Optimate TM 320 Battery Charging Unit

Automatically charge, test and maintain 6v or 12v lead acid agm, gel or std batteries from deep start or discharge. Ampmatic charge control adjusts current based on battery size. Small battery gets less, large battery gets more! can save a "dead" battery as little as 0.5v. No risk of overcharging. 100% safe for vehicle electronics. Long battery life maintenance safely. Automatic shutdown in case of short circuit or if battery is disconnected.