... : 85%-90%.3,Cooling need a fan.4,Automatic,Advanced ,high frequency,swich mode design allows more efficient,faster charging.5 ... on-board use and offers space advantages.6,Aluminum alloy case, Plating by copper, Golden color or black color. Also supply ... modify max charging voltage as per customers different kinds of lead-acid battery.10,Operating temperature:0-50 ,Storage temperature:-10 - +60 .Please ...