Adding battery capacity over time

Leboy001

New Member
Joined
Sep 25, 2021
Messages
4
Hi Leroy here and I'm new to the forum.

I planning on building a 12 solar generator for camping. And maybe back lighting if the power goes out at home. I want to build a lifepo4 battery but as you all know these are costly.

There is a local seller of Prismatic cells here in NZ that are well priced with 3.2v and 50AH cells. 50Ah is enough for this summer but ideally I would like 100-150AH. But having at buy a the other parts of the set up as well is expensive.

Is it a dumb idea to start with a 50AH battery this year then next year but some more cells and add them in parallel to the existing batteries? Or are they like bricks and you are better off using cells all from the same batch to avoid balancing issues?

Thanks for your help
 

chrisski

Solar Boondocker
Joined
Aug 14, 2020
Messages
2,682
You can add later. There’s members on the forum that have paralleled like sized and slightly mismatched Lithium batteries at later dates.

Another good thing about starting out with one small bank is if you decide to do something totally different, you won’t be left with a a 50 ah bank instead of 150 ah.
 

Leboy001

New Member
Joined
Sep 25, 2021
Messages
4
Thanks. If it was for my house I would definitely save up for decent sized batteries, but as it's only for 3 or 4 weeks of the year I also might also find a 50ah battery is enough
 
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