Quote:
Originally Posted by JoeDS
The optima battery are re-portability more durable although not everyone finds that to be true. Their AMP Hour rating is considerably less than many of the larger wet-cell batteries although their are a lot of variables in methods of that rating.
Info from their website
https://www.optimabatteries.com/en-u...e-and-starting
Model: D34M
Weight: 43.5 lb
C20 Capacity:55 Ah
Post Type: dual SAE & 5/16 Stainless Stud
CCA:750 Amp
Width:6.88 in
Length:10.06 in
Height:7.94 in
A note about AGM batteries. No magic there. They are a lead acid battery but using a different construction technology. Here is a good article about them. Lead content is the key ingredient. Note the difference in weight between the two types. That will give you an idea. They excel in several ways but not all.
https://www.solar-electric.com/learn...echnology.html
Personally if you are going to spend $500 on 2 of them you might want to investigate Lithium battery technology. Many high end RVs are going that route. |
I had to Google
"re-portability" and I am ashamed to say, I still don't think I am clear on what it means
Whatever it is; not sure I have had to do it with my existing batteries?
The 55aH is the deal breaker for me, I know Optima are top quality batteries but capacity is one of main reasons for house batteries. I had a boat that came with 2 of the Optimas, I believe they were the Red tops and they were GREAT never an issue, but they were used mainly for starting, one was a backup. I never worried about running extended periods of time off my batteries while on the boat. My new boat has 2 Interstates but with the disconnect switches and I love it. No corrosion no mess.
These optimas are about 12 lbs lighter than my existing NAPAs Group 31 on RV, and the Group 29 Everstart is about 2 lbs lighter. Even so no way I pay $500 plus for the Optimum. If I was going to spend $400 and up, I would actually consider the 6VC batteries.
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