The Vexilar 12v 9Ah High Performance Battery & Charger Set is designed for sportsmen on the go and features a fast recharge time, rugged construction, and portable design that is ideal for summer and winter use. The supplied charger is a fully automatic 1 amp charger/maintainer, so you can expect years of trouble free power when you need it. 12 Volt 9 Amp Battery Capacity Sealed Lead-Acid Design is FAA Approved for flight Fully Automatic 3-Stage Charging 1 Amp 12 Volt DC Charger Output Charger Will NOT Overcharge the Battery When Full, Maintains the Battery Charge Colored LEDs Indicate Charge Mode 100 - 240 Volt AC, 22 Watt Charger Input 50/60 Hz Class 2 Battery Charger UL Approved Quantity per pack: 1