Ampace JP40 21700 4000mAh 70A Tabless Battery
【Ampace】 Ampace JP40 21700 4000mAh 70A Tabless Battery Customer Favorite Find 21700 Batteries。
Pairs Well With
30-Day Price Guarantee
30-Day Price Guarantee
- Free 30-Day Returns
- Ships from our US warehouse (delivered in 3–7 days)
- Found a lower price? Let us know and we will match it!
1-Year + 180-Day Warranty
1-Year + 180-Day Warranty
So that you can buy with confidence, we provide a comprehensive warranty on every product.
- Warranty Period: This product comes with a 12-month standard warranty.
- Extended Warranty: Buy from our official website and you can register directly for the extended warranty, adding a further 180 days of coverage.
For more details, see the [Warranty Policy].
After your purchase, be sure to complete [Product Registration] to activate your warranty.
Free shipping
Free shipping
- Free Shipping:
All orders ship free of charge and usually arrive within 7 days. - 30-Day Return Guarantee:
If you are not satisfied, you may return or exchange the item within 30 days of delivery. - Shipping Protection (recommended):
For extra peace of mind, we recommend adding Seel Shipping Protection at checkout. With this coverage you can file a claim directly for shipping delays, loss or damage, and receive faster handling and stronger protection.
Please note that if shipping protection is not added, compensation is handled according to the carrier's rules and the applicable conditions. We are always happy to help with logistics inquiries, but the scope of compensation follows the carrier's policy.
For full details, please see the [Shipping Policy] and [Return Policy] pages.
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Features
Features
Specifications
Specifications
| Product Specifications | Value |
|---|---|
| Ampace JP40 21700 4000mAh 70A Tabless Battery | |
| Model Number | 10310701580598 |
| Age Range | 5+ |
| Shipping | Free shipping |
| Delivery Time | 1–5 days |
Reviews (307)
Reviews (307)
Customer Reviews
Payment & Security
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Ampace JP40 – Built Tough for High-Drain DIY Projects
If you’re building a powerful e-bike, tool pack, or custom energy rig, the Ampace JP40 is your go-to cell. With a massive 70A pulse discharge and fast charge support, it’s built to handle extreme output without compromising longevity.
- 4000mAh Capacity: Plenty of runtime in a single 21700 cell
- Up to 70A Peak: Delivers huge power bursts when needed
- 4A Standard Charge / 8A Fast: Recharge faster, build smarter
- 600+ Cycle Durability: Excellent performance retention over time
- Ready for Cold or Heat: Works from -30°C to 75°C
SPECIFICATIONS
| Manufacturer: | Ampace |
| Model: | JP40 |
| Size: | 21700 |
| Positive Terminal: | Flat Top |
| Nominal Capacity: | 4000mAh |
| Continuous Discharge Rating (max): | 60A (No Temperature Cut-off) / 70A (With Temperature Cut-off) |
| Nominal Voltage: | 3.7V |
| Maximum Voltage: | 4.2V |
| Discharge cut-off Voltage: | 2.5V |
| Protected: | NO, UNPROTECTED. |
| Pulse Discharge (5s): | 140A |
| Standard Charge Current: | 4A |
| Fast Charge Current: | 8A |
| Cycle Life: | ≥2400mAh after 600 cycles @ 30A / ≥2400mAh after 400 cycles @ 40A |
| Operating Temperature: | -30°C to 75°C (Discharge) / 0°C to 60°C (Charge) |
| Rechargeable: | Yes |
| Approx. Dimensions: | 21.1mm x 70.1mm |
| Approx. Weight: | 68g |
| Country of Origin: | China |
| Data Specification Sheet: | Ampace JP40 21700 Li-ion Battery Datasheet |
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