Safe, Reliable, Trouble-Free Battery Care Developed To Maintain Batteries Not In Constant Use Or In Storage Fully Automatic Charger 1.25 Amp Complete 4-step Charging Program (Initialization, Bulk Charge, Absorption Mode, Float Mod Reverse Polarity Protection To Ensure User Safety. Red & Green Lights Alternately Flash In This Conditon Used With True Gel Cell Batteries 10 Year Warranty The Battery Tender? Plus is a 1.25 amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Included is a quick connect harness for hard to reach areas. This Battery Tender is for True Gel Cell Batteries. 10 Year Factory Warranty