Motobatt 12v pocket voltmeter and alternator tester is simple and inexpensive voltmeter that shows the open circuit state of charge of a battery in the form of % of charge.
When used with the engine is started it will also indicate charging voltage going at the battery with the ‘bad’ indicator light and passing charge voltage with the “good” indicator light.
Another cool part is that it can be used to remotely test the battery, without actual access to the battery by inserting the probes (in the fixed position) into the battery charge/maintenance lead. If the battery is accessible you can remove the negative lead from its fixed position and test the battery at each terminal location.
12 volt motorcycle, ATVs, tractors, PWC, cars & snowmobiles