7.4v li-ion 1600mah battery wthin PCM proction De:36*65mm MSDS,CE,ULapprovel ICR 18650 7.4v li-ion 1600mah battery Features:1, Longer storage life than Ni-MH Batteries2, Light weight and higher energy density than any rechargeable battery3, Installed IC chip will prevent the battery pack from over charge and over discharge.It helps protect battery chemistry integrity and prolongs battery life.4, ...