3 string (for 3 18650 batteries or polymer lithium battery series combination), 10.8V (rated voltage for polymer battery) 11.1V (18650 or 3.7V lithium battery rated voltage), 12.6V (lithium battery is fully charged after the voltage) Discharge 10A (refer to the upper limit discharge current limit) Never mix a good battery with a bad one!The closer the capacity/internal resistance of the three batteries, the better! (2 good battery a poor battery use effect = 3 poor battery use effect) Short circuit protection, Overcharge protection.
