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Samsung 40T INR 21700 4000mAh 3.7V Unprotected High-Drain 35A Lithium Ion (Li-ion) Flat Top Battery
Brand:Samsung
MPN:40T
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- 35A continuous discharge powers high-drain devices
- 4,000mAh capacity delivers extended runtime
- Rechargeable 250+ times, 3-year shelf life
- Flat top terminals ideal for custom battery packs
- Size: 21700
- Voltage: 3.6/3.7
- Rechargeable: Yes
- Chemistry: Li-Ion
- Capacity (mAh): 4000
- Terminal Type: Flat Top
$6.55
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Description
Samsung 40T
High 35A Continuous Discharge Rate
The Samsung 40T is a 21700 battery that offers both a 35A max continuous discharge rate, and a large 4,000mAh capacity for extensive runtimes. That discharge rate can be further pushed to 45A for short-term (pulse) power.
As this is an unprotected cell with flat top terminals, the 40T is ideal in battery packs made for use in high-drain electronics.
Rechargeable & Reusable
Invest in a rechargeable battery that will last for years to come– this battery can be recharged 250+ times.High Discharge Rate
35A max continuous discharge rate for high-drain electronics, great for making battery packs for devices that require minimum discharge rates.3 Year Shelf Life
Stock up and store spare batteries with confidence– lithium ion batteries have a 3+ year shelf life, ensuring you always have a fresh replacement when you need it.Notable Features
» 4,000mAh capacity provides long runtimes for all your devices
» Flat top terminal is perfect for use in making OEM battery packs
Please note that these batteries have flat top terminals, and may not be compatible with some devices.
Check with your device's user manual whether your device requires button top or flat top terminals.
CAUTION: Unprotected Li-Ion Battery
Unless equipped and 'protected' with a PCB (protection circuit module) and/or similar device, lithium-ion (li-ion) rechargeable battery cells are not recommended by BatteryJunction.com or our parent and associated companies, or the respective manufacturers, as a stand-alone product. Misuse of lithium-ion rechargeable battery cells can pose a serious risk of personal injury or property damage.
Use caution when working with li-ion cells, as they are very sensitive to charging characteristics and may explode or burn if mishandled. Make sure the user has appropriate understanding of li-ion rechargeable batteries in charging, discharging, and assembly before use. Always charge in/on a fire-proof surface. Never leave charging batteries unattended. We are not responsible for damage if there is any modification of the batteries/chargers in any shape or form (including but not limited to pack making). We are not responsible for any damage caused by misuse or mishandling of li-ion batteries and chargers.
No express or implied guarantee of compatibility with any device can be made. Please do your research and make sure this battery is compatible with the item you intend to use it with.
Charge only in a smart charger designed for the specific type of lithium-ion batteries. Do not mix and match old and new, used and unused batteries.
Do not dispose in a fire. Regulations and laws pertaining to the recycling and disposal of lithium-ion batteries vary from country to country, as well as by state and local governments. Please consult your local jurisdiction regarding appropriate disposal. Many retail stores offer free recycling of rechargeable batteries.
No express or implied guarantee of compatibility with any device can be made. Please do your research and make sure this battery is compatible with the item you intend to use it with.
Charge only in a smart charger designed for the specific type of lithium-ion batteries. Do not mix and match old and new, used and unused batteries.
Do not dispose in a fire. Regulations and laws pertaining to the recycling and disposal of lithium-ion batteries vary from country to country, as well as by state and local governments. Please consult your local jurisdiction regarding appropriate disposal. Many retail stores offer free recycling of rechargeable batteries.
Item Details
| Brand | Samsung |
| SKU | SAMSUNG-40T |
| Size | 21700 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 4000 |
| Chemistry | Li-Ion |
| Sub-Chemistry | LiNiMnCoO2 INR / NMC |
| Shelf Life | 3 Years |
| Packaging | Contractor Pack |
| QTY Per Package | 1 |
| California Residents | see Prop 65 WARNINGS |
Specifications
| Size | 21700 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 4000 |
| Terminal Type | Flat Top |
| Integrated Charge Port | No |
Unit Dimensions
| Length | 2.768 in (70 mm) |
| Diameter | 0.835 in (21 mm) |
| Weight | 2.469 oz (70 g) |
Packaging/Shipping Dimensions
| Length | 2.77 in |
| Width | 0.84 in |
| Height | 0.84 in |
| Shipping Weight | 0.154 lb |
Documents
Additional Details
| Packaging | Contractor Pack |
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
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Reviews
Overall rating: 5.0 / 5 from 17 reviews.
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Review highlights
Reviews
High performance flashlights friend
"There is good reason for this battery being suggested as a 'go to' for high power flashlights. It flat out preforms well. As a new purchase time will tell for the long run but even that has a solid record"
Quality product and a fair price. Good customer service and fast shipping.
"Quality product and a fair price. Good customer service and fast shipping. I wiil buy again and recommend BATTERY JUNCTION. COM. Thank you."
Zebralight SC700d
"The correct battery for this light. Get them when they are cheap, they seem to fluctuate a lot."
Great Product & Fast Shipping
"Received this items faster than expected. Also, in being transparent, I ordered these by mistake. I had meant to order the 18650's but messed up my search and ordered these instead. 100% my error. And I am glad I did, these will actually fit my need better than the lower capacity 18650's. I have actually placed an order for the original 18650 so that I can build the original battery for use in another application."
Samsung 40T INR 21700 4000mAh 3. 7V Unprotected High-Drain 35A Lithium Ion (Li-ion) Flat Top Battery
"Batteries performed as expected and very fast shipping"
good buy
"seem to be pretty good batteries and very good price."
Great Battery.
"The Samsung 21700 40T is a legend among flashaholics. And now that I finally got a few of them to run in my torches, I am sold on them. Can't believe the boost in brightness my lights have when using the 40T. The overall run times are good, too. Buying them through Battery Junction, I knew I was getting legitimate 40T's, and good customer service."
Great battery, Great price!
"Shipping was fast, Works great. Will do business again with Battery Junction."
Great battery
"Excellent batteries with a reputation for reliability and high power draw. Fast shipping at a great price."
Q&A
- Is this battery used for vape mods?
- We think that this is a question best answered by the manufacturer of your mod.
