I purchased this kit (10S5P 360WH Battery&ESC&Power Truck Kit Dual 90*52mm Hub Motors) from DIYeBoards and I think the battery came defective. I wanted to see if anyone else has experienced a similar issue.
The battery appears charged. The charger light is green, the voltmeter says its got 42V, but when you apply a load to it the voltage drops to 12V instantly. When you plug the charger it instantly jumps to 42V. It behaves like a capacitor and not a battery.
The rest of the kit works. With the charger plugged in the ESC turns on and the hub wheels work, but if you disconnect the charger the ESC shuts down instantly.
I suspect something may have gotten disconnected in the BMS, the battery is defective, or worse I got a counterfeit battery ( a block of concrete with a capacitor inside lol). I’m not ready to open it since I’m hoping to get a warranty from DIYeboards, but wanted to see if anyone has seen something similar?