A nickel metal hydride battery (NiMH or Ni–MH) is a type of rechargeable battery.Two popular Power tool batteries are Nimh and Li-Ion batteries. NiMH batteries are now employed in Commercial hybrid electric cars. 12V Lithium-ion battery is widely used in UPS, Solar Power Storage Surveillance or Alarm Systems. For details go to: https://www.jieyobattery.com/