Keenso Battery Charger Module, Acid Battery 3A 12V 1-1000AH Accumulator Acid Battery Cell Storage Battery Charger Module(With terminal) Other Electronic Components Electrical & Electronic

【Battery Charger】--The DD30CRTA is a PWM switch-mode battery charger controller for 12V lead-acid battery in a small package using few external ，suitable for 1-1000AH 12V Acid Battery charger. 【Multiple modes】--The DD30CRTA is specially designed for charging 12V acid battery with trickle charge, constant current charge, over-charge and float mode. 【easy to operate】--In over-charge and float mode, the regulation voltage is internally set.The constant current is programmable with a single sense resistor. 【End-of-Over Current】-- When the battery voltage approaches the over-charge voltage, the charger goes into the over mode. In over mode, the current start to decrease and when the current drops to 38% of constant current, the charger goes into float-charge mode. 【Automatic Battery Recharge】-- In float mode, if both the battery and the input power supply (wall adapter) are present, a new cycle will begin if the battery voltage drops below 83.95%xVOC due to self-discharge or external loading. A new cycle can also be started manually by plugging off the input supply and reapplying it.