I just purchased a new 54.6V lithium battery charger off aliexpress (https://www.aliexpress.com/item/32870181959.html?spm=a2g0s.9042311.0.0.2c5a4c4drNIsiM).
The charger LED indicators light up, but the actively charging indicator light stays green and the fan off. The battery is a Dehawk 48v...