The popular Battery Tender is now offered internationally! The world's most advanced battery charger switches automatically from charge to long term storage. The #1 Selling Charger in the U.S. Powersports Industry! Widely marketed throughout the U.S. by leading Sports Vehicle Manufacturer's and Distributors. International Input Model (Worldwide Usage). Voltage Range 100-240 VAC 50/60 Hz. 12 volts @ 1.25 amps.