Multi-step program saves from 0.5 V, then charges and balances cells within the battery quickly and efficiently. Fully Automatic 9-step 12 V lead-acid battery saving charger, tester and maintainer. Delivers up to 10 A charge current, ideal for V-Twin & UTV size lead-acid (STD/AGM/GEL) batteries; Ampmatic technology lowers charge rate for smaller batteries. Regulates charge voltage to ambient temperature - fully charges battery even when cold, avoids overcharging when hot. CHARGER OPTIMATE7 12V 10A