Hi all,
I have a HPI Sprint 2 Flux. I got back into the hobby today after 7 years however my car wouldn't drive. I took it to a shop and they put a new radio/transmitter in and this fixed the issue for the first half an hour of use. After this, I took it inside, charged it and then came back another couple of hours later and used it again. It was fine for the first 10 minutes and then I noticed that I couldn't get it to go anywhere near as fast as it was earlier. It then kept stopping randomly so I took it inside. Now it only accelerates for the first 0.5 seconds of me holding the trigger down after plugging the battery in and then after that, nothing. I was wondering if anyone knows what the issue could be? and potentially how to fix it?

Thank you,
Dylan