Portable and lightweight, designed for 12 volt lead acid batteries ONLY.
6 LED lights indicate Alternator and battery state, check before charge and overload display.
Alternator state - accelerate the engine to 2000 rpm, when the green light is on, the charging status is ready.
Battery check - indicates the percentage charging of the battery.
Charged state - when green light is on, the battery is already fully charged.

Technical Details

Product Details

Package Dimensions
Width : 2.28 inch
Height : 1.5 inch
Length : 5.51 inch

Shipping Weight: 3.2 ounce (View shipping rates and policies)

ASIN : B071Y7DDCX

Product Description

ONLY for 12 Voltage Battery
Connect clamps with battery correctly, turn on engine, accelerate to 2000 rpm. These lights would indicate if alternator works well. If the Fault Light lit up when the alternator voltage is too high, it would hurt your battery.

Turn off Engine
These lights indicate if the battery is already fully charged.

Check Before Charge
This light indicates if the battery could be charged. When the voltage drops to 10V, the battery would be dead and can NOT be re-charged anmore.