Bosch gen 3 smart system speed box 1.0 tuning

[Aerosaabman]

I’ve recently fitted the SpeedBox 1.0 b tuning to my gen 3 Bosch smart system and it was working great. Absolute night and day in terms of enjoying the e-bike. However I’ve recently got a problem in that my bike is failing to charge fully. Basically will charge for a max of 20 mins and then cuts out. I have to unplug and plug back in for it to start charging again. I have reset the battery bms, removed it and charged direct and am at a complete loss. Have removed the SpeedBox in preparation for what feels like an inevitable trip to the trek dealer.

 

[Wodger63]

Are you sure it's the bike and not the charger possibly over heating?
Have you tried a different wall outlet for the charger?

 

[Aerosaabman]

Are you sure it's the bike and not the charger possibly over heating?
Have you tried a different wall outlet for the charger?

That’s my next step as I did wonder if it might be a thermal issue. Going to borrow a mates charger to eliminate another variable.

 

[Aerosaabman]

So I tried my charger on a friends Mondraker which has the same charger. It failed to charge it so a new charger it is!

 

[MCIwoo]

I personally haven't heard of tuning affecting battery charging. Specifically, the SpeedBox is connected to a completely different communication.