... ,the size is 40%-50% smaller than Ni-Cd battery and 20%-30% smaller than Ni-Mh battery.2.High VoltageLi-ion ... .5.Long Cycle LifeLi-ion battery has a life of more than 500 cycles.Especially,the lithium iron phasphate battery exceeds 2000 cycles ... , Best can up to 2000 cycle life, some 8 times more than Lead Acid.5.Environmentally Friendly Non-toxic, non-contaminating, No ...