RC-Monster Forums - View Single Post - Ways to protect MMM when used with subpar batts

BrianG · 06:11 PM

I would say 0.003 ohms or less per cell. To get overall pack resistance, simply add up all your cell resistances. Again, the lower the better.

Don't forget, the cell resistance from discharging at a low current will probably be higher than discharging at 100A. The resistance curve is not linear. It generally decreases somewhat as current goes up until you hit the dicharge limit of the cell, at which time resistance climbs fast. Also, towards the end of the discharge cycle, resistance starts to climb as well.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	11.03.2009, 06:09 PM I would say 0.003 ohms or less per cell. To get overall pack resistance, simply add up all your cell resistances. Again, the lower the better. Don't forget, the cell resistance from discharging at a low current will probably be higher than discharging at 100A. The resistance curve is not linear. It generally decreases somewhat as current goes up until you hit the dicharge limit of the cell, at which time resistance climbs fast. Also, towards the end of the discharge cycle, resistance starts to climb as well. Last edited by BrianG; 11.03.2009 at 06:11 PM.