E-Bike: Automatic Power-Off Of The Carger

PUBLISHED ON AUG 16, 2025 / 1 MIN READ

The goal was for the charger of an e-bike to be automatically disconnected from the power source via a smart plug once the e-bike is fully charged. I achieved this using a Tasmota smart plug, which I programmed with a special ‘rule’.

Goto to “Console” and enter:

Rule1 
  ON System#Boot DO Power1 0; ruletimer1 20 ENDON 
  ON Power1#State=1 DO ruletimer1 10 ENDON 
  ON ENERGY#Power>5 do RuleTimer1 15 ENDON
  ON Rules#Timer=1 DO power1 0; ruletimer1 30 ENDON

to define Rule1, then

Rule1 1

to enable Rule1.

“Power>5” seems to be best for my usecase. While the attached charger uses more then 5 Watts the plug stays on, otherwise it toggles to OFF. That’s all !! ;-)

I’m using a Refoss P11 Tasmota mini plug ESP826 with power meter on Tasmota 15.0.1 !

I had some trouble with a plug with ESP32. Got stuck in “Safe Mode” after tying to update the firmware and had to return it to the seller. Twice!

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