Health meters
Rossmax TG380 battery
1 × 1.5V silver oxide button cell
How to replace it
| How to open | Open the battery cover. Place a new 1.5V button cell type SR41 or LR41 with positive side facing up and negative side facing down, then close the cover. |
|---|---|
| Orientation | Positive (+) side facing up; negative (−) facing down |
| Access | Tool-free |
| Notes | Medical thermometer — follow Rossmax cleaning / hygiene instructions after service. |
Important
- OEM allows SR41 or LR41 — related size family, not identical chemistry. Prefer the chemistry printed on the installed cell when replacing.
- Medical device: button-cell swallowing hazard — keep cells away from children.
- Confirm the model printed on your unit (TG380) before buying.
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Fluke 101 Digital Multimeter
Accurate open-circuit voltage and basic electrical checks
- Klein Tools MM400 Multimeter
General DC voltage checks including battery terminals
- Digital multimeter
Measure open-circuit voltage and general electronics checks
New battery but still not working?
A fresh 1 × SR41 should restore Rossmax TG380 if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Positive (+) side facing up; negative (−) facing down
- Check the battery type
This device needs 1 × SR41 (silver_oxide). Rechargeable cells are not supported for this device. Same size does not always mean the same battery.
- Check known model-specific issues
OEM allows SR41 or LR41 — related size family, not identical chemistry. Prefer the chemistry printed on the installed cell when replacing. Medical device: button-cell swallowing hazard — keep cells away from children. Confirm the model printed on your unit (TG380) before buying.
- Confirm the battery itself
For most coin cells, fitting a known-good fresh cell of the correct code is simpler than capacity testing.
- Still not responding?
If a correct, fresh battery installed properly does not restore the device, the fault may be elsewhere — the device may need service or replacement.
Replacing the device?
Rossmax TG380 is still sold new. Only consider a replacement if the checks above did not help.
Need to replace the device?
Rossmax TG380 is still sold new. Only buy another if a fresh battery and the checks above did not help.