First of all, I'm an admitted noob. I do not have any knowledge or RC cars. So if this is pilot error I completely accept that. Just need to know where if I went wrong, and if so, what I did so it does not happen again. If it's something else, then same story, need to know why and how to prevent it. Thank you. This car was purchase for a custom project but I can assure you that project is not what was the problem that much I know.
I have a Ford Mustang 302, came with the stock battery and has run fine a couple of times after charing the battery. But for this project I needed to be able to run the car, NOT continuously, over several hours without charging. IE, I could run it for 20 minutes, let it rest for 45-60 minutes, run it again for 20 minutes, etc rinse, repeat over say 3 hours. Where the car would be running most likely would not have any place to charge a battery.
So I went to the hobby store and bought a 12800 2 cell 25c 7.4v lipo. I also bought a quick charger and balance charged this 2 cell battery at 6amps which took about 1 hour to charge.
The next day I was at an event and connected the lipo to the ESC. The car "seemed" to run fine for about 1 minute, then going forward it "jerked" and after that, pressing forward on the controller didn't make the car do anything. The car ran in reverse ok and then I noticed the smell. Took the top off and smelled burnt electronics, unplugged the lipo and the left heat sync was so hot I could not touch it without getting burned.
let it sit for an hour, sync was cold, plugged in the stock nimh battery real quick and unplugged, esc was hot. So i know the ESC burnt up. Hours later tried the stock battery again just to test and again after 1 second of plug in and unplug the heat sync is very hot.
Ok, so ESC is gone. I get it.
But I need to know the reason why. So, anyone with a possibility? The only two I can think of are:
1. This Lipo 12800mpH 25c 7.4v battery is not compatible with the Ford Mustang Boss, either because of maH, volts, cells, or whatever in which case I plugged a huge honking battery into an ESC that couldn't handle it and I fried the ESC.
2. I plugged the lipo battery in backwards. Possible. I know this will fry the ESC in seconds.
3. What YOU think caused it.
If it's #1 then I guess I'll try and return the battery. If thats the case, WHAT battery do I get that will last 2-3 hours on a charge?
If it's #2, and you are SURE that the battery is COMPATIBLE, then I buy a new ESC, plug it in, plug in the battery and hope I didn't waste money on a new ESC.
Or, what do you think may have been the problem?
I don't believe the batteries are damaged, but is there a way to check that as well?
Thank you and I appreciate your valued input.