TI-1795SV Battery Power Calculator

Example Preset Inputs

You can test the calculator using these standard configurations:

• Standard Alkaline Setup: Current Drain = 0.05 mA, Battery Capacity = 50 mAh, Usage = 2 hours/day, Derating = 0.8, Solar Boost = 15%.
• Heavy Continuous Usage: Current Drain = 0.08 mA, Battery Capacity = 45 mAh, Usage = 6 hours/day, Derating = 0.75, Solar Boost = 5%.
• Low Light / Indoor Office: Current Drain = 0.05 mA, Battery Capacity = 50 mAh, Usage = 1 hour/day, Derating = 0.85, Solar Boost = 10%.

Formula Used

The calculation model integrates battery electrochemistry, circuit draw, and environmental offsets using the following core equations:

• Net Current Drain ($I_{net}$): $I_{net} = I_{drain} \times (1 - \frac{\text{Solar Boost}}{100})$
• Effective Capacity ($C_{eff}$): $C_{eff} = C_{battery} \times \text{Derating Factor}$
• Daily Energy Consumption ($E_{daily}$): $E_{daily} = I_{net} \times \text{Operating Hours}$
• Estimated Battery Life (Days): $\text{Life}_{\text{days}} = \frac{C_{eff}}{E_{daily}}$

How to Use This Calculator

1. Enter the specific current drain value associated with your TI-1795SV hardware revision in milliamperes (mA).
2. Input the rated capacity of the button cell battery or backup cell in milliampere-hours (mAh).
3. Specify your average daily operating duration in hours to model accurate load profiles.
4. Adjust the derating factor and dual-power solar boost percentage to reflect environmental lighting conditions.
5. Click the Calculate Battery Life button to review comprehensive longevity metrics instantly.