Tech · Utility calculator
Battery Drain Estimator
Estimates smartphone battery health, current capacity, and remaining useful life from age, original capacity, and usage intensity.
Instant result
Plain-English why
Copyable takeaway
What this means
Current capacity: 2000 mAh. Months to 80% health: 0.
Formula used
Degradation rate by intensity. Current capacity = original * (1 - rate*age), floored at 40% of original.
Worked example
4000mAh, 2.5 years heavy 20%/yr => health 50%, capacity 2000mAh, replace soon.
Common questions
Can I use this internationally?
Yes. Currency selectors are display-only unless a tool explicitly says otherwise; no currency conversion is performed.
How exact is the result?
It follows the published Technofatty formula for this tool, but real life can add fees, rules, timing quirks, and context.
Plain-English summary
Estimated battery health: 50%. Verdict: Replace soon.
This section translates the result into a short, direct takeaway rather than leaving the page at a bare number.
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