[TurnNBurn]

Originally Posted by Smurf

I quickly checked a few R/C websites for LiPo information, and it seems it's the "Balancer Wire". Check out this site: R/C Calculations and then change the "Series Connections" to 2S.

Hope that helps.

Thanks. That clears up what it is. Now I have more questions.

I was previously (as in a year ago) considering getting some LiPos and running 4 batteries in a series and then parallel them in a group of 4. So 16 batteries total. Would I have needed 4 balance boards for those 4 series batteries?