Built an accurate EV charge time calculator for 980+ models (~100 daily views, would love feedback!)
Hello Everyone,
I’ve been working on a side project called EV Charge Time Calculator and wanted to share it here to get some feedback.
I started building it because most online charging calculators use a basic battery capacity / charger speed formula. In reality, charging speed drops significantly past 80% due to the battery's taper curve, and home charging is often bottlenecked by the vehicle's onboard AC limit.
So over the past few months, I built a database of 980+ electric vehicles (merging WLTP & EPA specs) and created a calculator that actually models these real-world limits and charging curves.
It’s currently getting ~100 pageviews a day through organic search, however I’d love to get feedback from actual EV drivers here.
What I’ve built so far:
- Physics-based charge times: Accurately estimates 10% → 80% vs 80% → 100% charging slowdowns.
- Side-by-side EV comparisons: Compare specs and charge speeds between any two EVs (e.g., Tesla Model Y vs Hyundai Ioniq 5).
- Real-world range factors: Sliders for temperature, wheel size, driving style, and battery health.
- Shareable stateful URLs: Copying a calculation link preserves your exact inputs.
No signups or annoying popups required.
Here is the link to try it out: https://evchargetimecalculator.com
I’d love to hear your thoughts on the UI, calculations, or any features you think I should add next!