The ISOpwr Auxiliary Battery Isolator and charges a 12 Volt auxiliary battery to run mobile radio and other 12 Volt portable•I equipment. Ideal for mobile radio command stations for ARES, RACES, FEMA, and for a VHF/UHF Contest Rovers, moderately powered ham equipment, a recharging station for electric model airplanes, boats, and cars, and for RV's and campers. ISOpwr turns ON when the car is running and the alternator is maintaining the car battery over 13.5 volts. ISOpwr turns OFF when the alternator is off and the car's battery has fallen below 12.7 volts. All-solid-state. FET switch. No relays. Handles up to 40 amperes. Input fuse 40 A. Works safely with all types of 12-volt lead-acid batteries, Flooded Lead Acid, Gelled & AGM. May be used without a battery to automatically turn a radio on whenever the car is running. The radio will turn off with a small delay after the car is stopped. Dimensions: 4" x 5" x 1.5", Owner's Manual

Battery Fuse & Terminal Kit,

(1) ATC Water Resistant In-Line Fuse Holder,
(1) 40A ATC Fuse,
(1) 3/8" Ring Terminal (Positive) for 10-12 AWG Wire,
(1) 5/16" Ring Terminal (Negative) for 10-12 AWG Wire.