4-stage charging process -Desulfurization: The battery enters this stage through a larger voltage pulse (LED: 1 ON, 2-4 OFF). -Batch charging: Use the highest rated current of the battery type used until it reaches 80% capacity. (LED: 1-4 flashes in sequence). -Absorption: The output voltage is limited to the battery voltage, and then the current drops as the battery is charged to its full capacity without overheating (LED: 1-3 ON, 4 flashing). -Floating charge: Fully charge and maintain battery power through pulse charge (LED: 1-4 on). Charge diagnosis Before charging, the 24V battery charger will automatically analyze and diagnose your battery, while accurately charging and maintaining it. Battery Recovery Automatic detection of battery sulfation and acid stratification to restore lost battery performance to enhance engine starting ability and extend battery life. Battery Maintenance Charge and maintain the battery daily, and charge the backup battery. Keep the battery in optimal condition. Intelligent silent fan hot fan 4 speeds are automatically adjusted according to power load and temperature, effectively reducing noise and heat dissipation Safety protections Short circuit protection Overvoltage protection Overcurrent protection Overload protection Polarity reversal protection fast charging The 5 amp battery charger can fully charge you in the shortest time. Save your precious time. 12V 2A/4A/8A battery charger Maintainer And Desulfator Temperature Compensation 5 Amp 12V Battery Charger, 7-Level Automatic Intelligent Trickle Charger 12V 5A Smart Battery Charger,Automatic Portable Fast Charging Trickle Maintainer 6V/12V Battery Charger and Maintainer,1.5A Automatic Intelligent Trickle Charger This product 6V 12V 24V Automotive Battery Tester Buying Options Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.3 out of 5 stars 33 4.4 out of 5 stars 38 4.4 out of 5 stars 66 4.4 out of 5 stars 107 — 4.3 out of 5 stars 194 Battery Voltage 12V 12V 12V 6/12V 24V no data Charging Current 2A/4A/8A 5A 5A 1.5A 5A no data Charging Battery Capacity 6Ah-160Ah 7Ah-120Ah 10Ah-120Ah 5Ah-40Ah 7Ah-120Ah no data Maintaining Battery Capacity 6Ah-200Ah 7Ah-150Ah 10Ah-150Ah 5Ah-60Ah 7Ah-150Ah no data Output Power 150W 100W 100W 20W 150W no data 6V Lead Acid Batteries ✘ ✘ ✘ ✓ ✘ no data 12V Lead Acid Batteries ✓ ✓ ✓ ✓ ✘ no data 24V Lead Acid Batteries ✘ ✘ ✘ ✘ ✓ no data Lithium & LiFePO4 Batteries ✘ ✘ ✘ ✘ ✘ no data