As a fully automatic battery maintainer, this smart car battery charger provides 2/10/25 amps for optimal charging, along with additional features such as engine start, auto desulfator, and battery repair. It also includes a winter mode to ensure your AGM, STD, Gel, and deep cycle batteries stay charged and healthy. Features: ?Quick Charger?Up to 25A quick charger, 4-Level adjustable current 2A/10A/25A/AUTO can meet your different needs. This 12V smart car battery charger, with 84% high efficiency (industry average: 75%), ideal for STD, AGM, Gel, Wet, MF, EFB, Deep Cycle batteries. ?Fully-automatic Charging?Auto-identify and charging, auto-stop at 100% charging, auto-start in 30 seconds while you forget to press start, auto-restart to trickle maintain when the battery voltage drops. This battery charger can remember your previous settings, with no worry about AC power failure when connecting for a long time. ?8-Stage Charging Program?Intelligent 8-Stage Charging include: Desulfation, Soft Start, Bulk Charge, Absorption, Analysis, Recondition, Float, and Pulse Maintenance. MCU controller monitor the whole charging progress, add charging precision, optimize battery power, and extend battery life. ?Engine Start Winter Mode?Engine start delivers 100A current helps activating your car battery to start your vehicle in 100 seconds. Winter Mode, +0.2v on the basis of the original charging voltage, better boosts your battery activity and charges more thoroughly in low-temperature situations. ?Battery Repair?Advanced Recondition mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance, help to repair old/idle batteries and extend battery life. If your battery cannot be charged, you can try "Recondition" mode to repair your battery, pls Note: It can not repair a totally dead battery. ?Multi Safety Protection ETL Certification?This battery charger offer multi protection against Spark,Reverse Polarity,Over Charge/Discharge,Over Voltage,Over Current,Overload,Overheat,Current Backflow,Short Circuit. Reliable cooling systems improve working performance. ETL certification makes it safe to use. ?18-Month Warranty?18-month warranty for all TowerTop products. We have strong confidence in our products, hassle-free return or refund for any product quality issue. If you have any questions, please feel free to contact us, we will reply to you in 24 hours and give you a satisfactory solution. Package includes: 1 x Battery Charger 1 x DC Output Cable with Clip Connectors 1 x User Manual Listing and template services provided by inkFrog