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-   -   Preventing battery from dying (http://www.airforums.com/forums/f449/preventing-battery-from-dying-169195.html)

DaddysBus 07-02-2017 09:59 PM

Preventing battery from dying
 
My apologies if this is a stupid question or in the wrong forum. We are coming off an Interstate and moving into a 27FB Serenity. The rig will be used around once a month and otherwise stored indoors with just a simple power outlet available.

I was well versed in keeping the batteries fresh in the AI, but not at all sure if I'm supposed to do anything special with the 27FB while it's stored to ensure the batteries don't die.

Thank you in advance for any tips and advice!

alano 07-02-2017 10:45 PM

Not a dumb question. If your converter has been upgraded to a three/four stage battery charger, then you have nothing to worry about. If it hasn't, then be careful to not leave the batteries connected to the converter while on shore power for a month. Better to buy a Battery Tender or upgrade your converter if you intend on keeping your batteries topped up during the month that they're in storage.

OTRA15 07-03-2017 05:36 AM

As an experienced Airstreamer, the best solution might be to glance at the long list of threads in this sub-forum about batteries dying from bad storage practices.

:bb:

Yes your batteries will probably die prematurely if you leave the new trailer for a month without doing something like installing a multi-stage charger as just suggested.

AnnArborBob 07-03-2017 07:08 AM

For your circumstances I (and most others here) highly recommend that you get a new multi stage charger. Progressive Dynamics makes one that is plug compatible with the POS unit that Airstream uses on their new trailers and costs around $300 (plus install if you don't DIY.) It will be the best $300 you ever spend on this hobby.

jamieb1086 07-03-2017 01:04 PM

Hi

I took delivery of my 2016 25' FC April 20 2016. It was sitting on the lot outside here in the northeast from December 2015 until I took delivery and have nothing but trouble with them. They go from a full charge to 9.5 volts in ten days, essentially dead. I never left them connected for more than a few days to shore power.
Last winter I bought 2 NOCO smart chargers and left them in my garage on the trickle until I reinstalled them in April. Even so, this season they barely last the night boondocking with just the refrigerator on propane.
So hopefully my dealer will replace them on warranty later this month so I can care for them properly and maybe get 2 years out of them until I can get my multi stage charger installed. That is the only solution.

:(

OTRA15 07-03-2017 01:20 PM

Quote:

Originally Posted by DaddysBus (Post 1971676)
. . .
Thank you in advance for any tips and advice!

This Battery School material is great reading for general background and advice on RV batteries:

http://www.batteriesnorthwest.com/ba...hool.cfm?TID=0

Happy Trails!

Peter

DaddysBus 07-03-2017 03:07 PM

Awesome. Thank you for the tips. More items added to the shopping list and weekend to do list.

PSU1981 07-04-2017 11:11 AM

I have upgraded to a Progressive Dynamics multi stage charger - so I could leave it plugged into a 120 outlet -- however this would leave my 50 AMP cord exposed for theft at the storage facility. I simply remove the neg terminal connections & battery stays fine.

OTRA15 07-04-2017 02:45 PM

How long do you leave the trailer that way, and what is the battery voltage when you go back?

If the only 120-volt use is the battery charger, you could use a 50' #12 extension cord (or smaller depending on where the outlet is) and adapt to the trailer with this:

https://www.amazon.com/Furrion-FP301...amp+rv+adapter

Still can be stolen but the loss would be less.

Thanks,

Peter

uncle_bob 07-04-2017 03:55 PM

Hi

How old / new is the trailer? There are a surprisingly large number of variations in how these things are wired up between 2018, 2017, and previous years.

Bob

Mollysdad 07-04-2017 04:00 PM

There are things in an RV that can't be turned off (legally). The propane detector and the CO detector. So, even with the power off, the batteries will still be discharging.
Yes, a battery tender is probably the easiest solution, or a master disconnect such as boats have.

DaddysBus 07-04-2017 08:43 PM

Quote:

Originally Posted by uncle_bob (Post 1972466)
Hi

How old / new is the trailer? There are a surprisingly large number of variations in how these things are wired up between 2018, 2017, and previous years.

Bob



It'll be a 2018 International Serenity 27FB. Arriving next week. It'll be stored indoors at a secure space with 120v outlet readily available.

uncle_bob 07-04-2017 09:10 PM

Quote:

Originally Posted by DaddysBus (Post 1972579)
It'll be a 2018 International Serenity 27FB. Arriving next week. It'll be stored indoors at a secure space with 120v outlet readily available.

Hi

So it has (yet another) unique disconnect process for the battery / shore power. Grab a Battery Tender, plug it into the 120V and hook it to the batteries via the connector for the Zamp solar stuff. Put the unit in "store / disconnect" mode whenever it's in storage ...

Bob

Caffeinated 07-04-2017 10:59 PM

I was under the impression that all the new ASs had multi stage smart chargers? Or is it just the Classics?

Mike


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