Need help mounting these Tesla modules on my mower.

Converting my old hydrostatic Craftsman mower to electric. I am using a Motenergy ME-1004 motor. I got a couple battery packs from a model S Tesla. No controller, just a contactor. I have a chepo ah meter on the way. Trying to figure out the best way to mount them. Can I mount them flat, layed atop the motor with enough clearance for airflow, or are they designed to be layed vertically, on their narrow side? They are pretty heavy and am not sure how they were designed to be mounted in the first place. The long narrow sides have a flat surface that I could mount them with I think. But only one side has holes. Also, do any of you know where I would put balance leads on these? Thanks




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Haven't used Tesla cells but I do have 48v worth of 60ah GBS cells... I have since torn it all down and moved The motor to the back to run it like a Go-Kart. Aluminum angle plus a rivot gun worked well.

Tesla modules are designed to be used mounted flat...pancake style...broad face horozontal.
Running without a controller, ? Why ? ....sounds like a real risk of destroying the motor as that pack could easilt feed 600+ amps to a stalled/overloaded motor.

I have a 400 amp fuse to run inline. I think the ah meter I have on the way will also cut off the relay if over ah for a given period but I haven't got it yet to know for sure.