AGM Battery Feedback
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LaurencetheAdventurer
Well-Known Member
I put two of these on my Benny this last summer, and two in my RV about 4 years ago - no issues at all (I had a 140amp version, now they are 165amp and have some cool new features). https://www.litime.com/products/12v-165ah-dual-purpose-marine-lithium-battery. More power, about the same cost, and a well regarded brand.
LaurencetheAdventurer
Well-Known Member
Mercury released a bulletin a few years back, allowing LifePo4, with the right marine cracking amps, which this complies with. I was never able to find the actual bulletin, but did locate the attached. I ultimately did get an email from Mercury that verified this, but can't seem to put my finger on that currently.
babock
Active Member
The X2Power batteries are basically the same as Odyssey since they are both built by EnerSys. Best AGM battery you can buy.
I would never use a lithium battery or hybrid version in a marine environment unless you have a way to charge it through a DC to DC converter. These hybrid batteries are supposed to limit charge current but there is no way I would use one with my 150HP 2025 Mercury ProXS since it only has a 60A alternator. Running at a 100% duty cycle for long periods of time will damage the alternator.
I would never use a lithium battery or hybrid version in a marine environment unless you have a way to charge it through a DC to DC converter. These hybrid batteries are supposed to limit charge current but there is no way I would use one with my 150HP 2025 Mercury ProXS since it only has a 60A alternator. Running at a 100% duty cycle for long periods of time will damage the alternator.
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Nautical
Well-Known Member
I just went through this with my F‑150 PowerBoost pickup and almost went down that same needlessly expensive Odyssey/X2 path too. After digging into it, I ended up buying the Duracell Ultra (sometimes labeled Ultra Platinum) AGM for less than half that price above. Both the X2 Power and the Duracell AGM are made by East Penn, a high‑quality manufacturer that doesn’t really produce “tiers” of AGM internals for private‑label brands. The only meaningful difference between them is the warranty period.
babock
Active Member
No...x2Power is made by Enersys
Nautical
Well-Known Member
I stand corrected ... or I should say Ai stands corrected. A deeper dive backs up what you're saying. However, I stand by the theme of my post in that Duracell, which is made by East Penn, is close enough (or even equal) in quality to be the much better choice (unless you want to pay double for the longer warranty).
JohnnyRay
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For the money, just go to Walmart and purchase an EverStart AGM Marine battery. Less than $200 and made by Clarios (formerly Johnson Controls). It's the same top quality battery that you would buy anywhere else - at one of the most competitive prices you will find. And, Walmart stands behind their warranty without issue...
babock
Active Member
I just returned a less than one year old Neverstart AGM battery and I have a second that is also failing. Never again!
babock
Active Member
I have used both Odyssey and the Duracells in boats. The Odyssey lasted over 8 years. My Duracells are currently at 5 and going to replace this year.
When I replaced my F-150 battery, I went with Odyssey.
babock
Active Member
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Potomacbassin’
Well-Known Member
I'm still rocking lead acid, never had an issue over 5 years and just replaced as a preventative measure.
Keeps it simple and puts more beer money in the jar.
Keeps it simple and puts more beer money in the jar.
JohnnyRay
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Me, too! I'm having great service results out of the OEM Continental batteries in our 2019 22SSX. I alternate use between batteries periodically in order to cycle them. And I top off with distilled water annually and store on CTEKs. I'm a big believer in battery maintainers for enhanced longevity...
Potomacbassin’
Well-Known Member
Yep maintenance (as always) is key. AGM's and lithiums have their place, but the question is whether the premium cost is worth it. For starting - I feel strongly NO. For a house battery or for use with electronics or other high-draw items like a trolling motor, it's a maybe. One big lithium can often outlast several lead acid batts so space and weight considerations start changing the calculus. And some of the lithiums have cool features that make ownership easier like apps for charge state.
But for our floating family rooms the old fashioned stuff works pretty darn well for the price.
JohnnyRay
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I prefer AGMs for my classic cars...
Potomacbassin’
Well-Known Member
Yep I've got one in my old beater Sequoia. I rarely drive it so AGM seems withstand those idle discharges better.
BulldogsCadillac
Just some guy
Well I was a huge believer in Northstar batteries, did a lot of research back when I was buying/building my boat. There are different types of AGM's. Northstar and Odyssey use TPPL (Thin Plate Pure Lead) designs, which allows them to be discharged 80% (which would kill most batteries) and be recharged completely. I guess in 2019 Odyssey bought the Northstar brand, but Northstar is still being built in its same facility as previous, just now I guess they sent them Odyssey stickers to put on them. I had 4 of them on my boat, 1 for starting/house (except anything to do with stereo) and 3 group 31's that were dedicated to stereo with a standalone Pronautic shore charger. Loved them, damn heavy though! Haha
LaurencetheAdventurer
Well-Known Member
Found the Email from Mercury - attached - approving Lithium for my Merc 350V. Some new information - several audio vendors suggested adding an Orion OS DC to DC charger, to protect the Merc Alternator from overheating in my Hot Desert Lake temps (105 to 120) as a result of LifePo pulling the max power to recharge.