091-89-12 AUTO CHARGE 4000 Kussmaul Electronics Co., Inc.: 40-ampere output, dual-channel automatic battery charger designed for fire apparatus, ambulances, and other emergency vehicles. High-output current for installations with many batteries in parallel. Remote electronic voltage sensing for rapid recharge guards against overcharge and water boiloff. Five-ampere Battery Saver powers rechargeable hand lights, portable radios, and other accessories. (800) 346-0857.