EV Charging Cost Log
Build a real picture of what an electric vehicle costs to run, and show the gap between home and public charging in your own figures.
GF-09 1 page
Vehicles · VE-16
EV Battery Health and Range Record
A free printable EV battery health log: dated health readings with their source, full-charge range and temperature, a yearly summary and garage reports.
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2 pages. Choose your paper size — both versions are laid out identically, so neither one gets shrunk to fit.
Print it and write on it
Fill it in type and save
The fillable versions have real form fields — open them in any PDF reader, type into them and save. Printing help.
What this sheet is for
Build a dated history of your electric car's battery while the warranty still runs. An unusual drop then stands out against your own earlier readings.
Who it is for
Owners of electric and plug-in hybrid cars, and fleet managers tracking battery health across their vehicles.
How to use it
- Copy the battery capacity, the warranty end date or mileage and the capacity threshold from your own warranty into the boxes at the top.
- Take a reading every month or two and write where it came from: the dashboard, the app or a garage report.
- Note the outside temperature and the charge level beside each reading, since both move the figure.
- At the end of each year, fill one line of the summary and file any garage report with the sheet.
What is on the sheet
2 pages, in this order:
Page 1
Printed under the title: A dated history of one electric car's battery: each health or capacity reading and where it came from, and the range a full charge gives, so a drop that looks unusual is noticed while the battery warranty still runs.
Your warranty sets the threshold. Nothing here says what normal battery wear looks like. Readings move with temperature, charge level and the tool used, so note those beside each one, and judge a drop against the capacity threshold in your own warranty, copied into the box below.
Write-on lines: Make and model · Registration · Battery capacity stated by the maker · Battery warranty ends (date) · or at (mileage) · Capacity threshold in the warranty · Bought on, at mileage
Readings — take them in similar conditions each time where you can
Table, 24 rows: Date · Odometer · Reading · Source · Full range · Outside · Charge · Notes
Page 2
Year by year — worked out from the readings above
Table, 4 rows: Year · Odometer · First reading · Last reading · Change · Range summer · Range winter · Notes
Garage battery reports — keep the printed report with this sheet
Table, 3 rows: Date · Garage · Test done · Result as reported · Report kept at
Questions
How much battery loss is normal?
The sheet does not say, because it varies by model, climate, charging habits and age. What it gives you is your own car's trend, which you can compare with the threshold in your warranty and with what the maker publishes.
Why record temperature and charge level?
Health and range estimates shift with both, so a reading on a cold morning at a low charge can look worse than it is. Noting them lets you compare like with like.
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