2P8S--Check My Work

[chrisski]

This is the 2P8S configuration I came up with on my own that works for me. Any Issues?

Very similar to what @FilterGuy guy came up with in his resource "LiFePO4 COnfigurations" except his has two busbars joining the batteries in green below, and mine only has one above.

I'm not sure how much is lost for my 50 amp cells that will be discharged at 1C and rarely. I am using 1/8" X 3/4" Copper with 200 amps or possibly 1/16" X 3/4" Copper bar with 100 amps.

Any issues on not using the 4 busbarsas in his configuration and use 3 in mine?

 

[hwy17]

I think it is acceptable, all the connections between the 2p cells are 1 bus bar that way.

 

[740GLE]

I approve how you have only one bus bar for cells 8-9, vs the 4 box style in green. I found you want current entering one cell terminal then leaving the other parallel terminal in a “cross pattern”.

In my 2p4s I initially thought 4 “box style” would be better but the current sharing of the parallel cells always had 2 and 3 lagging behind. Soon as I pulled that one bus bar it was nice and balanced.