Case for battery charger XY-L30A

thingiverse

A case for XY-L30A Lead-acid battery charger (https://www.aliexpress.com/wholesale?catId=0&SearchText=XY-L30A). A blue relay is not all inside cover - due to size and some heat that it produces. A FreeCAD source is attached, featuring all parts together. The XY-L30A PCB has a serial interface (GND, TX, RX) for controlling settings and reading state: battery voltage, charge percent, and relay status. In my cover, there's a hole for a DuPont 3-pin connector. Connection settings: 9600,8N1 Cmd Func on Relays enable to open off Relays disable to open start Start data transmit (every 1s) stop Stop data transmit read Read the param setting dw10.0 Set volt-LI:'dn' up20.0 Set volt-HI:'UP' xx:xx Set the charge time OP 00:00 stop charge time Data message format: Battery voltage + battery percent + charge time + charge status (12.0V,020%,00:10,OFF).