【5-in-1 Battery Trickle Charger】 FirstPower Pro upgraded battery charger, Combines a powerful battery charger, battery maintainer, trickle charger, float charger, battery desulfator, and battery tester. 1) Works with 6V & 12V standard, AGM, lithium (LiFePO4), and deep-cycle batteries 2) Just better. It's 34% smaller and delivers over 65% more power. (Fast charging: Charge 50Ah 12V to 80% in ~10hrs!!) 【9-Step Smart Battery Maintainer】Battery maintainer 12 volt automotive: Fully automated 24/7 charging with anti-overcharge/overheat protection. Features adaptive thermal compensation – its digital sensor adjusts charge based on ambient temperatures (prevents hot overcharge/cold undercharge). Spark-proof & reverse polarity-safe design, perfect for keeping your vehicles fully-charged and maintained all year-round. 【Battery Restoration】12V battery charger: features "REPAIR" mode revives old/idle batteries via high/low-frequency pulse tech, for optimum battery health and extended battery life. Automatically enters trickle/float charging mode after fully charged, keeps winter/holiday storage. Note: Cannot restore fully dead or severely damaged batteries. 【Revive Dead Batteries】Got a dead battery? FirstPower Pro battery chargers with a loading mode can restore batteries as low as 1 volt. The innovative force mode, you have full control to manually initiate charging on batteries that are completely drained down to zero volts, helping you avoid the cost of a new battery. Just 5 minutes in FORCE MODE can reactivate your battery and bring it back to life. 【Wide Battery Compatibility】 Car battery charger — Compatible with all types of gas and diesel vehicles - Charge and maintain cars, automobiles, motorcycles, dirt bikes, scooters, mopeds, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, PWCs, jet skis, snowmobiles, golf carts, classic cars, and more. 【In the Box】You'll received the FirstPower Pro 12V 5A, 6V 2A trickle battery charger - with Brighter Screen Visualized Charging, fused ring terminal and alligator clip accessory cables, 4 × wall mount screws, and a 10-year manufacturer's warranty, and lifetime customer support.