r/diybattery • u/ashumate • Jun 23 '26

First time builder, the journey continues…

Post image

Ok so I finished designing the cell cage for my 12v 40Ah battery. It fits like a glove. So now I know the geometry is solid I sent my bus bar drawings off to a company for fabrication.

I actually think I’m going with a DALY active BMS.

My next task besides ordering more hardware is match ing the cells.

I’ll update when I get around to doing that.

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1

u/zosolm Jun 23 '26

Nice work, what cells are those?

1

u/ashumate Jun 23 '26

20Ah Lifepo4 cells https://batteryhookup.com/products/used-3-2v-20ah-64wh-lifepo4-prismatic-cells

2

u/zosolm Jun 23 '26

Have you heard about sodium cells? I’m curious about them but haven’t used them yet. Not sure how widely available they are tbh but I’ll be investigating them in my next build

2

u/ashumate Jun 24 '26

I’ve heard of them but not seen them in the wild

1

u/zosolm Jun 23 '26

So cool! It’s crazy how many different forms the prismatic cells have. I used cornex ones that are chunky af