Texas Instruments · Calculators
Texas Instruments TI-65 Technical Analyst battery
2 × 1.5V alkaline button cell
Printed IDs: TI-65 Technical Analyst
- Based on
- Texas Instruments documentation
- Last checked
- 7 October 2026
- Size
- 11.6 × 5.4 mm
- Voltage
- 1.5 V
- Rechargeable
- Not supported
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How to replace it
| Notes | Follow TI guidebook / support article for your model. |
|---|
Sources
Last checked 7 October 2026
Need a LR44?
Texas Instruments TI-65 Technical Analyst uses 2 × LR44.
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Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
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Fluke 101 Digital MultimeterAccurate open-circuit voltage and basic electrical checks
Klein Tools MM400 MultimeterGeneral DC voltage checks including battery terminals
Digital multimeterMeasure open-circuit voltage and general electronics checks
Voltage alone does not establish usable capacity, especially for rechargeables.
Buy links are optional and separate from the battery answer.