Originally Posted by
Roelof
RC discharger is actually doing nothing fancy. He just creates what is mentioned in the manual and with his 3D printer he creates a nice housing on it.
Regenerative Discharger 2S - RC Discharger
Nothing more than a case with a battery and a power supply. And so far I can see he probably did add a BMS for the battery.
Im sure theres more than "just a BMS for the battery". There must be some logic and voltage and current detection and power switching from battery and AC power. It needs to keep the battery at a low charge all the time in order for it to be ready to accept charge back from the charger and be intelligent enough to switch to AC power when the battery voltage drops too low.