TESTING DIFFERENT BATTERY TYPES - It works with standard and rechargeable household batteries.
1.5V-----AAA,HP6,MN2400,RO3,AA,HP7,MN1500,UM3C,HP11,MN1400, UM2,D,HP2,MN1300,UM1 and Cell Button batteries.
REQUIRES NO BATTERY TO OPERATE - Easy-to-read ,the digital display to quickly identify whether a battery needs to be replaced or thrown away.
No batteries required, no more guess work It is activated by the battery being checked.
PERFECT FOR HOME USE - Great small tool can tell you if your battery is good, low, or needs to be replaced.A must buy for anyone who uses regular or rechargeable batteries on a regular basis