America's #1 Smart Battery Charger Brand. Still.

Since 1965

The charger that thinks — so your battery never dies.

Battery Tender® smart battery chargers and maintainers keep 6V, 12V, 24V, 36V, and 48V batteries at peak capacity — automatically. ISM (Infinite Sequential Monitoring™) delivers a precise 4-stage charge sequence — Initialization, Bulk Charge, Absorption, and Float — preventing the overcharging and sulfation that permanently destroy batteries.

From motorcycle battery chargers to car battery chargers, marine on-board charging to industrial fleet maintenance — the automatic smart battery charger trusted by OEMs, dealers, collectors, and riders in every season. 60+ years. Still the standard.