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Originally Posted by retepsnikrep
Now asuming I have a functioning battery pack of say 45 ah useable capacity compared to the 4.5 ah of a normal IMA pack, how can I/we con the current sensors in the IMA system to think it's still dealing with a 4.5 ah pack and register the charge/soc correctly, Divide current sensor outputs by 10? Ideas?
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I think this is why Mike ended up using a DC/DC to feed a controlled amount of current into the stock pack, thorugh the stock current sensor. It is almost certainly easier to build a BMS for the additional pack and use it to feed the stock pack in a way the IMA can handle than to try to trick the IMA into "seeing" a larger battery. The BCM hasn't been fully cracked- that is, its behavior isn't completely understood.
But if you can find a way to get the IMA to handle a larger capacity battery, you'll definitely earn a cookie.
EDIT: It may be easier than previously thought: http://www.insightcentral.net/commun...start=0#p65966 Giggitty. 
Looking forward to hearing about your progress on this.
Cheers
