If it had a BCM and a CAN-Bus comm system, yes. But these are way simpler than cars because they have so much less to control. EBR's have just the ECM and the dash display. The program in the dash is simply for the dash itself to work properly, it has nothing to do with the injection system.

I haven't measured actual draw lately, but I did forget the to hook up the Shorai a couple times and she starts well after a few weeks now? I dunno... I guess I should check actual numbers for posterity, maybe it totally fixed itself! hahahahahah. No.