Works with 12-volt lead-acid batteries found in cars, trucks, motorcycles, scooters, boats, snowmobiles, ATVs, RVs, personal watercraft and more
Detects bad connections, faulty charging system components, low electrolyte, poor cranking performance, low charge & many other symptoms of poor battery health

LED blinks green, yellow or red, showing battery health at a glance
Extra-loud (100dB) alert with reminder "chirp" warns before it's too late
Advanced software analyzes battery health around the clock
Automatically adjusts for temperature from -40 to 150 degrees F

Installs in under 5 minutes!
Securely mounts on (or near) your battery
12" 18-gauge color-coded automotive-grade connecting cable
Small and lightweight: 1-1/2" x 1-1/8" x 3/4". Weighs only 1.5 oz.

Battery Marvel is not suitable for use in hybrid or all-electric vehicles