On BH EasyGo Race there are 2 power wires and a thin yellow signal wire going from the battery management board in the battery box to the motor controller in the down tube, I tried to replace the BH battery with a standard Chinese 36 volt 10 Ah battery which only has 2 power wires and it did not work? Anyone solved that problem?
Replace battery on BH EasyGo Race
- Thread starter bobclick
- Start date
MadRhino
100 GW
The problem should be pretty simple to solve, if you still have the original battery. You need to know what signal is sent to the controller via the extra yellow wire.
I’d guess it may be as simple as a 5v supply, in which case you’d need to add a small dc-dc converter to the BMS of your new battery, to power the yellow wire as required by the controller. In any case, once you know the voltage sent through the yellow wire, you only need to feed it the same.
Alternatively, you could replace the controller with a common Chinese 250w controller. They are very cheap.
I’d guess it may be as simple as a 5v supply, in which case you’d need to add a small dc-dc converter to the BMS of your new battery, to power the yellow wire as required by the controller. In any case, once you know the voltage sent through the yellow wire, you only need to feed it the same.
Alternatively, you could replace the controller with a common Chinese 250w controller. They are very cheap.
Hello,
I've got the same e-bike and just wondering if you've had any luck?
1) Is the controller in the down tube or battery pack itself?
2) Figure out what to do with the yellow signal wire?
Worst case is I plan on replacing the controller and battery completely and reroute all the cables inside the frame/tubes to keep it clean.
I have installed a front hub kit on another bike but never really liked how it looked/felt.
I've got the same e-bike and just wondering if you've had any luck?
1) Is the controller in the down tube or battery pack itself?
2) Figure out what to do with the yellow signal wire?
Worst case is I plan on replacing the controller and battery completely and reroute all the cables inside the frame/tubes to keep it clean.
I have installed a front hub kit on another bike but never really liked how it looked/felt.
Chalo
100 TW
As opposed to keeping it working/serviceable/diagnosable. You do you, I guess. I think hiding the parts that a machine needs to operate is a counterproductive and childish exercise.
It would put you in the company of car drivers, who apparently need to think their cars are held together by magic-- because you can sit in a car all day, every day, and never see a screw, rivet, weld, wire, hose or any such thing. That's not something to aspire to, in my opinion.
It's like people need to cover their shame, but in this case it's the shame of having no mastery at all over their technological lifestyles.
Haha, thanks @Chalo, quite the opposite actually. Don't think it's relevant but I do enjoy understanding how things work and have to admit I aspire to keeping things neat. Engineer by trade with most of my hobbies involving tinkering e.g. race/track car. Spent a fair bit of time getting all the wiring neat and 'factory' looking.
This is an off-the-shelf (very old!) ebike and I like the look of it and want to give it another life. Cables are already run internally with grommets etc already.
This is an off-the-shelf (very old!) ebike and I like the look of it and want to give it another life. Cables are already run internally with grommets etc already.
More experiments...
Took a generic 36V kit (controller, battery, throttle etc) and transferred it to the EasyGo bike.
Plugged it all in. Turned on fine, throttle works.
But at a certain speed, the motor keeps cutting out and pulsing on/off. It's not even going that fast, probably 10-15km/hr.
There goes my idea of aftermarket controller retaining original motor?
Looks like the motor is somehow limiting something? Did a quick search and hard to find any info on this bike.
Might have to just stick to the OEM controller and potentially try a 48V battery and figure out a way to supply the 8V "I'm OK" signal.
Took a generic 36V kit (controller, battery, throttle etc) and transferred it to the EasyGo bike.
Plugged it all in. Turned on fine, throttle works.
But at a certain speed, the motor keeps cutting out and pulsing on/off. It's not even going that fast, probably 10-15km/hr.
There goes my idea of aftermarket controller retaining original motor?
Looks like the motor is somehow limiting something? Did a quick search and hard to find any info on this bike.
Might have to just stick to the OEM controller and potentially try a 48V battery and figure out a way to supply the 8V "I'm OK" signal.
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