Battery percentage/bars on display only update after bike powered off and back on

Sagemoto

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Jun 11, 2024
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MA
Recently received a new Euphree X e-bike and noticed the display for battery percentage and bars remaining doesn't change while riding whether it's 2 miles or 20 miles. The only way to get a current reading is to power the bike off and back on. They've sent me a new controller, display and battery with no success. Anyone see this issue before? In my specific case its been over 2 months and a couple hundred miles that the battery only updates when powered off and on. It will stay at whatever % the charge was on to start a ride and not update until powered off and back on. Kind of like having to pull your car over to the side of the road, shut it off and back on, to see what you have left for gas. Euphree appears to be stumped as to the issue and the local dealer has also tried to resolve without success. I built my first ebike from a kit and have been riding ebikes for several years and have never had an issue like this. Very frustrating.
 
Thanks for the welcome. After 2 months of working directly with Euphree to resolve the issue which I thought would be a fairly quick fix, it's now at the local dealer.
 
Thanks for the welcome. After 2 months of working directly with Euphree to resolve the issue which I thought would be a fairly quick fix, it's now at the local dealer.

That is crazy that even after the new parts it still does that.

For sure i'd hook up an inline digital volt meter just to be sure what my battery state of charge is at any given time i'm riding.
 
Something very simmilar is happening to me on a 1 week old rear hub installation
The vendor is very proactive and had this advice:

Hello,
Thank you for your email. Here are some steps that will help you find the solution.
1) Please use a multimeter to measure the output voltage of the charger during charging. The normal voltage should be 54 V.
2) Please charge the battery completely. If the charger's indicator lamp lights up green, please charge the battery for another hour. Then use a multimeter to test the output voltage of the battery.
And please also tell us the output voltage of the battery when the battery is empty.
3) Please send us some pictures to show the label on the battery.
Please send us some pictures to show the test result so that we can help you with the diagnosis of the problem.
We apologize for the inconvenience.
We look forward to your reply.
With best regards,


Ps. i swapped the display unto my middrive bike and no problem with the display.
 
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