Battery Rechargeable 25R 3.7V 18650 2500mAh Samsung

One of the size classifications of lithium-ion batteries is 18650. This battery can discharge a whopping 2500mAh. The diameter of this battery is 18mm and a length of 65mm. It is almost the same as the AA battery but a little bigger. 

These kinds of batteries are ideal for Power Banks, Solar generators, e-Bike, and Power walls. Using a BMS, you can connect it in series or in parallel to create a bigger voltage or ampere rating.

QUICK SPECS:

• Model: 18650
  
• Voltage: 3.7V
  
• Power Rating: 2500mah