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 > 12 volt blanket?

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cummins2014

Utah

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Posted: 11/13/20 01:19pm Link  |  Quote  |  Print  |  Notify Moderator

dedmiston wrote:

naturist wrote:

Let’s do some simple math. Taking that 4.5 amp draw, over an 8 hour snooze, we get 36 amp hours per night. At 6.5 amps, that’s 52 amp hours per night. If you have the single 80 amp hour battery most TTS come with, that blanket will completely drain as much power as you dare or even damage the battery. You need to check you battery AH rating before deciding.


Let's do some simple reading. [emoticon]

mtnbbud wrote:

I have two 6 volt Trojan T105 batteries. 225ah.



When are they going to add the like button [emoticon]

2oldman

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Posted: 11/13/20 02:14pm Link  |  Quote  |  Print  |  Notify Moderator

mattress heater, inverter

corvettekent

Marysville, WA

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Posted: 11/13/20 05:42pm Link  |  Quote  |  Print  |  Notify Moderator

We use a 120 volt mattress pad and a PSW inverter. Works great for us but we have four 6 volt batteries.


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mtnbbud

Oregon Willamette Valley

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Posted: 11/13/20 06:33pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the replies. Even if my wife doesn't use it much, it could be a fun gift for her. (I have a tough time finding fun Christmas presents for her.) If I got one with a automatic shut off, we shouldn't need to worry about running down the battery too much.

I do have a small 400 watt inverter I could plug into the outlet I added to my trailer. I included a 15 amp fuse in my wiring, but the wiring I used was a bit thin as I only put it in to charge phones and tablets. Do you guys think a 120 volt AC blanket would draw too many amps? Would I need to replace the wiring on my DC plug to something thicker?

I'm thinking a blanket as she could wrap it around her as she's reading or lounging as much as for sleeping. She's a little more cold blooded than me and we've been avoiding using our furnace as it needs to be replaced.
(I have a Little Buddy Heater I use to taker the chill off before turning in or when waking up.)

Along with the typical 12 volt blankets, I've found there's a new one out there that's being marketed for backpacking that will run off a portable power pack or USB. Supposedly it run for 8 hours on low using a 10000 amp bank. I can't imagine it getting very warm, but the ability to pack it along when away from the RV is pretty neat. It's too new to have any reviews yet though...

ppine

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Posted: 11/14/20 08:45am Link  |  Quote  |  Print  |  Notify Moderator

Much like an electric knife.
Buy some good down bags or quilts.

2oldman

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Posted: 11/14/20 08:46am Link  |  Quote  |  Print  |  Notify Moderator

mtnbbud wrote:

Supposedly it run for 8 hours on low using a 10000 amp bank.
I think you're missing a decimal point.

NRALIFR

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Posted: 11/14/20 09:20am Link  |  Quote  |  Print  |  Notify Moderator

The weak point on any 12v heated blanket or mattress pad is the plug. I haven’t found one yet that holds up over the long term without getting too hot. We have one of the old Electrowarmth brand queen size 12v mattress heaters, and after trying 3-4 different style plugs on it, I finally hard-wired it to its own resettable CB. A small pad or blanket might be ok.

The Electrowarmth pad itself is great, and I like the old style analog control with no shutoff, but I think they were pushing the amperage limits of the 12v cigar lighter plug with that size pad. That’s probably why they don’t make a queen size any longer.

[emoticon][emoticon]


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garyhaupt

Penticton, BC..land of wine, sun, retirees....

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Posted: 11/14/20 09:36am Link  |  Quote  |  Print  |  Notify Moderator

We camp in very low temps, often..minus 15. We have a very cheap, very warm man made fibre, sleeping bag that opens up to cover the bed..and we use that. I am a power miser and don't want to wake up to low batteries.

Gary Haupt


I have a Blog..about stuff, some of which is RV'ing.

http://mrgwh.blogspot.ca/

mtnbbud

Oregon Willamette Valley

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Posted: 11/14/20 11:15am Link  |  Quote  |  Print  |  Notify Moderator

2oldman wrote:

mtnbbud wrote:

Supposedly it run for 8 hours on low using a 10000 amp bank.
I think you're missing a decimal point.


Yep - missing an m. Should be 10000mah.

Good info everyone. Thanks for your advice.

JimK-NY

NY

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Posted: 11/14/20 04:11pm Link  |  Quote  |  Print  |  Notify Moderator

If you want an electric blanket odds are you are going to be also running the furnace and you might want to conserve as much power as possible.

Instead of electric heating, I found extra large, very sturdy hot water bottles. They are designed to be filled with very hot water and have a knit bag to retain the heat and release it slowly over a period of many hours. It is warm enough that I turn the furnace off at night at least when the outside temps are freezing or higher.

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