Recommendations for graph power

[purduephigam]

Hey all, I am running a helix 10 at the console, 9 at the bow as well as livescope and a hydrowave. Currently I can only go about 5hrs on the water before the cranking battery starts to empty. For whatever reason, I assumed I was running a 27 as my cranking source, but when looking at it, it's a 24. I'm not even sure a 27 is sufficient and being that interstate doesn't produce a 31, I'm left with the decision to go to another brand for a 31, do an Interstate 27, or consider a dedicated battery for electronics. Mind you I am running a small 16' tin so space/weight is a major concern. I'd prefer to just upgrade to a 31 assuming this is safe and can run electronics for 8-10hrs.

[CatFan]

I would definitely go with a 29 or 31.

The Duracell 31 AGM from Sam’s is a good option. It’s on sale for about $160 until March 22.

If you want to go cheaper, the Duralast 29 at Autozone is about $100. Sometimes they have $20 discounts if you order online and pick up in the store.

BTW, the reason you may have trouble finding a 31 at Interstate is because their batteries are made by Johnson Controls. JCI makes a group 29, which is essentially the same as a 31. The Duralast I mentioned above is the same as the Interstate for quite a bit less money. Interstate does advertise an SRM-31, but I’ve never seen one in a store.

[purduephigam]

I'm assuming I should go with the dual purpose as opposed to the deep cycle?

[oldgoat188]

Could look into Lithiums

[purduephigam]

At this point I'm not considering lithiums due to me having to purchase another charger and already very limited on space and weight.

[CatFan]

I'm assuming I should go with the dual purpose as opposed to the deep cycle?

Doesn’t matter as long as the battery has enough CCA for your outboard.

[purduephigam]

It's a Merc 25 4-stroke. About anything out there can start that thing

[catdude28]

The two batteries that Catfan suggested are good choices for you. You are lucky that your cca requirement is very low which a deep cycle battery is fully capable of supplying, yet, at the same time, providing a large RC to run all of your electronics. If your charger is older, or, not AGM compatible, stick with a wet battery like that Autozone/JCI.

[purduephigam]

Thanks for the tips everyone. I will go ahead and pick up a Duracell 31 Deep Cycle as it seems this will be sufficient.