HOT DD30CRTA Car, Lead Acid Battery, Charger 12V Charging, Device 3A Current 1-, 10000AH UPS Solar, Power Module, （With Terminal）

This is HOT DD30CRTA Lead Acid Battery Charger 12V Charging Device 3A. The DD30CRTA is a PWM switch-mode battery charger controller for a 12V lead-acid battery in a small package using a few external components. The DD30CRTA is specially designed for charging 12V lead-acid battery with trickle charge, constant current charge, over-charge and float charge mode. In over-charge and float charge mode, the regulation voltage is internally set. The constant charge current is programmable with a single sense resistor.  Deeply discharged batteries are automatically trickle charged at 17.5% of the programmed constant charge current until the cell voltage exceeds 75% of the regulation voltage in over-charge mode. The over-charge is terminated once the charging current drops to 38% of the constant charge current, then DD30CRTA will enter float charge mode. A new charge cycle automatically restarts if the battery voltage falls below 83.95% of the over-charge voltage in float-charge mode. DD30CRTA will automatically enter sleep mode when the input voltage is lower than the battery voltage. Other features include under-voltage lockout and indication, etc. 1: The Regulation Voltage in Over Voltage Mode and Float Charge Mode The regulation voltage VOC at BAT pin in overcharge mode is set at 14.8V(Typical) with ±1.5% accuracy. In float charge mode, the regulation voltage VFLOAT at BAT pin is 91.57% of that in overcharge mode, which is 13.55V(Typical). Trickle Charge Mode At the beginning of a charge cycle, if the battery voltage is below 75%×VOC, the charger goes into trickle charge mode with the charge current set at about 17.5% of the constant current. 2: End-of-Over Charge Current When the battery voltage approaches the over-charge voltage, the charger goes into the overcharge mode. In overcharge mode, the charge current start to decrease and when the charge current drops to 38% of constant charge current, the charger goes into float-charge mode. 3: Float Charge Mode After the overvoltage charge is terminated, the charger goes into float charge mode. In float charge mode, the battery voltage is regulated to 91.57%×VOC, namely 13.55V(Typical). Float charge mode can compensate for the loss of battery power due to self-discharge or external loading. 4: Automatic Battery Recharge In float mode, if both the battery and the input power supply (wall adapter) are present, a new charge cycle will begin if the battery voltage drops below 83.95%×VOC due to self-discharge or external loading. A new charge cycle can also be started manually by plugging off the input supply and reapplying it. Application Car battery charging Solar battery charging Loudspeaker Lead-Acid Battery Charger Electric Bicycle Charger UPS Portable Industrial and Medical Equipment Standalone Battery Chargers Features Fixed Over-Charge Voltage Overcurrent protection Automatic Conditioning of Deeply Discharged Batteries Automatic Recharge Charger Indication Battery Overvoltage Protection Suitable for 1-10000AH 12V Lead-Acid Battery charger