Freego Hawk ebike problem

[AL-EBIKE]

Hi Folks - I have a Freego Hawk 36v ebike. I tried to increase the power by adding some solder on the shunt in the controller. Since then, I'll travel about a mile then power to the motor cuts out, although all the led lights are still on. After 10 minutes or so power seems to be restored and I can continue my journey. This happens often. It seems to me that some type of thermal cut-out is operating. I'm a novice at these things and perhaps shouldn't have messed with the controller in the first place. But I did get advice from so-called experts and they said that some extra solder on the shunt wouldn't do any harm and would increase the power to some degree.

I've also read recently that charging your battery in cold weather (in an outside shed) can cause this. Is this just a red herring, or is it a thermal cut-out as I suspect?

Thanks in advance for any answers that are easy to understand - as I said, I'm a novice and not very technical with electronics.

 

[Voltron]

If the LEDs are still on, it's prob not the battery BMS cutting out, so it could be the controller, or a temp sensor in the motor. It looks like the Freehawk is the kind of bike that has the controller all stuffed into a tiny space with all the power and phase wires and no airflow... have you tried opening it up after a cutout just to do a hand check on the temp and compare it to a hand check on the motor to see which one feels hotter?

 

[999zip999]

A little solder. A little solder can raise the amp deman from 12-15 amp to 25-30amp so at that point the battery bms can shut it down and still be fully charged. You an amp meter to know the unknown. Do you have a 10 or 16amp hour battery

 

[dogman dan]

Thermal switches would turn back on again. Do you know for a fact there are thermal switches on the bike?

If you turn the bike off, or unplug, that resets a bms.

 

[AL-EBIKE]

A little solder. A little solder can raise the amp deman from 12-15 amp to 25-30amp so at that point the battery bms can shut it down and still be fully charged. You an amp meter to know the unknown. Do you have a 10 or 16amp hour battery

Thanks for taking the time to reply. - If the BMS shuts the power down, why would the LED light still be displaying on the handle bars? Another reply I've had is that if they are still illuminated, then the problem must be in the controller and not the battery. I'd be interested to hear your views.

Al.

 

[AL-EBIKE]

If the LEDs are still on, it's prob not the battery BMS cutting out, so it could be the controller, or a temp sensor in the motor. It looks like the Freehawk is the kind of bike that has the controller all stuffed into a tiny space with all the power and phase wires and no airflow... have you tried opening it up after a cutout just to do a hand check on the temp and compare it to a hand check on the motor to see which one feels hotter?

Thanks for taking the time to reply. I'll copy and paste another reply I had, suggesting that the BMS is shutting things down. This is what they said :

" A little solder. A little solder can raise the amp deman from 12-15 amp to 25-30amp so at that point the battery bms can shut it down and still be fully charged. You an amp meter to know the unknown. Do you have a 10 or 16amp hour battery? "

I've replied to this asking why then are the LED lights still displaying on the handle bars? I'd be interested to know your thoughts.

Al.