Ensure your battery is roaring to go when you are with this easy and worry-free smart charger. Supports all lead-acid battery types – WET, MF, Ca, AGM, Gel & more! 5 Stage fully automatic charging 1.0A microcompresser charger ideal for 6V-12V vehicles Capacity between 4.0Ah – 120Ah Reverse polarity protected, short circuit proof, overheating, overloading and overcharging safe Dust and splash-proof (IP65) – suitable for outdoor use Fully automatic with heaps of safety features including overcharge and overload protection, and an IP65 water and dust resistant rating, this all-lead-acid-type Certa Smart Battery Charger is the ideal choice for your next fishing trip or outback caravan expedition. 5 Stage auto-charging With five fully-automatic charging steps, you can set and forget without worry about leaving the charger on the battery for too long. 1. Soft start – measures the battery condition 2. Bulk – delivers maximum current until the internal voltage has reached the set level 3. Absorption – completes the charging up to nearly 100%, then reduces voltage as the battery nears capacity 4. Float – periodic charging to maintain 100% charge 5. Pulse – battery receives a pulse and starts a new charge cycle once the voltage drops to the set limit