Powermania M106 1-Bank Turbo Waterproof Marine Battery Charger, 6-Amp Tournament Grade; 6-Amp; One-Bank; 12 VDC; Waterproof Onboard Charger Fully Automatic 3-Stage Smart Charge accepts full range 100 Hz. 240V AC input with remarkably high 83% power efficiency Adaptive Loading Charge Feature allocates more ampere to weaker battery to speed up recharge cycle Battery Type Selector offers three preset profiles for Lead-Acid, AGM, High Power AGM and GEL batteries Warning of DC connection and battery health, Protection of Ignition, Over-Current, Overheat, Over-Voltage, Short Circuit, Reverse Polarity