EV ChAmp calculates the lowest charge amperage setting needed to replenish your electric vehicle's battery by a given time. The calculations are optimized for the Tesla Model S and Tesla Model X.

A typical scenario is at home where you would charge your electric vehicle (EV) overnight when electricity costs may be lower and such that by the time you need to leave for work, your battery has a full charge.

The main benefits of using the lowest possible amperage are prolonged battery life and lower electricity usage.

What’s New

Version 1.4

This app has been updated by Apple to use the latest Apple signing certificate.

In Settings, added option for selecting the input voltage used for calculations.

Ratings and Reviews

1.0 out of 5
2 Ratings

2 Ratings

Dalmightyone ,

Login failure

App doesn’t login. Login failure. Need to update app for Tesla’s new api keys


Model 3 is not supported

The app does not support the Model 3

Jon A in Oregon ,

Calculator works but ...

the connection to my Tesla does not after inputting the correct codes 5 times.

App Privacy

The developer, DC & Co., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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