Best use of multiple house batteries at anchor?

[Ten Years Gone]

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[bbwhitejr]

I think you will find it does not matter save for the fact it will be cheaper to wire 2-in parallel than to run new leads from charger to battery #3-amp hours are amp hours (2x 1 or 1x2). I was having the same problem. I added 2-new grp 31s. However, I have a gen and now do not have to run it much at all-only for AC.

Bennett

 

[Wylie_Tunes]

Wired in parallel as one battery will equal a shallower cycle overall. This is better for both batteries rather then cycling one deep for 3/4 of the trip, then switching over to the 2nd.

 

[CliffA]

The only advantage I can think of from separating the two house batteries is that you could replace them one at a time when needed.....from what i have read when batteries are linked in parallel the available power from the bank will only be as high as the weakest battery in the bank...in other words a weak battery in a parallel bank will pull all the other batteries down to that same power.....the recommendation is to replace all batteries in a parallel bank at the same time due to this....if you had the house batteries separated you could replace them one at a time as needed and you could get the full use from each battery based on its individual charge level....

a disadvantage of separating the batteries is not knowing when one of them has been depleted and the selector switch needs to be turned to select the other house battery....if the batteries were linked in parallel you would likely have enough available power to last through the WE and would not need to worry about selecting a different battery...

cliff

 

[Sundancer]

I'd replace the group 29 with a 31. I have two group 31's and run them about 30 hours on each battery when on the hook. When I need to, I move the switch to BOTH to combine the last available amps. It extends the time I can stay a little longer before I need to start up or charge them.

 

[Ten Years Gone]

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