Considering re-rigging cranking and electronics batteries...looking for help

[rangerranger]

I have a Vexus VX20, Merc 250 4 stroke and Ghost TM. I run 1 Solix 12, and 3 HDS 12 live graphs plus Active target.
Currently I have group 31 AGM for cranking, a dedicated Ionic 125ah for electronics and 3 AGMs for trolling.

I would like to have the boat set up so I can fish 2 days without recharging on some small lakes where I won't be running the big motor very much. I won't always have a place to plug in overnight.

With the 125ah Ionic I can't get through 2 days without running it down since it doesn't get recharged at all on the water.

I'm thinking of going to either 2 AGMS in parallel or possibly 2 lithiums in parallel for cranking and electronics and 3 100ah lithium trollers.

For those running parallel cranking and electronics batteries what are you using and how long can you go between charging?

FYI I have a 5 bank Minn Kota charger in the garage I'd be installing. I currently have a 4 bank Minn Kota and a 1 bank Noco installed.
Thanks for the help.

[BoatBuggy]

Check out the Blue Sea Add-A-Battery. It'll put some charge into your electronics battery when you are running on the big motor.

https://www.bluesea.com/products/765...Kit_-_120A/FAQ

Another option would be the Dakota Lithium 280Ah cranker that could replace your current cranker and dedicated electronics battery.

[haus9393]

I have 2 cranking lithiums. 1 relion hp 100ah and an ionic 125ah in parallel. I can fish 2 days without charging if I needed to. Realistic number of hours for me which is console units on standby when fishing and 3 bow graphs running full time I can usually get 20 ish hours depending on how much I run my outboard. Earlier this season the place I was staying at tripped the breaker after a 12ish hour day of practice. I was down to like 60% on my ionic cranking and I fished another 12 hour day no issue. Very good peace of mind knowing my fishing was not affected by a crap outlet.

[rangerranger]

Thanks. I've had the circuit breaker trip at my boat storage and run into the same problem...

[DQM]

The Blue Seas ACR will not work with Lithium batteries.

Probably best to add another Ionic 125ah in parallel. They are going for a great price right now even without the BBC discount.

There are quite a few people who just run a lithium and AGM in parallel with excellent results as well. Might be worth looking in to.

[22RangerZ520R]

I have two 125ah Ionics parallel for cranking and electronics and three 100ah for the Ultrex. I also have the MK-550 5 bank charger.

Even with my power hungry Apex units I have power for days on one charge.

[Dennis S.]

I have 2 cranking lithiums. 1 relion hp 100ah and an ionic 125ah in parallel. I can fish 2 days without charging if I needed to. Realistic number of hours for me which is console units on standby when fishing and 3 bow graphs running full time I can usually get 20 ish hours depending on how much I run my outboard. Earlier this season the place I was staying at tripped the breaker after a 12ish hour day of practice. I was down to like 60% on my ionic cranking and I fished another 12 hour day no issue. Very good peace of mind knowing my fishing was not affected by a crap outlet.

I also have a Relion 100hp and recently put a Ionic 125 to help. I put a battery selector switch (1/2) and put the newer 125 Ionic as battery 1, the 100hp as battery 2. I honestly haven't put it through the toughest/ longest test, but I feel I could go multiple days without charging them. For the record, I have 2 Humminbird Gen2 Mega units and 2 106sv Garmin units w/ livescope.