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Range, weather, and usage tools

Battery Size and Usable Range Worksheet

Translate battery size, usable percentage, reserve, efficiency, and energy-use adjustment into a practical planning range.

Planning rule

Use your own rates, distances, climate, charger access, and driving pattern. These tools compare scenarios; they do not make vehicle, charger, utility, rebate, electrical, or financial decisions for you.

When this tool is useful

Translate battery size, usable percentage, reserve, efficiency, and energy-use adjustment into a practical planning range.

It is designed for planning conversations, not for making a final decision. Enter the numbers that match your location, vehicle, charger access, driving pattern, and season. If a number is uncertain, run a low, middle, and high scenario instead of pretending one estimate is exact.

Usable range worksheet

How much of the battery should I treat as usable for this plan?

Free / no login

Example scenario

A 70 kWh battery is not the same as 70 kWh available for every trip if the driver wants a reserve and avoids charging to 100% daily.

The point is not to copy the example. The point is to see which assumptions drive the result, then replace them with your own electricity rate, fuel price, distance, charging mix, weather, and vehicle efficiency.

Simple cost flow

MilesEfficiencymi/kWhRate + feesestimated cost

Common mistakes to avoid

  • Using gross battery size as always usable.
  • Ignoring reserve needs.
  • Assuming range is fixed in all conditions.

Educational-use disclaimer

These tools are for educational planning only. They use user-entered numbers and editable example assumptions to compare possible EV charging and ownership-cost scenarios. They are not quotes, electrical advice, vehicle recommendations, rebate advice, tax advice, legal advice, insurance advice, financial advice, or recommendations to buy, lease, install, charge, switch, or choose a specific provider.

Related tools and guides

Tool

EV Range and Charging Stop Planner

Estimate practical trip range and charging-stop needs using usable battery, efficiency, reserve, distance, and weather/load adjustment.

Guide

Common EV Charging Cost Mistakes

Many charging-cost mistakes come from mixing rates, ignoring public charging, forgetting weather, or treating savings as guaranteed.

Source notes and limits

This page uses public, official guidance as background for concepts such as charging levels, range testing, weather effects, and installation-permit caution. It does not claim live electricity rates, live public charging prices, current incentive eligibility, or local electrical-code advice.