- Key chain hearing aid battery tester
- Works by sliding battery against a contact
- LCD read out shows amount of life left in battery
- Storage compartment for 1 extra battery
- Sold by the each
DIGITAL BATTERY TESTER
$10.25
- Key chain hearing aid battery tester
- Works by sliding battery against a contact
- LCD read out shows amount of life left in battery
- Storage compartment for 1 extra battery
- Sold by the each
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