Do I need a bigger battery?

[Z21PRO]

My current cranking battery is a group 27 Duralast starting battery (autozone battery). 1000MCAwith 182 reserve.

On tournament day I’ll run both livewells on auto and usually just one graph for mapping, which is a helix 12. Halfway through the day when I try to move spots, I’ll be dead, slow to no crank and have to jump it. I also have another helix 12, lowrance live 9 with active target. If I run the active target, like I did today I’ll be lucky to get 2-3 hours before I’m totally dead.

I thought maybe bad battery so I took it back and had it tested. Although it tested fine they still replaced it but I saw no difference. My onboard 4 bank charger seems to be working just fine. No issues whatsoever with my 3 deep cycles, which are the same size/battery.

Thoughts? Thanks in advance.

[Jaredn]

My current cranking battery is a group 27 Duralast starting battery (autozone battery). 1000MCAwith 182 reserve.

On tournament day I’ll run both livewells on auto and usually just one graph for mapping, which is a helix 12. Halfway through the day when I try to move spots, I’ll be dead, slow to no crank and have to jump it. I also have another helix 12, lowrance live 9 with active target. If I run the active target, like I did today I’ll be lucky to get 2-3 hours before I’m totally dead.

I thought maybe bad battery so I took it back and had it tested. Although it tested fine they still replaced it but I saw no difference. My onboard 4 bank charger seems to be working just fine. No issues whatsoever with my 3 deep cycles, which are the same size/battery.

Thoughts? Thanks in advance.

yes. Way too small. I’m guessing you have an Optimax? I had the biggest, baddest, most recommended AGM (X2 31 series) and it was barely adequate at best for me. Went to a 125ah lithium…wow

[Z21PRO]

yes. Way too small. I’m guessing you have an Optimax? I had the biggest, baddest, most recommended AGM (X2 31 series) and it was barely adequate at best for me. Went to a 125ah lithium…wow

Yes, 250 optimax. Would this be a good replacement or still not enough? https://www.batteriesplus.com/produc...p-31m/sli31mdp

[catdude28]

Yes, 250 optimax. Would this be a good replacement or still not enough? https://www.batteriesplus.com/produc...p-31m/sli31mdp

Still way too small

[BarryFL]

This one... https://www.batteriesplus.com/produc...lt/sli31agmdpm

[Z21PRO]

This one... https://www.batteriesplus.com/produc...lt/sli31agmdpm

After lots of research this definitely seemed like the right battery to get. Just put it in, will test out this weekend. My wallet is a lot lighter.

[BarryFL]

I will be going to dual purpose lithium once my Merc warranty expires. Price difference is closing thankfully.

[billnorman1]

There ya go. Cubic dollar$ cure everything.

[Tom B]

get this one - its a beast

https://www.napaonline.com/en/p/BAT7...pressionRank=1

[krindgen]

You have an upgrade harness? It'll help.