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Old 02-10-2020, 02:28 PM   #1
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Lithium batteries inside

Anyone mount them inside under twin bed?
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Old 02-10-2020, 03:26 PM   #2
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i moved to lion and moved them under the bed in my As 22fb
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Old 02-10-2020, 10:04 PM   #3
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In my way of thinking thatís the perfect location. It gets weight off the tongue and keeps them warmer. They canít charge below 32 degrees. Hereís my setup. This is fancier than you might be thinking of as it has 500ah of lithium, solar and a hybrid Victron 3000 inverter.
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Old 02-10-2020, 10:31 PM   #4
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Thanks for the pix. This is under one of the twin beds?
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Old 02-10-2020, 11:44 PM   #5
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Quote:
Originally Posted by Garfish View Post
Thanks for the pix. This is under one of the twin beds?
Yep, all five of them fit perfectly under the curb side twin of a front bed FC25. That’s handy as well because it’s where the wiring culminates in the infamous rats nest at the head of that bed. That’s where the battery wires from the tongue battery box used to go.
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Old 02-11-2020, 08:54 AM   #6
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Very nice clean setup.








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Originally Posted by daleyocum View Post
In my way of thinking thatís the perfect location. It gets weight off the tongue and keeps them warmer. They canít charge below 32 degrees. Hereís my setup. This is fancier than you might be thinking of as it has 500ah of lithium, solar and a hybrid Victron 3000 inverter.
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Old 02-11-2020, 10:03 AM   #7
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My two Lifepos are under our queen. (and under me too, of course).

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Old 02-11-2020, 10:38 AM   #8
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Possible dumb question. When the batteries are relocated to under either twin, is there a problem (too much weight) resulting with the AS listing to one side or the other?
Thanks
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Old 02-11-2020, 11:12 AM   #9
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I'm assuming the box sitting in the outside storage compartment is the Victron 3000. I'm seeing only 3 Battleborn Lion Batteries. Those 3 add up to 500 Amp Hours? And I like the battery cutoff you installed!

Was this a do it yourself design or kit or pro install?

Thanks!
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Old 02-11-2020, 12:54 PM   #10
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Looks VERY smart. Are the other two batteries set end-end behind the visible three? Or am I missing something...

And I feel your appreciation of moving weight off the tongue. Our two 6 volts at the effective end of the significant arm described by the distance between the front axle and the coupler is unwelcome.
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Old 02-11-2020, 09:21 PM   #11
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Originally Posted by Rrys View Post
I'm assuming the box sitting in the outside storage compartment is the Victron 3000. I'm seeing only 3 Battleborn Lion Batteries. Those 3 add up to 500 Amp Hours? And I like the battery cutoff you installed!

Was this a do it yourself design or kit or pro install?

Thanks!
That’s an older picture when I just had 300ah. I’ve since taken over the smaller cabinet next to it for two more. In the cloudy PNW, 300ah wasn’t quite enough as we use a lot of power with induction cooktop, tea kettle, TV, hair driers, etc. There’s 500w of solar on the roof and another 100w on a portable panel I can move around.

Yes, the blue box in the outside storage compartment is the Victron hybrid inverter/converter/charger. I took out the converter and transfer switch that came with the trailer so the Victron does all of the power management and talks with the Victron Solar controller and battery monitor.

Because of the Victron, I set it up so the rest of the trailer just thinks it’s plugged into shore power. That means all the outlets are live all the time. You just have to keep the overall load under the 3000w the Victron can supply.

I did this myself (I’m an electrical engineer). AMSolar has kits and superb support for those interested. I, however, pieced this install together myself from various sources to save a few bucks.

To answer the question of too much weight on one side, I haven’t noticed any problems. Lithium batteries are about half the weight of lead acid or AGM, about 31 lbs each. They are only about 18” off the centerline of the trailer so that helps. Lithium also means you can mount them inside (no outgassing) and at any orientation, something I couldn’t do with lead acid.
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