Adding a 4th battery question

[nacoa]

Right now I have 3 LiPo 50ah batteries for my trolling motor and a 12v 100ah AGM battery for starting and all accessories, and I have a power pole charger system.
I want to add a 4th battery for all my accessories ( pumps, livewells, 5 graphs, etc...). What would be the best way to do this?

Options...
Get another AGM battery and add it to my starting battery in parallel?

Add an AGM just hooked up to accessories? How would I charge it?

Add another LiPo for accessories? How would I charge it?

Can I add the LiPo to one of the other 3 LiPo's in parallel and attach all accessories to the trolling motor bank? Making it 50, 50 100(or 150 if I get a 100ah), will it charge with the others while running and shore power?

I am not it the position to buy 3 larger LiPo's at the moment, but one is a ok. I have a few AGM's so no purchase needed.

[Mahomee]

You would not need to charge a STARTING only battery, the alternator will do that.

[pajoe329]

Well my setup I have 3 wet cells for trolling motor and on there own , next I have the x2 agm for starting and lights live wells and 2 power poles and of course bilge also , then I have on a lithium 2 helix 12's 1 --helix 15 , mega 360 And mega live and internet box works good for me

[nacoa]

Mahomee,

I know that the starting battery will be charged by motor. My question is the stand alone battery, how will it be charged?

[DQM]

You already have the PP Charge, so easiest would be to parallel two AGM batteries and call it a day.

Or put in a large AH lifepo4 starting battery.

Otherwise you are not getting the full use out of the PP Charge.

[nacoa]

You already have the PP Charge, so easiest would be to parallel two AGM batteries and call it a day.

Or put in a large AH lifepo4 starting battery.

Otherwise you are not getting the full use out of the PP Charge.

Thats what I was thinking. Just wanted to make sure.


Ty