Name: Samsung 40T 21700 4000mAh 35A Battery (40T3)
Brand: Samsung
SKU: INR21700-40T
Price: 5.99 USD
Availability: InStock

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Description
Reviews

Samsung 40T 21700 4000mAh 35A Battery - INR21700-40T (40T3)

NOT FOR USE IN E-CIG OR VAPE

Alternative option: Molicel P42A 21700 Battery

Samsung has really hit some "Grand Slams" just in the past couple of years with Li-Ion cells, this Samsung 40T is just one of those examples. What makes this cell so special is it's ability of having "Maximum Balance" with Very High Capacity and while having Ultra-High Discharging/Drain capabilities without any compromise, this was previously thought to be impossible as you have only so much room in a cell for either Capacity or High Drain, Not both. Samsung has become the leader in the R&D department as of lately, this Samsung 40T is just one shining example of that. Having a legitimate 4,000 mAh in capacity with a 35 Amp True Constant Discharge Rating without involving a temperature limit cutoff and not making the cell over worked, is nothing short of Amazing.

This is the hardest initial hitting cell made that has a legitimate 4,000 mAh or greater in capacity. With this cell you can have a true "Peace of Mind" that your demanding needs and wants will be more than satisfied and met with no problems. This is a truly a Phenomenal cell in the 21700 form factor size.

Specifications:

Manufacturer	Samsung SDI
Model	40T (3)
Size	21700
Positive Terminal	Flat Top
Nominal Capacity	4000mAh
Continuous Discharge Rating (max)	35A
Nominal Voltage	3.6V
Maximum Voltage	4.2V
Discharge cut-off Voltage	2.5V
Protected	No
Rechargeable	Yes
Approx. Dimensions	21.1mm x 70.4mm
Approx. Weight	68.2g
Country of Origin	Republic of Korea
Associated Names	INR21700-40T
Data Specification Sheet	Samsung 40T (3) Datasheet

WARNING:

The user must have appropriate understanding of lithium ion batteries before purchase. Use caution when working with and using lithium ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batteries charging unattended. Buyer is responsible for any damage or injury caused by misuse or mishandling lithium ion batteries and chargers. No express or implied guarantee of compatibility with any device can be made. Charge only with a smart charger designed for this specific type of lithium ion battery. Do not mix and match old and new, used and unused batteries.

DO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
MISUSING OR MISHANDLING LITHIUM ION BATTERIES CAN POSE A SERIOUS RISK OF PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH
BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
ONLY USE WITH PROPER CIRCUITRY IN A PROTECTED BATTERY PACK
ONLY USE WITHIN MANUFACTURER LISTED SPECIFICATIONS
DO NOT STORE LOOSE BATTERY IN A POCKET, PURSE ETC. - ALWAYS USE A PROTECTIVE CASE OR BOX
KEEP AWAY from metal objects to prevent short circuiting
DO NOT short circuit
DO NOT use if wrapper or insulator is damaged or torn
DO NOT use if damaged in any way
DO NOT overcharge or over-discharge
DO NOT modify, disassemble, puncture, cut, crush, or incinerate
DO NOT expose to liquids or high temperatures
DO NOT solder, spot weld only
User must be familiar with handling lithium ion batteries before purchase
Usage of batteries is AT YOUR OWN RISK
ALWAYS charge in or on a fire-proof surface and never leave charging batteries unattended
RESELLERS MUST FORWARD ALL WARNINGS TO ALL CUSTOMERS FOR THEIR REFERENCE AND SAFETY

John M.

Worked great for what I needed. Got here fast. Will be buying more in future

Melvin G.

Even though the 40T3 says not to be used in a vape, they are excellent for that purpose. Deliver longer run time than 18650 batteries. Great product. Fast shipping too. This battery store is top notch.

james G.

the best battery you can buy & quick shipping

Winifred S.

Receive them on time. They work great.

Sharron P.

Super deal on batteries for my vape system. Fast shipping!!

terry l.

Worked great

Amy S.

Works perfectly in my vape and the charge lasts a long time.

Linda B.

Works like a champ. Was using the 18650 prior in my product, because it supported both 18650 & 21700. Looked around and found at this site. (Not the first time purchasing other products here). Anyway, the Samsung 40T 21700 4000mAh 35A Battery (40T3) I purchased is far superior and works better in my unit.

Justin C.

This is a quality vendor. Everything was shipped promptly and came packaged very well (the plastic battery cases and flashlight were a nice extra).

Greg D.

This is THE battery I use in 21700 regulated vape devices. Always great prices and service at 18650BatteryStore.com..

Michael S P.

Great Product! Will Buy Again!

George V.

Excellent service. Quick and priced better than anything in town, not to mention in stock something that is seriously lacking in the town I live in. I will definitely be a returning customer. The free flashlight was a great surprise! Thank you

James M.

Best vape batteries on the planet

Paul M.

Perfect support and top quality batteries and good price from you guys...... and thus i'm NEVER forced to buy batteries from China again !

Matthew J.

100% solid. They're performing at a level that matches the hype ;)

Robert K.

So far they are great batteries. The high discharge was important to me, if it’s not important to you, you may want a higher capacity version.

John S.

Excellent batteries. What more can be said about these batteries that hasn’t been said before. Get’em while you can.

Timothy N.

Great web sight Good selection Fast Delivery Can’t ask for more

Dan C.

The 18650 store has so many more options than Ama...uh other on line retailers. My orders have arrived as promised, their prices are competitively lower. And the free gift they send with the order is not only useful and good quality. They are my new go to for all my rechargeable battery needs.

Gerald P.

Order was shipped quickly and arrived in good condition

Douglas M.

Works great lasts a lot longer than the 18625 we use them in regulated vape mods.

Jacob U.

Exactly what I ordered, shipped in a timely manner.

joseph f.

Batteries work perfect they’re awesome great product great service

kern d.

m, ,

Sidney M.

Great battery , tons of power!

Travis N.

Good batteries

Todd L.

Quality products and fast shipping. And a bonus flashlight. Thank you.

Andrew B.

5/5. The sellers even included a free flashlight that the battery I purchased was compatible with. If I need another battery, I'll be buying it here.

Wilburn R.

Great battery great price, always buy from 18650batterystore for good experiences.

Kenneth S.

Great long-lasting batteries. Fast shipping. Well packaged. Wonderful transaction. Will buy from again.

PAUL B.

I want to thank you for the free gift. The battery was great.

Joseph G.

Batteries showed up quick. The free flashlight is probably worth more than the $22 I spent

Thomas L.

Excellent battery with good longevity and amp rating. Works well in my pulse X although I don't endorse this use unless your 100% proficient in battery chemistry, use and design.

Dennis S.

Great batteries so far. charged them up and late the next day they showed 4.07 volts so very little loss in over 24 hours - miniscule. Will buy more.

Elizabeth H.

Great battery Fast as heck service I really couldn't believe how fast they shipped them to me. 10 stars this company is awesome!!

Markus M.

These batteries are great! I had to repurpose them because they didn’t fit in my Yihi vape, but that’s my fault. I didn’t pay attention to the specs. I was surprised at how quickly they arrived. I would not hesitate to do business with them again. Actually, I will be, to get the correct size. Great company.

Rosa C.

Muy buenas celdas para fabricar baterías. Thank You!!

Richard B.

Great batteries. Fast shipping and the free gift was better than anything i was expecting. I bought these same batteries on another website and they were fake and had dead cells. 18650 battery store came thru for me big time.

Charles D.

Great Battery for Vaping

kevin d.

Great transaction and fast shipping. Batteries work perfectly

Ryan H.

Good price. Arrived early too!

Allen J.

Seems to work pretty good, stats seem to be fairly accurate

Gabriel B.

Fast delivery and extremely accurate order. Also, the free gift was a nice touch!

Brian G.

Very good batteries

Jesse B.

Works great in my vape mod. The 21700 lasts much longer than the 18650.

Jerry Rosalin R.

Rewrapped these Samsung 40T’s from “The 18650Battery Store” once i got them through the mail which was super quick!!

john p.

Works perfectly. Will buy again. Cheaper then any other website out there.

Mike M.

This Samsung 40T battery, lasts me all day in my Smoke Thallo S! Phenomenal!

William H.

The revered Samsung 40T. Consistent, long-lasting power!

arthur t.

Just the best overall battery that's made. I wish I would've bought 10 in this last order. I have 10, for my flashlights, and will stock up more when they're available again.

Thomas R.

Very long lasting batteries for vaping.

Perry W.

Great Cells! Amazing Capacity and outstanding output! Last build was a 10s2p.

jeannette h.

Imo these are the best 21700 available. Long lasting.

Billy T.

I use it in my e-cig . I can get three of these for the price I was paying for one at my vape shop!!!!! Will be buying all my batteries here from now on

Jeffrey S.

Great prices, fast shipping.

James B.

40T’s fire my SQ 217 mod for an entire day! So happy with them in all my vape equipment.

Marcus M.

Great batteries.

Ameen A.

Great website, excellent service, and very fast shipping. Thank you

Noe M.

These batteries last a long time and the amps are more than enough to get the job done I like them I got them because the store was out of 30t my new fav

Michael R.

Value, quality and fast shipping.

Lonnie R.

I can always tell a high quality cell by its weight, these weigh a LOT and therefore they can do a lot. I am very impressed.

Richard A.

These batteries are great for RC flight packs.

Christopher V.

They work great, better than last version so far. Although slightly overpriced for online order. No 4 cell discounts..

carole b.

They all work fine.

David S.

Always buy my batteries here

Dan F.

Great batterys and prices. I've had no problems and timely delivery . Would recommend. Mail ban is complete bs.

Albert F.

Great batteries fast shipping

Aubrey D.

Can’t say enough good things about these cells. Purchased to build my own 10s2p battery pack for my Meepo v3. Over 100 miles post build and no issues whatsoever. I was so pleased with my first set of 20 cells that I purchased and other 20 to build another pack for my brothers board. 10/10 would highly recommend this company and cells.

John S.

The Samsung 40 T is definitely one of the best 21700 batteries on the market and i highly recommend it. I also highly recommend the 18650 battery store because of their excellent pricing and fast shipping.

Spectacular Great. Will do business again and again.

Erik Leal

Thanks to Anthony Everything good just arrive few day ago to me in Venezuela. Thanks you very much

Barbara

Great customer service! Love this site, helped me find the right batteries and got them to me pronto! AND at an awesome price! I won't go anywhere else!

Unknown

Fast service, great product Was having trouble finding the 21700 series batteries in any stores locally where I live, which led me to the Battery Store. I was able to quickly find the product I was looking for, get it ordered and it arrived quickly and on schedule.

Stephen Sinclair

Quality service Good quality product, great customer service, you even get a email to let you know that your package has arrived, Iâ€™ll be using these guys going forward

Rafael Raldiris

Fast and easy 10/10

Jeremy

21700 battery were not packaged correctly Ordered 6/ 21700 batteries..they were put in cases and thrown in a big box without any bubble wrap of any kind..they were banging around during shipping and all the cases were shattered..they don't seem to care about safety or that you spent $ with this company..I will not be buying from them again.

Unknown

Long range batteries for FPV This is one of the best Li-ion batteries available for long range FPV. Light weight, 35 amp constant discharge, even though I mostly am pulling 10-12 amps flying long range I can still punch the power or fly quickly without stressing the batteries.

Don

Great service and selection Fast shipping for my order. They even included small storage boxes for rechargeable batteries.

Unknown

Great experience! Product received as advertised and works great. Fast shipping! A++ Thank you!

Marty

40T is a great cell A huge improvement over the 20700s I was using.

Jack

Awesome batteries These cells last a really long time on a charge. Fantastic batteries.

lacie Morgan

Amazing Got my order on time! Didnâ€™t have any issues and got some great barriers!

Galen Barnes

Quick delivery, great price! The best price I've seen on the batteries I purchased and they got them to me quickly and for a reasonable price.

Jeff Skidmore

Awesome Couldn’t be happier the price was cheap and the charge lasts all day I’m glad I bought them I definitely recommend these batteries!

Greg Maliski

well done I have no complaints, all of your products work well and your prices are great.

Warren

Good Battery Good capacity, excellent continuous amp rating. I only buy Samsung cells anymore for the great price/performance ratio and longevity.

Steven A Hansen

excellent I rely on 18650 for all my battery needs excellent service and fair pricing

Aydin Sesker

Super-fast shipping of exactly what I needed All 500 cells were within millivolts of each other! And they got here within just a few days. Ampacity and capacity were as advertised and I am super happy with my purchase.

Adrien

Excellen battery ! I have very fast received the batteries ! As well I had a small issue which was promptly fixed by support team ! Strongly recommend to buy from this place ! Thanks

Tim

Not 4000mAh These are really good batteries but they are more like 3800mAh of useable capacity. Very low internal resistance means they stay cool when charging fast, my charger can do 3A and they could handle at least another 2A before getting too warm while charging. Overall one of the best 21700 you can get and at a great price.

Richard James

Great product Awesome batteries!!

Matthew Deremer

Fast shipping, great prices I ordered Samsung T40 batteries and got a price far lower than other suppliers. The shipment was fast and I received my items in just a few days. Items were as advertised and packaged nicely. It even included clear plastic carrying cases.

Christopher Goyette

Samsung 40T These along with the 30T are the BEST 21700 batteries on the market. IMHO. Great Capacity and Amperage. The only 2- 21700 I will buy.

Mark Topping

They say what they do and do it. These batteries average 4000mAh and work as expected

Jeff J

Excellent 21700 cell These are one of the best. I'd have to say these rank in my top 3 21700 cells. You can't beat these cells performance and the price this site sells them for.

Courtney P.

Good prices, poor shipping Prices are great, customer service answered questions in a timely manner but their shipping times aren’t good. They claim it’s USPS, but I have no other issues with USPS deliveries for any other places that ship with them

Kristen

Great price great service I ordered 21700 batteries for my vape and they were such a great price. They shipped and got to me within 2 days. Thanks for the great service I’ve already recommended you to several friends.

Unknown

Fast and easy Order was shipped and received quickly. Very happy.

michael bolling

Quick and accurate quick service. Perfect product

John Simmons

Very pleased Fast shipping and exactly what I ordered for the best price I could find.