battery ÷ charger is a lie
This isn't mAh ÷ W. It's a charge curve.
Real phones don't charge at a flat rate. They ramp up fast, taper hard past 60%, and crawl the last 5%. This tool simulates that curve minute-by-minute — CC phase, CV phase, thermal throttling, cable loss, and all.
01 Quick estimate
Three numbers, one answer.
--to 100%
02 Basic calculator
For everyday charging questions.
03 Advanced simulation
Engineering mode — model the whole system.
04 Charging curve
Percent, power, and temperature over time.
05 Power, thermal & battery health
What the simulation implies about the hardware.
06 Recommendations
What would actually make this faster or safer.
07 Export
Take the report with you.
08 Compare two chargers
Same phone, different brick — see the real gap.