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 > suggest a heated mattress cover

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rvshrinker

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Posted: 11/29/19 09:30am Link  |  Quote  |  Print  |  Notify Moderator

my wife is always cold. we have a true queen in our TT. is there a heated mattress cover that will run on 12v? or do i need to get an inverter to power it off grid?

2oldman

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Posted: 11/29/19 09:34am Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

or do i need to get an inverter to power it off grid?
I've not seen a 12v one nor would I want one, as you should have a 120v outlet near the bed. Make sure it's a pure sine inverter. The controls don't like cheap inverters.

JimK-NY

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Posted: 11/29/19 09:52am Link  |  Quote  |  Print  |  Notify Moderator

A modest 5 amp electric blanket means 50 amps at 12 volts. That would pull down an averaged sized battery to half power every hour of use.

Another option is hot water bottle(s). There are some really reliable heavy duty models available through Amazon. They will put out heat most of the night.

dcmac214

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Posted: 11/29/19 09:54am Link  |  Quote  |  Print  |  Notify Moderator

Not a mattress cover but there are 12V blankets & throws available and they're pretty reasonable. Lay over the top sheet under the blanket/quilt/whatever, turn it on a half hour before going to bed.

NRALIFR

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Posted: 11/29/19 10:01am Link  |  Quote  |  Print  |  Notify Moderator

The only company I’m aware of that makes a 12v mattress pad is Electrowarmth. At one time they made twin and queen sized mattress heaters, but I think they were pushing the limits of the 12v cigarette lighter plug because they discontinued the queen size several years ago. They still make the twin size, and it’s intended to be used in the sleeper bunk of a semi.

I actually have one of their old queen mattress heaters, and it still works very well. However, I cut the plug off the cord and hardwired it to its own CB several years ago because the plug was getting too hot. When we travel in the winter time, I turn it on while we’re on the road to keep the mattress warm. Much nicer than crawling into a freezing bed at night.

If mine ever dies on me, I’ll replace it with a 120v model, and run it from my inverter. Electrowarmth makes 120v models as well, and it might be one of theirs. We have a 120v mattress heater at home, and it works well too. I like them much better than electric blankets. The heat is where I need it at night. Under me, rather than on top.

Mattress heaters and electric blankets are like microwaves now, most all of them have digital controls, and they don’t tend to like cheap, MSW inverters.

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Dutch_12078

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Posted: 11/29/19 10:05am Link  |  Quote  |  Print  |  Notify Moderator

We've been using Electrowarmth heated mattress pads for about 20 years and love them. The queen pad in our motorhome is about 10 years old now, and has worked flawlessly. We have a 120 volt version. Electrowarmth does make 12-volt pads, but they're better suited to the narrow bunks used in truck sleepers, etc.

Electrowarmth.com

Electrowarmth Heated Dual-control Olympic Queen-size Electric Mattress Pad


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2oldman

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Posted: 11/29/19 10:19am Link  |  Quote  |  Print  |  Notify Moderator

JimK-NY wrote:

A modest 5 amp electric blanket means 50 amps at 12 volts. That would pull down an averaged sized battery to half power every hour of use.
My 120v Sunbeam mattress pad is rated 2 halves at 180w each.

That sounds scary, but there are 10 heat settings, and #1 or 2 is all I've ever needed. The heat cycles - it's not on all the time - and overnight it uses very little power.

If you turned this thing up past 3 you'd cook yourself.

* This post was edited 11/29/19 10:26am by 2oldman *

rvshrinker

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Posted: 11/29/19 10:22am Link  |  Quote  |  Print  |  Notify Moderator

the inverter looks like more trouble than I’m willing to go to right now (we don’t have a generator, when we boondock we just don’t use the microwave but can use everything else - lights, USB plugs, etc).

How about a heated blanket that charges on USB? I could charge it in the tow vehicle during the day (while driving), then she could put it in the bed in the evening. Though some days we don’t drive far enough to charge one.

2oldman

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Posted: 11/29/19 10:24am Link  |  Quote  |  Print  |  Notify Moderator

rvshrinker wrote:

the inverter looks like more trouble than I’m willing to go to right now .
It's very little trouble if you plug your shore cord into it. Turn off the converter, bingo, everything works.
rvshrinker wrote:

ow about a heated blanket that charges on USB? I could charge it in the tow vehicle during the day (while driving), then she could put it in the bed in the evening.
USB is what, 5 volts? I wouldn't count on that working too well.

rvshrinker

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Posted: 11/29/19 10:36am Link  |  Quote  |  Print  |  Notify Moderator

Realize the inverter conversation is its own topic, but the shore cord is outside, wouldn't the inverter be inside? How do you connect them?

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