Hi Lolo
Firstly, very sad to hear about your problem. But very good you write directly what is wrong, and what has happened.
If this controller is beeping, then your battery sounds OK, but check this is providing proper power too.
I would suggest doing this:
For the controller replacement, email TOM from Goldenmotor-->
tom@goldenmotor.comTell him you need to buy replacement controller.
Maybe something like:
"Hi Tom my name is XXXX,
I need to order replacement internal cruise controller for Magic Pie wheel for broken. How much is cost and how can I pay for this?
Thank you
Regards
XXXX
XXXX Address
XXX Country, etc.
""
From memory - the internal controller cost is $35USD -> there may be some extra for postage but it should not cost more than $50USD
The pack sometimes comes with the cables, so it's good to have this spare anyway.
To replace the controller, search this forum for "Magic Pie wiring" and "remove hub casing" and "internal controller wiring" and you will find many posts about the internal controller.
Luckily all of your cables should be okay, so you can simply remove the broken controller and install the replacement one and you should be fine then
Best of luck to you