Digital Battery Tester for AAA , 1.2~4.8V 9V Portable Digital Battery Tester, Universal High Battery Voltage Tester for 6F22 9V 10440 14500 AAA D
 
Product Features
  

         
Portable battery tester, small cell button cell, compact size and lightweight, easy to carry.
         
Test your battery capacity in seconds, the tool can tell you if your battery is good, low, or needs to be replaced.
         
compatibility, try different kinds of batteries, such as LR44 L736 6F22 9V AAA D C 16340 14500 10440 and other batteries.
         
Easy to read, the digit indicates the power level, fast and accurate, save time.
         
You can simply test the battery voltage to determine if the battery capacity is low or high, which prevents us from wasting good batteries by disposing of good ones.