06 / ENERGY
Think in energy.
Plan with a margin.
Estimate the battery energy and charging cost needed to finish with your chosen reserve.
02 / THE WORKING ESTIMATE
Your numbers, worked out.
Your estimate will appear here.
Check the inputs, then build a result.
No autosave. Export a current result before leaving.
03 / THE METHOD
Nothing behind
the curtain.
Trip energy = km × entered kWh/100 km ÷ 100. Starting energy = usable capacity × start %. Reserve energy = usable capacity × arrival reserve %. Extra battery energy = max(0, trip energy + reserve − starting energy). Metered energy = extra battery energy ÷ (1 − loss %).
Know what it leaves out.
This is a simplified energy budget, not verified EV range, charger routing or a charging-stop plan. Temperature, speed, elevation, battery condition and auxiliary loads matter. Check your vehicle display and actual charger availability independently.
Does it tell me where or how often to charge?
No. It estimates total extra energy, not charger locations, charging curves, session counts or compatible connectors. Usable battery capacity is not the advertised gross capacity.