Features: Multi safety protections - battery rescue and recover Made of high quality material, multi-protects of Short Circuit/ OV/ OC/ Overload/ Polarity , featured with Constant Pulse Current Maintenance function to avoid overcharge and discharge Full-loaded and burn-in test prove its high reliable efficiency, stable performance and longer service life, Overheat protect, Abnormal charging protection, protection make your charging process safety. Multi-purposes ,deep cycle battery charger: This battery maintainer charger is a great choice for lawn mower, boat, car, motorcycle, electric vehicle, electric tools and emergency battery charging, lightweight allows you take it to anywhere, used as Trickle Battery Charger as well.