How long does the battery need to be fully charged?A is the nominal capacity of your battery capacity is larger, the required charging time longer;2 it is to see you at the same time a few batteries, two and four sections of the charging time is different, twice as fast than four filling two sections;'3 it is to see your charger can output the current size, large current quickly, small current is slow; Four is to look at your battery to have rest, if no electricity, charging time is longer, if there is excess capacity, charging time is shorterCharging of Ni-Mh batteries have a formula: the battery capacity (mAh) present charging current (ma) & TImes; The time needed for 1.