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Old 02-17-2021, 09:46 AM   #1
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2021 23' Globetrotter
Brownsville , Vermont
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Lead acid to lithium

I have a 2020 Globetrotter with two lead acid batteries installed. I have purchased two Battle Bold 100 ah lithium batteries to replace the lead acid. Is there anything I need to do regarding the existing electrical when I drop them in? Would an aftermarket battery monitor make sense to be able to see the level of charge?
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Old 02-17-2021, 09:50 AM   #2
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Make sure your converter can handle lithium. You will have to let your converter know it is now handling lithium by changing the setting.
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Old 02-17-2021, 09:54 AM   #3
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Victron energy has the best products for lion, solar etc.

even AS HQ is now using their products on new AS trailers being delivered
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Old 02-18-2021, 10:52 AM   #4
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Thank you. I will look into the right converter for the job.
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Old 02-18-2021, 11:15 AM   #5
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You need all lithium compatible components. Inverter/Charger, DC to DC charger between your engine battery/alternator, Battery Monitor, and solar controller.
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Old 02-18-2021, 04:16 PM   #6
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Thank you. No one has told me that. I appreciate the advice.
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Old 02-18-2021, 04:41 PM   #7
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Did you get the Battle Borns with the Heated Kit? LifePO4 do not like low temperatures (i.e. heated kit for many of the outside installations/applications).
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Old 02-18-2021, 05:09 PM   #8
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Quote:
Originally Posted by Rklene View Post
Thank you. No one has told me that. I appreciate the advice.

They will tell you they are drop-in replacements and will even suggest charge settings for certain lead-acid chargers they claim will work. Technically they will, but when pressed, they recommend lithium specific charging components and profiles.

The bottom-line is, if you want your expensive batteries to last their longest and work their best, they need lithium-specific charging. Plus, the DC to DC charger (between your engine battery/alternator and Battleborns) will save your alternator from possible destruction. This is due to the fact that your lithiums may pull much higher charging rates than your alternator was designed to provide.

I don't mention this to discourage you. I was in your shoes 2 years ago and my head hurt due to a steep learning curve. But with help on this and another forum, I was able to do the install myself with no sparks or flames.


PS. - I live in deep South Texas, travel in mild weather, and installed the Renogy batteries inside my class b. So, until this week, I never had to worry about low temperatures. In Vermont, you'll want some way to keep the batteries above zero and ideally about 32 degrees if you want to charge or use them.
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Old 02-18-2021, 06:46 PM   #9
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All good and very important advice above.

Like Vermont, Colorado has a long and cold winters. To protect our lithium from deep cold we simply remove it from the trailer and store it in the house off season. They have very low self discharge rates and should not require any charging maintenance.
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Old 02-18-2021, 08:18 PM   #10
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Originally Posted by field & stream View Post
All good and very important advice above.

Like Vermont, Colorado has a long and cold winters. To protect our lithium from deep cold we simply remove it from the trailer and store it in the house off season. They have very low self discharge rates and should not require any charging maintenance.

I purchased 1/0 cables with Anderson connectors. Not to remove the batteries for cold weather, but because the Renogy battery bolts are crap. But it would make for an easy, tool-less disconnect. Purchased them from these guys

https://www.ebay.com/itm/Anderson-SB...72.m2749.l2649

Good prices, wide variety, custom by-the-foot lengths, and high quality.
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Old 02-19-2021, 12:00 PM   #11
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I just ordered all the parts. Here is the full manual that Airstream shared with dealerships. Basically the heated GC2 battery is only available to dealerships (which is a joke) and it is the only one that fits into the newer battery boxes. However the one you buy directly from BB just requires you to shave the handles off the batteries (BB technician told me that) and they will fit right into the box. I bought two in a bundle for $2,098 including tax and shipping. Around $1k cheaper than buying them through Airstream.

You then need a new converter ($163 on CampID) and I bought the Victron 712 monitor (Amazon Prime) to replace the one thatís below the TV right now.

See all Information attached.
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File Type: pdf Airstream Lithium upgrade_.pdf (3.06 MB, 15 views)
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Old 02-19-2021, 12:14 PM   #12
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SO I have a question.....

My AS has no solar. I'm not yet at the point of going lithium, but I can see doing so in a few years. But, I'd like to start w/ a suitcase solar setup for now, add rooftop solar later, then go lithium.

What I don't want to do is buy a suitcase setup that isn't compatible w/ the end result once I do have rooftop solar and lithium. If my AS was a year newer, I know there'd be a Zamp box on the roof and a port beside the battery box for a portable, but as mine currently is, I don't have that port (mine is prewired for solar, but predating the Zamp box, I'm not sure what the rooftop connections will look like).

And, if need be, I'd be okay w/ buying a new converter first, as long as it could still handle my current batteries for now (ie, have the controller bought and in-place before I get to the lithium install down the road....).

Thoughts on what suitcase solar might be a better choice for being useful upfront but still usable down the road?
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Old 02-19-2021, 12:52 PM   #13
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Quote:
Originally Posted by LNBright View Post
SO I have a question.....

My AS has no solar. I'm not yet at the point of going lithium, but I can see doing so in a few years. But, I'd like to start w/ a suitcase solar setup for now, add rooftop solar later, then go lithium.

What I don't want to do is buy a suitcase setup that isn't compatible w/ the end result once I do have rooftop solar and lithium. If my AS was a year newer, I know there'd be a Zamp box on the roof and a port beside the battery box for a portable, but as mine currently is, I don't have that port (mine is prewired for solar, but predating the Zamp box, I'm not sure what the rooftop connections will look like).

And, if need be, I'd be okay w/ buying a new converter first, as long as it could still handle my current batteries for now (ie, have the controller bought and in-place before I get to the lithium install down the road....).

Thoughts on what suitcase solar might be a better choice for being useful upfront but still usable down the road?
Many suitcase units aren’t optimized for Lithium. I happen to know this new one from Renogy is. Just look carefully at the specs to confirm before you buy.
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Old 02-19-2021, 01:13 PM   #14
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Quote:
Originally Posted by Rklene View Post
I have a 2020 Globetrotter with two lead acid batteries installed. I have purchased two Battle Bold 100 ah lithium batteries to replace the lead acid. Is there anything I need to do regarding the existing electrical when I drop them in? Would an aftermarket battery monitor make sense to be able to see the level of charge?
I recently watched this video (https://www.airstream.com/ask-an-air...power-systems/) and found it to be educational. You may as well.
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Old 02-19-2021, 01:24 PM   #15
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Quote:
Originally Posted by LNBright View Post
SO I have a question.....

My AS has no solar. I'm not yet at the point of going lithium, but I can see doing so in a few years. But, I'd like to start w/ a suitcase solar setup for now, add rooftop solar later, then go lithium.

What I don't want to do is buy a suitcase setup that isn't compatible w/ the end result once I do have rooftop solar and lithium. If my AS was a year newer, I know there'd be a Zamp box on the roof and a port beside the battery box for a portable, but as mine currently is, I don't have that port (mine is prewired for solar, but predating the Zamp box, I'm not sure what the rooftop connections will look like).

And, if need be, I'd be okay w/ buying a new converter first, as long as it could still handle my current batteries for now (ie, have the controller bought and in-place before I get to the lithium install down the road....).

Thoughts on what suitcase solar might be a better choice for being useful upfront but still usable down the road?

Lithium lasts longer and charges quicker than lead-acid. You may find solar to be of little value unless you have much more than a suitcase unit. I'd suggest you wait to see if you need solar at all, or go with a massive 400W+ array on your roof.
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Old 02-19-2021, 01:53 PM   #16
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Quote:
Originally Posted by rowiebowie View Post
Lithium lasts longer and charges quicker than lead-acid. You may find solar to be of little value unless you have much more than a suitcase unit. I'd suggest you wait to see if you need solar at all, or go with a massive 400W+ array on your roof.
I think mine, given size (a 20FC), might be capped at closer to 300w. I'm not picturing us running the AC, I just want to keep the batteries topped off over a couple of days as we run the lights, etc.
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Old 02-19-2021, 01:54 PM   #17
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Originally Posted by daleyocum View Post
Many suitcase units arenít optimized for Lithium. I happen to know this new one from Renogy is. Just look carefully at the specs to confirm before you buy.
That link just took me to a controller.... but poking through their site, there are several different suitcase setups...
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Old 02-19-2021, 03:37 PM   #18
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portable solar (Zamp) off Amazon

I got a 140w portable system (Zamp), complete with controller and about 15' of cable that can connect directly to the battery terminals. In my case it is a supplement to the 3 fixed mount rooftop panels I have, the portable allows me the highest probability to get something in direct sunlight, and optimize the absorption by manipulating the panel angle. I got mine off Amazon, that makes it a very simple process. It works with all popular battery types (wet cell, AGM, Lithium).

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It's a great way to start the investagion of the value proposition for you, the panels are just a little bulky and heavy but they fold up against each other, and come in a protective case to encapsulate them, I store them in my 1 larger vertical closet when not in use. Mine cost me a little over $600, it looks like the Renogy system mentioned in the prior post is more cost effective for the size. You could get 2 of the Renogy, and have more watts, at less cost than I paid ...
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Old 02-19-2021, 04:36 PM   #19
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This is our schematic for solar and lion

we can also monitor it from web or phone
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Old 02-19-2021, 04:48 PM   #20
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Originally Posted by 1StreamDream View Post
it looks like the Renogy system mentioned in the prior post is more cost effective for the size. You could get 2 of the Renogy, and have more watts, at less cost than I paid ...
Iíll confess, looking at what comes up on Amazon, thereís some there by Dokio (from China) that is close to the Ďtry it and if it doesnít work out, no great lossí point....
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