Digital Battery Meter
Measures battery voltage when "+" and "-" probes are touched to battery's corresponding "+" and "-" terminals.
Voltage of a fully charged 12V battery is no lower than 12.6V. A 40% charge will read 12.2V.
While Supplies Last. All sales are final, no returns.
Absolutely recharge the battery if the reading falls below 12.2V.
Batteries MUST remain fully charged in freezing conditions.