What house batteries are you running?

S

Serendipity Cutwater 28

New member
Joined
Nov 23, 2025
Messages
3
Fluid Motion Model
C-28
Vessel Name
Serendipity
My AGM house batteries need to be replaced. Purchased 2023. What brand and amp hour are you running?
 
They shouldn't need to be replaced. Do a draw down. I run mine 7 years with no problem
 
rheimb1 said:
They shouldn't need to be replaced. Do a draw down. I run mine 7 years with no problem
Click to expand...

My factory AGM batteries lasted 90 days before I sulfated and destroyed them. Everybody boats differently.
My hats off to you for getting 7 years out of a set of AGM batteries. My second set of AGM batteries lasted a little over a year. Then I converted my boat to LFP.
 
Last edited:
I've got three 105ah Duracell brand AGM from Batteries Plus. Had them for a year and been happy with them. The 3rd house battery makes a big difference.
 
+1 on the Duracells.
 
+2 on the Duracell's. 4 110 AH AGM Duracell Marine/RV Platinum's, and same batteries for one Start and one Thrust on the Stbd side. $2K all in. I also added 2 Renogy Flex panels on top of my Bimini, with a Renogy Rover 40 Amp Controller with Bluetooth for solar.
 
After 3 years, I switched to Lithium, EPOCH 460, some moderate system changes with the charging, but well worth it. Not only in weight, but performance.
 
Submariner said:
My factory AGM batteries lasted 90 days before I sulfated and destroyed them. Everybody boats differently.
My hats off to you for getting 7 years out of a set of AGM batteries. My second set of AGM batteries lasted a little over a year. Then I converted my boat to LFP.
Click to expand...
Lifeline.
 
im still using the factory universal AGM's. they are very good value and are pretty easy to find at either home depot or amazon delivered which is a big plus. im on my 3rd set. The key was switching the start battery to an X2 with more CCA as the universals suck for CCA
 
My batteries were going on 7 years old, so I changed them all. For the Engines/Genset/Thrusters, I used 3 Lifeline Group 31 Starter Batteries. I was less concerned with the 4 house batteries and replaced with lower cost Universal Group 31 AGM, similar to the originals.
 
Thank you all that replied. I ended up going with the Duracells and they are great. One of the issues I was having was that my Garmin gpsmap 7212 was not firing up with the house battery. As soon as I replaced the batteries, it fired right up and works great. Other than the lower voltage of the house and crossover batteries (the ones that I replaced), the terminal connector was also pretty loose. New connectors and we're off to the races. I appreciate the replies.
 
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