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Electric Scooter/Bike Battery SoH Calculator

Estimate state of health for a electric scooter/bike battery from age, cycling pattern and depth of discharge.

How healthy is your electric scooter/bike battery? Scooter packs live a hard life โ€” vibration, monsoon heat, kerbside fast charging. Indian OEM warranties cluster at 3 years/30,000 km, far shorter than car-EV cover. This estimator combines cycle wear (equivalent full cycles vs the chemistry's rated life at your depth of discharge) with calendar aging to give e-2W riders a screening SoH figure โ€” confirm with a measured capacity test.

87.0%
Estimated state of health
Equivalent full cycles so far613
Cycle life at this DoD2,190 cycles (to 80%)
Calendar fade2.0%/yr
Est. remaining EFC to 80%526
Est. years to 80% SoH1.6 yr

SoH = 100% โˆ’ cycle fade (20% ร— EFC รท rated cycles) โˆ’ calendar fade (2.0%/yr for NMC (Li-ion)). Screening model โ€” a measured capacity test (see the capacity-test tool) always beats an estimate.

Sources: NREL battery lifetime models (cycle + calendar superposition); Manufacturer datasheet cycle ratings, 25ยฐC, by chemistry

Engineering estimate from published standards and typical equipment data. Site conditions, equipment datasheets and measured data govern the real result โ€” confirm with a qualified engineer.

Use the free Electric Scooter/Bike Battery SoH Calculator online โ€” Estimate state of health for a electric scooter/bike battery from age, cycling pattern and depth of discharge. Runs instantly in your browser: no signup, no upload, mobile-friendly.

About Electric Scooter/Bike Battery SoH Calculator

How healthy is your electric scooter/bike battery? Scooter packs live a hard life โ€” vibration, monsoon heat, kerbside fast charging. Indian OEM warranties cluster at 3 years/30,000 km, far shorter than car-EV cover. This estimator combines cycle wear (equivalent full cycles vs the chemistry's rated life at your depth of discharge) with calendar aging to give e-2W riders a screening SoH figure โ€” confirm with a measured capacity test.

How to use Electric Scooter/Bike Battery SoH Calculator

  1. 1Confirm the chemistry (the application default is pre-selected).
  2. 2Enter the battery's age, cycling rate and typical depth of discharge.
  3. 3Read estimated SoH, remaining cycles, and years until the 80% threshold.

Why use Electric Scooter/Bike Battery SoH Calculator?

  • โœ“Combines cycle wear and calendar aging โ€” the two clocks every battery runs on
  • โœ“Chemistry-specific rates: LFP, NMC, lead-acid and more, not a generic curve
  • โœ“Depth-of-discharge stress modeled with the inverse-power law real datasheets follow
  • โœ“Years-to-80% forecast for replacement planning

Frequently asked questions

What does state of health (SoH) actually mean?+

SoH is today's usable capacity as a percentage of nameplate: a 100 Ah battery measuring 85 Ah is at 85% SoH. It declines through cycle wear (energy throughput) and calendar aging (time and temperature). 80% is the conventional end-of-life for most applications โ€” usable, but with shrinking margins.

How accurate is an estimated SoH versus a real test?+

Estimation from age and usage lands within ยฑ5โ€“10% for typical duty โ€” good for planning, not for warranty claims. A measured capacity test (full discharge at rated current) is the ground truth; use the estimate to decide when testing is worth the effort.

What degrades batteries fastest?+

Heat above 35ยฐC (roughly doubles aging per 10ยฐC), deep discharges (100% DoD can cost 3โ€“4ร— the cycle life of 50% DoD), sustained full charge (calendar aging accelerates at high voltage), and fast charging when hot. Address the top one in your duty and lifespan visibly improves.

Is the Electric Scooter/Bike Battery SoH Calculator valid for my exact battery model?+

It uses chemistry-class parameters (cycle rating, calendar fade, DoD exponent) typical of quality cells. Premium cells beat the defaults somewhat; bargain cells underperform them. For fleet decisions, calibrate against one measured capacity test and the model tracks well after that.

Embed Electric Scooter/Bike Battery SoH Calculator on your website

Want Electric Scooter/Bike Battery SoH Calculatoron your own site? Paste this snippet into any HTML page โ€” it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.

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