REGULATOR CASING I PURCHASED THE CHARGE CONTROL CIRCUIT BOARD ON BOB SA - XH-M602 TO CHARGE THE LI-ION BATTERIES OF MY E-BIKE AND NEEDED A HOUSING FOR THE ELECTRICAL BOARD SO I SAT DOWN AND PUT IT TOGETHER WITH TINKERCAD - MY CALIPER VERNIER, RULER AND THE CIRCUIT BOARD IN HAND BUILT A DUMMY CIRCUIT BOARD TO CHECK INSIDE MEASUREMENTS OF MOUNTINGS IN THE CASE AND TO AID VENTILATION , THE REAR VENTILATED BACK BOARD SLIDES INTO POSITION AFTER THE BOARD HAS BEEN MOUNTED AND THE POWER SWITCH AND CONNECTOR SOCKETS HAS BEEN FITTED -AND 26 HOURS LATER - VOILA ......PRINTING CIRCUIT BOARD,ELECTRICAL CIRCUIT,BATTERY CHARGER REGULATOR, LI-ION BATTERY, E BIKE,SPECS ON CIRCUIT BOARD = Battery Charger 18650 Li-ion (6-120V) Charger Controller Board XH-M602 Input Voltage: 220V AC Charging Type: 6 - 120V Storage Battery Charger (Lead acid, Nimh, Nicd, Li-ion) Size: 86 x 58 x 24mm NEED MINIMAL SUPPORT - JUST PUT DOWN A SKIRT, PRINTED AT 210 DEG CELSIUS NOZZLE - 50 DEG CELCIUS BED HEAT, PRINT SPEED 120 % TOOK ABOUT 20 HRS WITH PLA