What are the advantages of ZAPAK Li-Ion Battery?
Aug ,2010

a) No memory effect, re-chargeable at any time. 
b) Higher energy density results in smaller battery size and lighter weight.
c) Very low self-discharge rate at only 3%-10% per month ( Ni-MH battery is about 25%)
d) Much longer service hours and increases numbers of strapping cycles greatly.
e) Wider operation temperature range from -10°C up to 50°C .