12V 24V Car Battery Charger Lead-acid AGM GEL-- Lithium Battery Repair Maintainer Feature: Microprocessor control (CPU). 7-stage automatic charging: This is a fully automatic battery charger with 7 charging stages. Automatic charging prevents the battery from overcharging. Therefore, you can connect the charger to the battery indefinitely. Level 7 charger is suitable for most battery types, including calcium, gel and AGM, wet batteries. They can also help recover depleted and sulfated batteries. Battery type: most lead-acid battery types, including calcium, GEL and AGM, wet, EFB, etc.also suit for 12v 24v LiFePO4 Lithium Battery,Ternary lithium battery. Button explanation LITHIUM: only for Ternary lithium battery(can not charge the lithium battery without protection board 12.6V 6A Max LEAD:for 12V or 24V Lead-acid battery Including calcium, GEL and AGM, wet, EFB 6A@12V,3A@24V Max LifePO4: for 12V or 24V LifePO4 lithium battery,also for 12V or 24V motorcycle lead-acid battery.1.5A Max 14.6V for LifePO4 REPAIR: for Lead-acid battery repair Switch mode technology: yes Polarity protection: yes Output short circuit protection: yes Non-battery link protection: yes Overvoltage protection: yes Overheat protection: Yes Cooling fan * Input voltage: 100-240V AC, 50-60Hz Rated output: 12V 6A 24V 3A or 1.5A Minimum starting voltage: 8.0V Battery range: 6-120Ah Thermal protection: 65'C +/- 5'C Efficiency: application. 85%. Meet the standards: CB, CE, IEC60335, EN61000, EN55014 Dimensions (LxWxH): 160x100x55mm Package: 1* battery charger 1* user manual