(4) Automatically detects 2-3S Lithium battery pack. GA005 will automatically charge when the voltage of any cell among the LiPo pack is excessively low. At the same time LED displays charging status (flash in red). The voltage of any cell LiPo is controlled at the level of 4.2 ± 0.05V to ensure the maximum voltage difference of single cell in the battery pack is less than 50 mV