Ni-MH button cell: 1. high capacity, 2.stable discharge, 3.be applicable to wide-range temperature, 4.excellent over-discharge resistance, 5.excellent over-charge resistance, 6.good performance in trickle current charge, 7.good performance in discharge and charge, 8.small volume, 9.leakage protection, 10.no memory effect, 11.environmental fiendly Ni-CD button cell: 1. stable discharge, 2.be applicable to wide-range temperature, 3.excellent over-discharge resistance, 4.good performance in trickle current charge, 5.good performance in discharge and charge, 6.small volume, 7.leakage protection Widely used for electronic appliances, electronic toy,medical equipment, etc.