Battery Tender Plus- 12 Volt Corvette

*12 V @ 1.25A
*4-step fully automatic charging (qualification, bulk, absorption, float)
*Charges/maintains sealed, maintenance-free, AGM or flooded lead acid batteries.
*Spark proof even when output leads touch.
*Reverse Polarity Protection - no charger damage / no battery damage
*Temperature compensation-Optimal charge voltage in extreme weather
*72-hour safety timer protects marginal batteries from further damage.
*State of charge indicator- 2 - LED
*7 Foot out put cord
*10-Year Warranty
"A battery tender is a battery charger that is designed to maintain the charge in your battery when the car is stored for an extended period of time. However, it will charge a "dead", but still usable battery if it is used for an extended period of time (12-36 hours)."