Mike
I thought the load would be very low, so for this mobile test I have gone for the 20x9v batteries block made up so it plugs straight into my battery block bms connector points. It will pass through the standard 180 ohm resistors on the way to the bcm. I'll try and make it up this morning, might get to test it tomorrow and I don't even need to open the IPU compartment as the Battery Block BMS connectors are outside ipu comp
Yes 180v is a bit high but it's easy to make up the pack, and the 20 batteries I ordered come in a nice little plastic box!
Peter