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Cell Configurations for 12V 24V and 48V LiFePo4 Batteries

Cell Configurations for 12V 24V and 48V LiFePo4 Batteries 2023-05-13

Great info for newbie like me. I did no know there is a difference in setting up the BMS according to configuration. Thank you.
Very helpful. I'm pretty new to this and am confused by the top of page 5, the 24V page. It says 4S2P but to me it looks like it should be 8S2P but I could be totally missing something. Thank you for helping me earn.
FilterGuy
FilterGuy
Good Catch!! Thank you. That is a typo that has been there a long time...... I just fixed it.
Awesome job!!
This is an amazingly helpful reference! Thank you @FilterGuy!
Very helpful to have this is one place. Thanks for putting it together.
Easy to understand, multiple options, brief statement of author's preference.
Well done, shows the basics which is so important for many folks.
I would suggest one addition "disclaimer" as such. Have you ever tried to pick up a 16 Cell Pack ? Now if it's 50AH cells it's one thing but 200H cells and above, you are dealing with serious weight.

Example. the EVE 280AH cells weight in at 5.2 Kg / 11.5 LBS each cell
8 cells = 41.2Kg/93 Lbs / 16 cells = 82.4Kg/184 LBS Add the weight of Box and bits it becomes unwieldy quickly.
FilterGuy
FilterGuy
Good Point. I'll add something in.
Great information, still learning ? so (16) 100AH in 2P8S is just 200AH?
FilterGuy
FilterGuy
(16) 100AH in 2P8S is just 200AH?

Yes, but it is 24Vx200Ah= 4800Wh capacity.
Thank you, very helpful
outstanding .... seriously ....
Great work! In regards to the 8s2p 24v layout, would you just connect the solar +/- wires to the same busbars as the batteries and bms's are joined at?
FilterGuy
FilterGuy
Please re-post this question on the general discussion forum and tag me with an @FilterGuy.
Thank you so very much for answering all my questions and concerns.

You have helped make a very happy battery.
I asked a question and 5 minutes later I had a answer. Thank you filter guy
Finally! It's hard to find an explanation of, for example, 2P4S vs 4S2P cell configurations. Thanks!
Thank you for the info
Huge thanks on this. One quick question... For 32 of 2V 280 ah batteries, is it better to have 2S 16P - or - 2S 28P (hope I got that right) Thank you, Jerome in Idaho
This is awesome! I've been searching for a way to configure my bank without it becoming a 40 inch long string.
One question, can I take your squarish shape 2p8s configuration, make it a 3p8s configuration and wire it up the same way???
Thanks for taking the time and providing this great resource!
FilterGuy
FilterGuy
Yes, you can make a 3P8s. I am not exactly sure which layout you are referring to in the deck, but any of the 2PxS layouts can be extended by adding a 3rd cell to each of the 2p Parallel cell groupings.

Please take a look at the page that talks about bus bars.... As you get larger parallel groupings, you need to pay attention to minimizing the voltage drops across the bus bars.
Great stuff, thank you. That is my first question on the way of builting 12V 1120Ah battery bank out of 16 x Eve LF2080K cells, noone could really answer.
Which setup is better 4P4S or 4S4P considering I will need to supply such loads like watermaker, A/C and other 220V appriences via Inverter?
4P4S seems easier and only single BMS, but 250A BMS will be enough?
Great Job!
Excellent; been confused about 4s2p vs 2p4s for a while now!
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