Yuasa (YUA1201000 1 Amp Automatic Battery Charger and Maintainer Easy to use, simply attach to battery and plug in, the 3-color LED displays status at a glance Charges and maintains your battery with a 3 stage charge cycle reaching a 14.4 volt peak, then automatically switches to maintenance mode Designed to prevent overcharging Includes quick connect adapter and alligator clips Utilizes desulfating characteristics to help bring long dead batteries back to life, not for use with lithium batteries