... ~260Vac Output: 12VDC, 20A Overcharge, battery reverse-connection protection CB sereis battery charger1, PWM technology, High frequency design ... battery is disconnected.6, Smart cooling fan, start up automatically after temperature over 60°C, suitable for ... polarityOutput over currentOutput low voltageOutput cut off when battery disconnectedHeat runCabinet temperature≤60°CBattery surface temperature≤ ...