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Old 04-18-2022, 02:08 PM   #1
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Lead Acid Battery Life

On the average, how long should I expect the lead acid Interstate batteries that came with my 2019 355mbqs to last? When should I be replacing them if they don't just flat out quit?
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Old 04-18-2022, 02:34 PM   #2
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3 years old now...I'd start keeping an eye on them and testing them weekly for their charge.
Our last rig, a class c motor home, had 2, and they generally lasted around 3 to 3 1/2 years. Checked them monthly for water, and kept them on trickle chargers during winter non use.
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Old 04-18-2022, 03:01 PM   #3
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Some people say it depends on where you live.

I say it depends on how good you are about doing maintenance and how you treat it. if you have a tendency to drain the battery below the 50% charge level, you will shorten it's life.

I tend to get about 9 years out of a RV battery. I do run my batteries periodically below the 50% charge level. I do, check the fluid levels periodically and only top off with DISTILLED water.

With good maintenance you can get a decent life out of a battery. Just ignore it, and you will be replacing them every few years. If you need to add water to your battery, ONLY use DISTILLED water, no tap water, no RO water, no bottled water, just Distilled water. Anything else will shorten the battery life.

In the winter months, I pull the battery, and it sits on wood blocks in the heated garage. I check the voltage maybe once or twice over the winter. I tend to only put the trickle charger on the battery in the spring. Even than, it might only be down 0.1 volts.

I know mine are starting to fail when I can smell a bit of a sulfur (rotten eggs).
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Old 04-18-2022, 03:56 PM   #4
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My OEM Excide battery is entering it's 10th year of service. I do the same as member Jagiven, pulling it out in winter and storing in the garage. I have a question though: The battery will hold a sitting charge at or above 12.6V for about 10 days then drops below 12.6V. Mind you, nothing is attached to the battery. After it drops below 12.6V, I put the trickle charger back on and go through this cycle all winter. Is this normal for a battery of this age? Or any age?
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Old 04-18-2022, 04:04 PM   #5
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My OEM Excide battery is entering it's 10th year of service. I do the same as member Jagiven, pulling it out in winter and storing in the garage. I have a question though: The battery will hold a sitting charge at or above 12.6V for about 10 days then drops below 12.6V. Mind you, nothing is attached to the battery. After it drops below 12.6V, I put the trickle charger back on and go through this cycle all winter. Is this normal for a battery of this age? Or any age?
I would say it is typical for this age of battery. Mine once it reach 9.5 years old, started loosing the ability to hold a charge for extended periods.
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Old 04-18-2022, 04:09 PM   #6
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Originally Posted by rkymntsno View Post
snip...... how long should I expect the lead acid Interstate batteries that came with my 2019 355mbqs to last?.......snip
I purchased my (2) Interstate 6V Deep Cycle batteries back in May 2011 for my 2005 Eagle, transferred them over to my present 2018 Jay Flight, and they are still performing well to-date.

As mentioned, the longevity has a lot to do with how well one maintains them. When not in use I always keep a 'BatteryMINDer' charger in-play (remove batteries between trips), and when in use I target a DOD of not less than 70% when boondocking (often). My battery usage also includes winter camping in Texas (escape Michigan).

Bob
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Old 04-18-2022, 04:19 PM   #7
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we have a 2014 whitehawk, original battery plugged in 24/7 unless going down the road. live in Ohio
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Old 04-18-2022, 05:49 PM   #8
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I had a pair of Trojan 6 volt batteries that I replaced after 7 years, but only because they charged up to only 12.4 volts and the sides were bulging out. They still did what I needed them to do, but I didn't have full confidence that they would last much longer. I bought a new pair of the same battery.

Did the same thing with my truck battery. I didn't want to be stranded on the road between Seattle and Quartzsite so I replaced it at 7 or 8 years old.
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Old 04-18-2022, 05:51 PM   #9
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Almost every lead acid battery I have owned for the last ~10 years will last almost exactly 30 days (give or take a few days) past the free replacement period for the battery's warranty. ~CA
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Old 04-18-2022, 06:06 PM   #10
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Thanks for the replies. That's what I was figuring. I don't have any indication they're going bad, was just checking.
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Old 04-30-2022, 10:13 AM   #11
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On the average, how long should I expect the lead acid Interstate batteries to last? When should I be replacing them if they don't just flat out quit?

4-5 years MAX with regularly checking the water levels
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