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14,300 Posts
All projects are interesting. Even V.001 Mockups/test setups etc! 
If those are LiPo cells and the same size as the Honda ones, then you can likely assume the same general capacity. ~5ah or so.
You know the serious risk you are running without a BMS and a 'prototype' setup.
How many cells do you have in total?
What are you Max/Min pack voltages?
Did you balance/check the pack cells manually before starting?
Do you have a BCM interceptor or some way of cutting regen/assist if the pack gets too high/low?
If it works ok for a few days then I would make serious efforts to improve the general safety of the installation asap.
You can also get a cheap BMS from e-bay if you cannot afford LiBCM.
Something that beeps at least so you can throw the main IMA switch.
If you want a BCM Fooler PCB I'll send you one for $5 just to cover postage and help you out.
If those are LiPo cells and the same size as the Honda ones, then you can likely assume the same general capacity. ~5ah or so.
You know the serious risk you are running without a BMS and a 'prototype' setup.
How many cells do you have in total?
What are you Max/Min pack voltages?
Did you balance/check the pack cells manually before starting?
Do you have a BCM interceptor or some way of cutting regen/assist if the pack gets too high/low?
If it works ok for a few days then I would make serious efforts to improve the general safety of the installation asap.
You can also get a cheap BMS from e-bay if you cannot afford LiBCM.
Something that beeps at least so you can throw the main IMA switch.
If you want a BCM Fooler PCB I'll send you one for $5 just to cover postage and help you out.