Samsung 40T // 21700 4000mAh 30A
- Brand: Samsung
- Model: 40T
- Size: 21700
- Nominal Capacity: 4000mAh
- Nominal Voltage: 3.6V
- Maximum Voltage: 4.2V
- Discharge Current: 30A Maximum Continuous
- Style: Flat Top
- Protected: NO, UNPROTECTED
- Approximate Dimensions: 21.1mm x 70.4mm
- Approximate Weight: 66.8g
These are high capacity and high discharge current batteries. If mishandled/mistreated they can cause serious injury. Use at your own risk.
Always store batteries in a battery case.
Never expose batteries to heat.
Do not use if plastic wrap has any signs of damage.
We recommend always using an external charger.
Only ever use in conjunction with similarly aged batteries of the same model.
Battery safety and care is extremely important. For more information, please refer to our battery safety guideline here