Joinsun high-performance 21700 batteries are suitable for Flashlights, Power Tools, Power Banks, Portable Power Stations, Electric Garden Tools, E-Bikes, Electric Scooters, Electric Motorcycles, Hoverboards, and Self-balancing Scooters. Reliable, rechargeable, and long-lasting — perfect for all your power needs. Joinsun is a 21700 battery factory in China.
Before ordering, make sure your device supports the battery type you choose. You can look at the following factors:
High-Drain or Standard Cells: Equipment like flashlights and power tools work better with high-discharge (high CDR) batteries.
Flat Top or Button Top: Button top batteries have a raised positive terminal, while flat top ones are smooth on top.
Protected or Unprotected: Protected batteries come with built-in safety circuits, making them safer for single-cell use. Built-in protection circuit prevents overcharging, over-discharging, and short circuits, but the length is slightly longer than standard 21700 battery.
