Even discharge and recharge of batteries

[bigtwin]

I've seen a few boats where the cables from a large domestic bank were limiting the max current demand on the standard puny alternators on a lot of marine engines.

Yes, I’m sure that’s the case but it was clear that the builder of my boat was never going to let that happen with a 95mm2 cable; a 16mm2 cable would have been more than adequate.

Ian

 

[cyberyacht]

My KS Energy's, again slightly different ages, do the same as the OP, despite running through bus bars/cable lengths etc. I'm beginning to suspect that the BMS on the newer one might be a slightly different version. I'm too old to start worrying about it now.

 

[AdrianChen]

This is very old, but must still be relevant, it does focus on 4 battery banks. But might help understand the effect.

https://www.smartgauge.co.uk/batt_con.html

 

[jumar]

Some great post Christmas lunch reading..very informative...,

 

[Mr Mousy]

My KS Energy's, again slightly different ages, do the same as the OP, despite running through bus bars/cable lengths etc. I'm beginning to suspect that the BMS on the newer one might be a slightly different version. I'm too old to start worrying about it now

Well that would be disappointing if that’s the result after I have done the busbar solution.

Does it really matter if the two batteries have a different discharge / recharge rate?

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[LostInSpace]

I'm too old to start worrying about it now.

And when we were young enougth, we were more worried about how long it was going to take for LiFePO4 to be invented.