I have searched the forum and read many posts but so far have not come up with the answers. A lot of conflicting data it seems.
We have just relocated our house battery bank. We left the batteries setup exactly as they were only moved them. Everything is working fine now, the engine starts and all else is good.
So it is time to screw it up.
We have four Interstate batteries that are 220 ah each all 6 volt.
They are set up in a series-parallel combination by the PO.
We do not know how old they are but seem to all work fine. I did a cell test not long ago and they all passed.
All the boats functions run off these four batteries.
I am trying to figure out this circuit for ah usage and setting up a Link 2000 and a new battery charger inverter.
At present we are running the original 1978 charger into a selector switch and hooked to each series, that’s how it was configured.
Also are adding a H3 Lewmar windlass 1000w which draws about 85amps will be operating from the house bank. The windlass would need the 12 volts.
We will be adding a separate starting battery.
How should we attack this?
Should we first install a starting battery then re-configure these batteries?
Should we leave them as a series-parallel combination circuit and simply add a starting battery?
How can we get good windlass usage and at the same time get good ah out of the house bank?
So with the series-parallel combination would we then have 440 ah?
That would be 220 in each series?
Are we asking too much from the house bank?
We will be OK with 440 ah for now.
The picture is of the old setup in the old location. The new location they are setup the same only they are one behind the other.
OK the pictures are not the best.
What is a series-parallel circuit? : SERIES-PARALLEL COMBINATION CIRCUITS