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Old 03-23-2020, 02:10 PM   #1
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Battery Disconnect

I always take out my 12v battery when not using my TT. Do I need a battery disconnect switch?
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Old 03-23-2020, 02:24 PM   #2
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I installed one just to simplify things and to totally eliminate small amp draws I could not turn off(ie the led light on the radio).
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Old 03-23-2020, 02:24 PM   #3
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I always take out my 12v battery when not using my TT. Do I need a battery disconnect switch?
Mike
Not if you take out your battery. If you put in a cutoff that cuts off 100%, then you don't have to take out your battery. Your preference.
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Old 03-23-2020, 02:47 PM   #4
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Not if you take out your battery. If you put in a cutoff that cuts off 100%, then you don't have to take out your battery. Your preference.
I know it's hard to say but how long would the 24 group battery stay charged??
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Old 03-23-2020, 02:50 PM   #5
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I know it's hard to say but how long would the 24 group battery stay charged??
Mike
Yep, impossible to say. I'm assuming you are asking about battery life while boondocking. If using your onboard propane heater, one battery will not usually get you through the night. Otherwise, you might get a few days.
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Old 03-23-2020, 02:58 PM   #6
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Yep, impossible to say. I'm assuming you are asking about battery life while boondocking. If using your onboard propane heater, one battery will not usually get you through the night. Otherwise, you might get a few days.
No I meant how long might it stay charged while in storage???
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Old 03-23-2020, 03:25 PM   #7
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No I meant how long might it stay charged while in storage???
Mike
Ah. Before we retired, I would use the disconnect (100% cut off) and the battery would still be charged at least greater than 85% to 90% 3 to 4 months later. Assuming it was 100% to begin with. And that was in the SW heat.
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Old 04-17-2020, 02:28 PM   #8
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I just installed a disconnect on my trailer only to kill power between trips but ill still pull my batteries in the off season and store em in the basement (on wood blocks) with a float on them. Its all really up to you.... There's no bad answer. I never had one in my last 2 trailers and only decided to put one on my new one was because we are on Covid lockdown.... Lol
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I always take out my 12v battery when not using my TT. Do I need a battery disconnect switch?
Mike
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Old 04-17-2020, 02:42 PM   #9
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I just installed a disconnect on my trailer only to kill power between trips but ill still pull my batteries in the off season and store em in the basement (on wood blocks) with a float on them. Its all really up to you.... There's no bad answer. I never had one in my last 2 trailers and only decided to put one on my new one was because we are on Covid lockdown.... Lol
Why on wood blocks?
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Old 04-17-2020, 03:03 PM   #10
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Why on wood blocks?
Old school leftover practice. Hasn't been necessary for decades.
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Old 04-17-2020, 03:19 PM   #11
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Old school leftover practice. Hasn't been necessary for decades.
Yep, I have the same discussion with my brother almost yearly. But it doesn't hurt anything to store them in a wood pallet. But it doesn't help anything either. I found this article interesting on the subject: https://www.mcgill.ca/oss/article/ge...tored-concrete
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Old 04-17-2020, 03:26 PM   #12
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Why on wood blocks?
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Old school leftover practice. Hasn't been necessary for decades.
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Yep, I have the same discussion with my brother almost yearly. But it doesn't hurt anything to store them in a wood pallet. But it doesn't help anything either. I found this article interesting on the subject: https://www.mcgill.ca/oss/article/ge...tored-concrete
I know... I was trying to determine why the poster believed they needed to.
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Old 04-17-2020, 03:27 PM   #13
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I was always told to never store on cold floors.... Wrecks em or something. Thats my personal, long time preference so if anyone has a quabble about it start ur own post.... Lol
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Why on wood blocks?
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Old 04-17-2020, 03:40 PM   #14
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I know... I was trying to determine why the poster believed they needed to.
I figured as much, I just couldn't help sharing this yearly discussion I have with my brother. And now I can show him these posts, just so he can make that screwed up face he makes
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Old 04-17-2020, 03:40 PM   #15
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I was always told to never store on cold floors.... Wrecks em or something. Thats my personal, long time preference so if anyone has a quabble about it start ur own post.... Lol
The only reason that it could possibly be is to prevent stratification which would only be a problem if you never charged them and the floor would have to be REALLY cold. Putting a charge on them gets rid of stratification.

I have 3 batteries from my boats sitting on concrete floors as we speak and not charging them. Not an issue.
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Old 04-17-2020, 05:02 PM   #16
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Yeah thats what it was.... So it is a thing in case someone out there stores their battery on a very cold WI basement floor with no charger on it.
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The only reason that it could possibly be is to prevent stratification which would only be a problem if you never charged them and the floor would have to be REALLY cold. Putting a charge on them gets rid of stratification.

I have 3 batteries from my boats sitting on concrete floors as we speak and not charging them. Not an issue.
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Old 04-17-2020, 05:17 PM   #17
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I always take out my 12v battery when not using my TT. Do I need a battery disconnect switch?
Mike
Do you need a disconnect switch...... No..... But it is not a bad idea.


As far as batteries on concrete, for me it more of a habit to put them on a block of wood (easier for me to slide over and pick it up (For the batteries that do not have handles) and I do not always do it.

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Old 04-17-2020, 05:23 PM   #18
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Yeah thats what it was.... So it is a thing in case someone out there stores their battery on a very cold WI basement floor with no charger on it.
Or...just charge it up and leave it on the trailer. Unless you get temps down to -80F, a fully charged battery won't freeze.

The basement isn't heated? If it's heated no issue on the floor.

Personally, I always keep my batteries charged up throughout the winter for my two boats. My travel trailer is lithium so it never gets moved. The boat batteries are only removed from the boat for security reasons.
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Old 04-17-2020, 06:11 PM   #19
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No, you don't need a disconnect. I put in a disconnect on my A-frames so that I can isolate the batteries whenever desired. I also installed a voltmeter by the door so I can monitor the converter or battery voltages.

I leave the batteries installed - the only time they come out is for replacement. Upon return from a trip, I leave the camper plugged in for about a week. I then unplug, and disconnect the batteries with the disconnect switch until a couple of days before the next trip (A-frame stores in the unheated garage, which never gets below freezing for any length of time). If I need to do maintenance or an improvement, I reconnect the batteries (plug in if I need AC).

I plug in and turn on the fridge to pre-cool at least the night before a trip; usually 2 nights before. We try to go on a trip at least every 2 months, and monthly when weather and DW health suits.

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Old 04-17-2020, 11:14 PM   #20
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No I meant how long might it stay charged while in storage???
Mike
I installed a disconnect. It was VERY easy and cheap. I did it because we camp a lot, but if I left the camper parked (unplugged) for more than a week or so between trips, the parasitic drain of things like stereo clocks would deplete the battery.

To answer your question... I parked my camper in storage last October. It was indoors, but unheated. Michigan winters are cold. I picked it up last weekend and it was like I had just charged the battery. It lifted the camper, lowered it. and lifted it again while connected to the truck before I connected it to the TV. I highly recommend it.
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