Characteristic Type of electrochemical system Pb-H Ni-Fe Ni-Cd Ni-Mh Li-ion Store energy, watt-hour /kg 25-50 25-40 40-80 60-120 100-175 Cell voltage, V 2 1.35 1.25 1.25 3.6 Discharge rate, А 0.2C >0.2C >0.2C 0.5-1C <1C Fast charge capacity, hour 8-16 2-4 1-1.5 2-4 3-4 Cycling, cycle 200-500 1000-1500 1000-1500 300-500 500-1000 Self-discharge, % in month 5 40 2-20 30 2-10 One cycle value, $ 0.1 0.03-0.1 0.04-0.1 0.14 0.1-0.2 Working temperature range, С -20+60 -20+50 -40+60 -20+50 -20+60 Value of charge /discharge cycle, $ 0.10 0.03 0.04 0.12 0.14