Minn Kota 1820087 MK-BM-1D Digital Battery Meter , Black
Monitor the voltage level and “state of charge” of any 12-volt battery with an
LED display that indicates full, 2/3, 1/3 or 0 “state of charge". Easy to
store anywhere.
 
Product Features
  

         
LED Screen gives current voltage of the battery being tested
         
State of Charge Indicators display battery status - 0, 1/3, 2/3, Fully Charged
         
Easy To Use: Touch the positive lead to the positive terminal on the battery and the negative lead of the probe to the negative terminal
         
Voltage and state of charge display automatically on contact with battery terminals
         
1 Year Warranty from date of purchase