【Compact & Easy to Use】Discard redundant operations, just connecting step by step, RoyPow 12V trickle charger will power your battery. And the smart indicator will light green if the microprocessor-controlled program detects the charging is complete..【Safety Charging】Compact but adopting 8 charging protections, Built-in short circuit protection, overload protection, over-current protection, over-voltage protection, over-temperature protection, and reverse Connection protection. Protect the battery from damage while charging..【Highly Compatible】This battery maintainer can be applied to all types of 12V lithium batteries, also including 12V lead-acid, flooded, AGM, gel cell and deep cycle batteries. It's the best smart charger for automotive, motorcycle, marine, RV, Powersport, lawn&garden, children's toys, etc..【Charge Dead Battery】This 12-volt battery charger is with open circuit voltage, which can activate the battery that is over-discharging and drops down to 1 volt. The auto-repair function can wake up the sleep battery, bringing it back and extending battery life..【Lightweight and Well Package】Only weights 150g, easy to carry. You will get a battery charger, M6 Terminals, battery clamps and user manual. We have a professional customer service team, providing a strongly 2-year warranty, 30-day money-back and free lifelong technical support.