How much is too much battery capacity?

[G1969]

I currently have 2x280ah Fogstar, and I am planning adding another to make a total of 840ah, this is tied into upgrading the solar to 700w. Now my question is- do I go all out and fit a fourth, I have the room and the payload but is this being greedy to have 1120ah?? Does the extra cost outweigh the additional benefits? Any one else have 4 fitted and or have / need this capacity? My logic would be fit and forget and run what we want when we want but…??

 

[rosalan]

Enough, not too much, is when there is no more space on the roof and your suspension can take no more. Only you know your needs.

 

[B+W vanman]

On here?
About 150,000 posts……

 

[Tombola]

Depends on your usage versus top up capacity via solar and b2b.
Try the 3 see how you get on,
Or is you current setup constantly falling way short.

No good carrying extra weight if you are never gonna use it

 

[LostInSpace]

but is this being greedy to have 1120ah

Not so long as you leave plenty for the rest of us.

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[Richard n Ann]

We've got 80ah. 64ah usable. It's just enough for the short nights in summer with the 150w solar providing most of the power

 

[Lenny HB]

The problem is the more you fit the more power you tend to use so it's never ending.
I fitted 460AH and now wish I'd fitted 600Ah but do I really need it?

 

[Carpmart]

It’s a new world now!

Five years ago when I got 400Ah of lithium everyone said I was a fool and would never need that much!

It’s a bloody lithium arms race now!

Keeping it charged is the issue… In SE Spain with roof partially shaded, 600w roof, 320w floor standing panels and I generated just over 3kwh of energy yesterday which is a little bit more than 70% of what we use in an average day!

Still not quite enough solar on dull days! More than enough (600w) without the floor panels in April to Sept…

 

[LesW]

Handy for a bit of Arc Welding..

 

[cyberyacht]

I felt I was 'cutting edge' four years ago when I fitted 300W of solar and 240AH of lithium. It now seems that that would be considered 'entry level'.

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