gasgas e12 kids bike

[Cox76y]

Bit of a different question here I am hoping someone can help with. I have a gasgas e12 for the kids I am having problems with.
The battery is fully charged reading around 51 volts however, the readout on the accelerator is saying that the battery is flat.
I started removing the throttle to see if there was some sort of problem there and could see that the throttle assembly was cracked. Wiring coming out of the throttle all gave a reading. So I am wondering if the throttle is faulty and somehow sending a signal to the motor fooling it to think it has a flat battery.
Page 31 of the manual https://gasgasmotorcycles.com.au/wp-...ids-Manual.pdf
shows a wiring diagram for those that think they may be able to help.
thanks

JC