ANCEL BST100 12 Volt Digital Car Battery Tester Vehicle Alternator Condition and Charging System Analyzer - Black ANCEL
- 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.