A charging algorithm of lithium ion battery comprises at least one final stage wherein a maximum charging voltage is reached and the charging stops at said voltage. The state of charge or remaining capacity at the end of last discharging is measured and re...

A rechargeable lithium ion button cell battery having a sealed housing comprises an inner casing and an outer casing , both casings have at least one flat area as top or bottom of the battery, and a round or oval sidewall vertically formed to the flat area...