BT189 LCD Battery Voltage Tester
Check a compatible household battery before deciding whether to keep using it. The BT189 displays a battery voltage reading on an LCD. It is for users testing supported cell formats rather than measuring full battery capacity.
- ✅ Read a battery's voltage — The LCD gives a digital result.
- ✅ Check several household formats — AA, AAA, button-cell and nine-volt types are named.
- ✅ Use it without a separate supply — The tester draws power from the battery under test.
- ✅ Keep a small tester handy — The compact ABS body is easy to store with spare cells.
A voltage check rather than a capacity measurement
Place a supported battery at the correct contacts and read the display according to the instructions. A voltage reading is a quick reference; it does not measure remaining energy or guarantee performance under the intended load.
The approximate body size is 92.2 × 61.4 × 13.5mm and weight 31.3g. Confirm the supported chemistry and voltage before testing; the mention of a cell size does not establish suitability for every rechargeable cell in that size.
Technical details
- Model: BT189
- Product: LCD battery voltage tester
- Named formats: AA, AAA, button cells and 9V batteries
- Power: Battery under test; no separate supply
- Material: ABS
- Approximate size: 92.2 × 61.4 × 13.5mm
- Approximate weight: 31.3g
- Package: 1 tester
- Batteries: Not included
Keep a voltage tester with your spare cells for a quick, format-appropriate battery check.
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