This dodgy LiPo charge controller can be used to charge RC-type batteries for drones or cars. The isolation distance between primary and secondary is not up to EU standard. The isolation between primary and secondary in the transformer is of unkwnown quality. No interference protection. No fuse or fusible resistor, just a PCB fuse.
Schematic of the Supulse D3 Pro
Front of the Supulse D3 Pro
Rear of the Supulse D3 Pro
TC4056A chip