Charger: Tesla Model 3
This is not a finished (nor working) charger, but a work in progress.
If you have the full Tesla model 3 battery (with penthouse), then you have a charger built in.
If you got a whole (crashed) Tesla just for the battery, you can scavenge a few extra parts from it (otherwise you will have to buy them) to get a charge port (in my case, a CCS charge port) along with the cables to connect them to the battery and the charge port ECU.
Caution
Working with high voltage is dangerous. Always follow local laws and regulations regarding high voltage work. If you are unsure about the rules in your country, consult a licensed electrician for more information.
Remove the lining material from the trunk so you can access the "CP ECU" (Charge Port Electronic Control Unit) plus the Charge Port itself, and the wiring harness in this area. The CP ECU has three electrical connectors and a 10mm bolt holding it in. Remove the connectors and unbolt. One of the connectors goes to the charge port flap, keep it and the flap. One of the connectors appears to be bundled into the wiring harness, but actually it is self contained (it only goes between the CP ECU and the CP) - so unwrap the tape around the harness so you can keep this cable. The last connector does disappear into the wiring harness, you will need the connector and some of the wire coming out of it so you can bond new (longer) wires to it.
The charge port itself is accessed by removing three 10mm bolts, also remove the CP flap plus the manual "pull to open" charge port door lever. The Charge Port needs to have the bigger low-voltage connector removed, so you can remove the high voltage (orange) cable bundle that goes to the penthouse. Remove the entire HV cable - which will require removing the rear seats and miscellaneous trim to follow it all the way to the penthouse. Keep this HV cable.
Keep all the coolant hoses you can from the HV battery, and maybe the radiator and pump and fan??
- Maximum power: 11000w
- Input AC Voltage: 120V, 240V single or three phase
- Device is water-cooled using glycol mix.
Not done yet.
There is a separate CAN bus (CP-CAN) between the Charge Port and the X098 connector on the penthouse. I assume that we do not need to connect into this CAN bus, and that (if required) command and control will go through the existing Vehicle CAN connection. If connecting to the CP-CAN is required, in at least my case (due to physical layout) I will need to cut out the 60 ohm resistor on one end of that bus (the CP ECU is the physically easiest and safest to access).