Charger Features & BenefitsBuilt-in balancer. Batteries are automatically balanced during charging, ensuring full chargeAdvanced individual charging method-charge each cell individuallyAutomatically charging process - makes it easy to useLight weight and attractive aluminum alloy caseSafer and faster charging for better battery performance and lifeFits 1S to 4S Li-PO/Li-Fe battery packs with XH type balance connectorMultiple protection features provide maximum safetyCharge Rate1A (1,000mah per hour)Applicable for Li-ion, LiPo and LiFePO4 battery packs Specifications InputDC 10-16V, 1.0-1.5AOutputDC 4.2V/16.8V (Li-PO)DC 3.6V/ 14.4V (Li-FE)Charging Current1.0ABattery TypeLi-PO/Li-lon/Li-FeDimension86 x 57.3 x 16.8 mmWeight100gReserve Polarity ProtectionYESShort-Circuit ProtectionYESInput Voltage ProtectionYESWarning - Do Not charge the following types of battery:Lead acid battery or VRLANiMH or NiCD battery packNon-rechargeable battery (explosion hazard)Faulty or damaged batteryAny other types except for LiPo/Li-ion/LiFePO4 battery packs Tenergy 12.8V 1200mAh 15C LiFePO4 Nunchuck Battery Pack For Airsoft GunBuilt with 4 Tenergy 3.2V 1200mAh LiFePO4 15C Rechargeable Battery.More capacity per gram, meaning longer duration between charges.Almost no ''self discharge'', so your airsoft is always ready to go even weeks after charging.Faster charge time Specifications Voltage12.8VCapacity1200mahConnectorMini TamiyaDIMENSION103mm(L) x 33mm(W) x 13mm(H) each cellWeight177g / 6.3g Caution This pack is LiFePO4 chemistry. Only charge them on quality chargers which have a dedicated charge routine for LifePO4 cells.NEVER attempt to charge damaged packs.Read all cautions on product packaging before using these packs.