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pianotuna

Regina, SK, Canada

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Posted: 04/12/21 09:45pm Link  |  Quote  |  Print  |  Notify Moderator

If the bank is meeting your needs why replace it?


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

grizz272

frozen tundra, WI

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Posted: 04/12/21 10:27pm Link  |  Quote  |  Print  |  Notify Moderator

I picked the fifthwheel up from the dealer today. They did some work in March and left the battery disconnect on. Well when they brought the camper out the batteries were completely dead. As in no power and not even a light would work.
The dealer plugged the camper in and after about 1/2 hr there was enough power the landing gear would raise the camper up high enough I could hitch up. By the time I arrived home there was a 1/4 charge showing. That is the first time that I know of that the batteries were completely dead. We do boondock and have had the batteries get low before but never dead. They are maintenance free batteries. So I can't check water levels.
I generally try to replace stuff like batteries and tires before they fail.

MNRon

Tennessee

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Posted: 04/13/21 05:28am Link  |  Quote  |  Print  |  Notify Moderator

As others have said, how you care for your batteries has a lot to do with longevity. If you drain them well below 50% SOC, they won't last as long (FLA and AGM). If your charger isn't a 'smart' charger, they won't last as long. If you use regular 'car' batteries, they won't last as long.

You can get good FLA from Sam's or Costco for about $1/AHr (6v GC, had on last 5er), I'd expect those to last 5-6yr+ if treated well. For about $3/AHr you can get Lifeline AGMs (no maintenance hassle, have on current 5er); expect those to last 10+yrs if treated well. Li batteries are lighter and can be discharged further without harm but also have some special charging requirements. I don't have experience with these *yet* but price keeps coming down, and is below $10/AHr now.


Ron & Pat
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RambleOnNW

Pacific Northwest

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Posted: 05/03/21 10:01am Link  |  Quote  |  Print  |  Notify Moderator

I got 9 years out of a pair of Sears DieHard Platinum AGM 12V marine batteries. Now on 2nd year with BatteriesPlus X2Power AGM batteries with 4 year full replacement warranty. Batteries are made by Northstar. I use a 4-stage charger by Progressive Dynamics. Good battery price, they had a $30 mail in rebate per battery plus a 10% online ordering discount.


2006 Jayco 28', E450 6.8L V10, Bilstein HDs,
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Thermoguy

Graham, WA

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Posted: 05/03/21 01:23pm Link  |  Quote  |  Print  |  Notify Moderator

Do you have a meter? Test them - charge them, then check every few days with no load to see if they are depleting. Then if that is good, put a small load on them and check to see if they are depleting too fast. If they are not holding a good charge, you should replace them if you want them to be reliable. You boondock, do you have a generator?

grizz272

frozen tundra, WI

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Posted: 06/21/21 08:14pm Link  |  Quote  |  Print  |  Notify Moderator

I found out what was wrong with my batteries. They had frozen over the winter and the cases were cracked. The one was cracked in 4 places and the other was cracked right where the top and sides came together. This battery would charge up but be dead in about 36 hrs.

I replaced both batteries with deep cycle rv batteries.

pianotuna

Regina, SK, Canada

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Posted: 06/21/21 10:09pm Link  |  Quote  |  Print  |  Notify Moderator

Grizz272,

Sorry to hear of the freeing issue.

My solar keeps my batteries in great shape during the winter.

StirCrazy

Kamloops, BC, Canada

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Posted: 06/22/21 06:35am Link  |  Quote  |  Print  |  Notify Moderator

I just replaced mine that I installed in 2007. to be honest they needed replacing last year but with covid and such there wern't any big trips for me with out power.

That is longer than I expected, but under normal circumstances I would expect to get at least 5 years, but I would also be dissapointed if i only got 5 years if you know what I mean.

if you get a good replacement charger, size your bank properly, and do you water checks frequently there is no reason to not go 5 years min and most likely closer to 10 years on a good quality 6V GC2 battery.

I had four 235AH 6V in my 5th, with 480 watts of solar and my normal depth of discharge was about 30%, befor that they were on my trailer for 10 years and they would see diacharges up to 50% once and a while.

what do I recomend now, if you can aford to spend a bit more up front, and don't have the extreem cold camping habbit, get LiFePo4. the price has come way down in the last year and size and weight wise I could get the same useable AH with about 1/4 the weight and 1/3 the size (aprox) and not have to worry about depth of dischare as they do 3-4000 cycles at 100% discharge. so that would easily last you 20 years cycling them every weekend also because of the 100% discharge capability you dont need to buy way more than you need, just buy enough to cover the normal camping trip plus a few days, or put solar on them.

Steve


2014 F350 6.7 Platinum
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obie311

Aux Arcs

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Posted: 06/22/21 10:18am Link  |  Quote  |  Print  |  Notify Moderator

After the covid downtime both my batteries were gone. I don't know if they were the factory installs or replacements from a previous owner. (coach is a 2014) They were nothing special just group 27 Interstate FLA "marine" batteries.

My price point was around $300. I'm not in the Battleborn league.

I did a lot of research and was leaning toward a pair of Trojan T-105's but ultimately decided I didn't want the maintenance responsibility of checking and replenishing the water levels. (Yes I know they have gadgets to do this)

Ultimately I decided on 2 group 27 Duracell AGM's from Sam's Club (about $325 out the door). I've used East Penn/Deka's in my motorcycle and they have been good but not exceptional like the Panasonic AGM.

Wife does not like to boondock so that influenced my decision to pass on the Trojan GC's. Otherwise I would have gone that way.

We'll see how these do over the winter. I think my solar and converter do a pretty good job of keeping these batts charged and I doubt I will discharge them below 50%. Time will tell.

grizz272

frozen tundra, WI

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Posted: 06/24/21 10:14pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

Grizz272,

Sorry to hear of the freeing issue.

My solar keeps my batteries in great shape during the winter.


I have had a camper with at least one battery since the mid 1990's this is the first time I have had this problem.

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