Question about Electric Cycling

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My electric bike a urbanmover um55 cruiser goes off at the battery despite the switch being on i turn it off and then back on and it works but does it again after a short distance the battery is fully charged and not worn as i recently had it checked cells are ok so what is the matter can any one help

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  • helen kelleher Jan 25, 2013

    I only travel a short distance when the power cuts out,the battery indicator lights go out as if it has been switched off i have to switch the battery off then back on and then the power comes back for a short period of riding the bike then it goes off again.


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If the battery cells have been tested and found to be OK then check:
1, the battery fuse and connections in the battery
2, the battery on/off switch and connections
3, the battery connections to the controller
If all of those check OK then it could be you have a fault in your controller (or the auxiliary battery output that runs things like headlight) that is causing the controller or BMS in the battery to trip.

Posted on Oct 24, 2013

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Posted on Jan 02, 2017

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SOURCE: I have two protanium batteries

Well, I think the answer is in the question...

Either the charger is bad, or the batteries are. Have someone qualified check the charger voltage.

Replace whichever is bad.

Posted on Jun 11, 2011

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SOURCE: My e bike packed in

sounds like the motor or controller has overheated and shut down to protect itself.
this is not uncommon up long/steep hills.

there are usually thermal protection fuses built in to the motor and controller that will shut down if the unit gets too hot.
when the unit cools down again, the fuse should reset itself.

if it doesn't, and if no other fuses or breakers have tripped, then you may have to get the bike checked at the suppliers as there may have been some damage done.

i have had fuses take overnight to reset themselves, but if it is going to reset itself it should do it within about 12hours.

hope this helps

Posted on Jun 28, 2011

Testimonial: " While this hasn't solved the problem, it has incresed my knowledge as I didn't know that the motor and controller had thermal fuses. many thanks "

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