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Specification: Battery type: 3.7V ternary cell, lithium manganate cell, lithium cobalt cell Applicable voltage: 50V Charge current: 28A Discharge current: 30A Max continuous working current: 28A Overdischarge protection voltage: 2.6V Overcharge protection voltage: 4.25V balance voltage: 4.2V Temperature protection: Discharge 75℃, charge -7℃ Weight: Approx. 51g / 1.8oz Package list: 1 x lithium Battery Protection Board Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.