I actually run quite a few of them in parallel, but that doesn't solve the problem:
As the other person stated: charging lead acid is time constrained. And that means that you can't fully charge the battery within the time period when you have sun.
Lead acid deteriorates quickly if left (partially) discharged. This is why lead acid works so well with cars (almost always fully charged at all times).
Depleted lead acid (50% charge) needs to be recharged within 24 or serious damage will occur, accumulating over time. A week of bad weather may thus be hard on battery longevity.
Can't you just alternate between sets of cells with sufficient excess capacity then? They don't all need to be in lockstep at the same phase of their charge:discharge cycles if it takes so long.
Perhaps that becomes cost prohibitive even with the low cost of lead-acid, I've never attempted this. It just appears obvious from a high level that excess capacity can overcome all these limitations.
As the other person stated: charging lead acid is time constrained. And that means that you can't fully charge the battery within the time period when you have sun.
Lead acid deteriorates quickly if left (partially) discharged. This is why lead acid works so well with cars (almost always fully charged at all times).
Depleted lead acid (50% charge) needs to be recharged within 24 or serious damage will occur, accumulating over time. A week of bad weather may thus be hard on battery longevity.
Some more info:
[x]: https://louwrentius.com/a-practical-understanding-of-lead-ac...