High quality 7.4 V Li-Ion rechargeable battery pack
Made of 2*2200mAh cylindrical 18650 cells with PCB and polyswitch for full protection
Light weight and higher energy density than any rechargeable battery
No memory effect and rechargeable
Longer storage life than NiMH battery
You can build 7.4V/4.0Ah Li-Ion battery pack by connecting two or three PCB ready battery module in parallel
Built-in IC chip will prevent battery pack from over charge and over discharge and prolongs battery life
Perfect for building 7.2V battery pack for bike lighting, RC toy (cars and airplanes), robots, cameras, DVD external battery.