... Business 1. Product range:For HP, For Dell, For Toshiba, For Lenovo, For IBM, For Fujitsu, For Acer, For Asus, For Samsung,For Apple,For Sony 2. Delivery time: ... to avoid frequent full discharging of the battery. 2.For battery meter calibration, periodically do a full battery discharge, ... Rechargeable your battery undergo self-discharging when left unused for a long time. So it is necessary to recharge ...