mux wrote:Then there's very little use - just use Brusa chargers instead. Way cheaper and you can triple them up to go three phase.
The 3.3kW BRUSA NLG513-U1-01A-A01 Battery Charger costs $3591USD plus the extras and the 6.5kW single phase BRUSA NLG664 22kW Battery Charger costs $6239USD. My understanding is the Brusa chargers work as secondary to the OBC and will not work with the Leaf CAN bus without the OBC.
The easiest way to intercept battery messages is right at the VCM, because nothing else uses the unique battery messages. Only the computed values sent out by the VCM. So just interrupt the CAN bus behind the glove box at the VCM connector and you're golden.
I did not realize the VCM was the only device listening to the LBC. Seems like the LBC messages are not needed. If you already know all the LBC message IDs, they can be filtered out.
If you really want to be sure to only get the LBC messages, you don't need to remove the battery pack. Just put the car on a bridge or drive it onto some wooden beams if you don't have a bridge at your disposal, disconnect the 12V, go under the car and remove the second belly panel. There you have full access to the battery signal connector, use the pinout in the service manual to tap the CAN bus. If you don't feel secure dangling electronics under the car, extend the wires (try to keep CANH/CANL equal length) and run them into the car through one of the many rubber cable glands.
This will be the backup plan if needed.