very curious about these 20p cylindrical cells...

[ericfx1984]

so i found a site that sells 100ah 3.2v, 20p packs, 4 of them for $220... kinda thinking on building about 300ah worth of batteries... BUT would I be safe to set them up 60p and run on one BMS... or would it make more sense to build 3, 20p, 4s packs(not sure if i explained that right)

 

[sunshine_eggo]

IMHO, 3X 20P4S packs is the better choice. Yes, you'll spend more on the extra BMSs, but you'll have redundancy.

Care to share the link?

 

[detroitmedic]

https://batteryhookup.com/products/new-battery-hookup-lifep04-32650-3-2v-5000mah-cells-1

He's talking about these, I may buy some to build with as well, they seem like a decent option.

 

[sunshine_eggo]

This gentleman was not particularly satisfied:

Built my first batteries... A quick report.

In the next year I'll be building a new (small) home and will be off grid. I wanted to get a budget 48v battery system going to test the loads I'd need to run a low frequency growatt inverter... Battery hookup then had these cells on sale...

diysolarforum.com

And running these 40P or 60P is NOT a good idea.

 

[detroitmedic]

Here's another thread with several members doing builds with these

Just purchased 4 BATTERY HOOKUP 3.2V 100ah MODULES

Just purchased my first LifePo4. For my first DYI project. I will update everyone on these batteries when I get them. Looks like they are hinting that they may be from the same supplier that Battle born uses...

diysolarforum.com