BAK 18650, 20 Amp, 2500mAh, Flat/Button Top

Certain devices and torches require a button top. If your torch is for mounting on a rifle, a button top must be used. This is to stop the recoil forcing the spring back and denting the top of the positive terminal, there's a pressure vent behind it that you really don't want to block off.
 
Equivalent to the Samsung 25R
 
 
Price is per battery

Specs:

- Model: N18650CNP
- Brand: BAK
- Typical capacity: 2500mAh
- Minimum capacity: 2400mAh
- Nominal voltage: 3.7 V
- Charging voltage: 4.20
- Discharging end voltage: 2.5V
- Continuous discharging current: 20A (30A with a 75°C and 3.0V cutoff)
- Size: 18.35mm x 64.85mm (approx)
- Weight: 47g
 
Buyers must be aware of lithium safety before purchase. Please read my thorough battery safety guide - here