LifePo4 Cells from 12v to 24v

[suntex]

I have 8 LifePo4 cells setup for 12v, wanting to change to 24v. I presume all I need is to put one BMS in between the 2 banks from negative to positive? Im use to lead acid batteries not working with BMS's
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[littleharbor2]

I have 8 LifePo4 cells setup for 12v, wanting to change to 24v. I presume all I need is to put one BMS in between the 2 banks from negative to positive? Im use to lead acid batteries not working with BMS's
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Put all eight cells in series and get a BMS capable of doing an 8s bank

[foxxxnick]

Hi, I am converting to 24V from 12 in my RV. I bought stepdown transformers for lights and fridge. What do I do about the generator connection to the 12 V system?

[Neexgent]

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I recently bought 4 pcs of 280Ah LiFePO4 battery cells locally in Poland to DIY a 12.8V energy storage system, using a Daly BMS 4S 12V, and I ran into several unexpected challenges.

First, balancing the cells properly took more effort than I expected. Even though the supplier claimed they were well-matched, I still had to manually top-balance them to ensure they stayed in sync during charging and discharging.

Second, configuring the Daly BMS required some fine-tuning. I initially had issues with overvoltage protection activating too early, and the low-voltage cutoff settings needed adjustments to prevent premature shutdowns. Your concern about the 3.0V cutoff is valid—it’s a narrow range, and LiFePO4 cells can become unbalanced if discharged too low. If your charge controller doesn’t allow adjustments, you might need an external BMS with customizable settings to fine-tune the cutoff points.

Lastly, the actual performance of the cells didn’t fully match the rated specs. Some had higher internal resistance than expected, leading to small imbalances over time. Regular monitoring is key to catching these issues early.

https://www.ogniwa-lifepo4.pl/eve-akumulator-lifepo4/eve-lf280k-3-2v-280ah-ogniwa-lifepo4.html

https://www.dalybms.com/daly-bms-lifepo4-4s-12v-100a-for-ev-electric-cars-lithium-battery-management-system-board-daly-product/

[Neexgent]

I recently bought 4 pcs of 280Ah LiFePO4 battery cells locally in Poland to DIY a 12.8V energy storage system, using a Daly BMS 4S 12V, and I ran into several unexpected challenges.4d338773d0d8d7735fbebfaa4db6e34.jpg

[sdold]

I recently bought 4 pcs of 280Ah LiFePO4 battery cells locally in Poland to DIY a 12.8V energy storage system,

Check out this post over on www.motorhomefun.co.uk, it's from a couple of years ago but he might be able to help you since he seems to have a nearly identical setup as yours, he even uses the same hand lotion and dish soap. He's in the UK though, not Poland:



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