It Is A Battery Charger That Can Easily Charge A 2-Cell Li-Po Battery. By Using A Charging Adapter For Smartphones, Charging Is Done From The XH Balance Connector Of The Battery. The Charging Current Will Vary Depending On The Situation, But If There Is An Input Of 5V3A From The Charging Adapter, It Is Possible To Charge A 7.4V Battery At 2A.