge.
- Do not solder directly to the cell body or terminals.
- Do not leave cells charging unattended or on combustible surfaces.
- Do not use in e-cigarettes, vaporizers, or similar devices.
- Do not use in any device that exceeds the cell's current, thermal, or voltage envelope.
Samsung 58E FAQ
Is the Samsung 58E a 5330mAh or 5800mAh cell?
This product listing is for the 5330mAh Samsung 58E / CC5493F101 cell. Use 5330mAh minimum standard capacity and 5170mAh minimum rated capacity for technical calculations.
What is the continuous discharge rating?
The continuous discharge rating is 2C, which is approximately 10.66A and commonly rounded to 10.7A per cell.
What does the 3C rating mean?
The 3C value is a non-continuous discharge reference. It should not be used as the continuous current rating for devices, battery packs, or product copy.
Is the Samsung 58E protected?
No. This is an unprotected industrial cell. It does not include built-in over-charge, over-discharge, over-current, short-circuit, or thermal protection.
What charger should I use?
Use a quality lithium-ion charger that supports CC-CV charging to 4.20V. Standard charge current is 0.5C / 2.665A; maximum charge current is 1C / 5.33A under specified conditions.
What is the discharge cut-off voltage?
The specified end-of-discharge voltage is 2.5V per cell. A BMS or compatible device should prevent the cell from being over-discharged below this point.
How much energy does one cell store?
Using 5.33Ah minimum standard capacity and 3.64V nominal voltage, one cell stores approximately 19.4Wh. The specification also lists a 20.0Wh typical energy class.
What devices are best for the 58E?
The 58E is best for long-runtime, moderate-current systems such as energy storage packs, power banks, backup modules, LED lighting, instrumentation, and professionally designed multi-cell mobility packs.
Is it good for high-drain applications?
Not as a single-cell high-drain option. Choose the 58E when energy density and runtime matter most. For very high current, use more cells in parallel or select a cell designed for higher continuous discharge.
Will it fit in an 18650 device?
No, not unless the device specifically supports 21700 cells. The 58E is physically larger than an 18650, with a manufacturer maximum of 21.78mm diameter and 71.00mm height.
Can I use this cell in an e-bike or scooter pack?
Yes, when the pack is professionally designed with adequate parallel count, a correctly rated BMS, cell balancing, fusing, thermal design, and mechanical protection. Do not treat a loose cell as a complete protected battery pack.
Can this be used in e-cigarettes or vaporizers?
No. Do not use this cell in e-cigarettes, vaporizers, or similar devices. Use only in compatible equipment that stays within the cell specification.
Can I solder directly to the cell?
No. Direct soldering can overheat the cell and damage safety-critical internal structures. Pack assembly should use properly designed spot-welded nickel or nickel-plated interconnects.
Can I mix Samsung 58E cells with other cells?
No. Do not mix models, ages, capacities, internal resistance values, batches, or states of charge in a battery pack. Use matched cells and maintain balanced groups.
What temperature range can it operate in?
Samsung specifies 0°C to 45°C for charging and -10°C to 60°C for discharging. Finished packs should include thermal monitoring and protection.
How should the cells be stored?
Store cells in a cool, dry place in protective packaging or cases. For longer storage, cooler temperatures are preferred and cells should be isolated from conductive objects.
Is this safe to carry loose?
No. Never carry loose lithium-ion cells in a pocket, bag, or toolbox. Use an insulating battery case so terminals cannot contact keys, coins, tools, or other metal objects.