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Old 12-10-2018, 01:49 PM   #1
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Isata 5 36DS Lithium Upgrade

Has anyone completed an upgrade to replace the stock AGMs with Lithium Batteries? I haven't received my I5 yet, it's due in February, but l want to upgrade to lithium right away. I'm looking for a basic wiring diagram of the new I5 (including solar panels) so I can begin contacting someone like BattleBorn to see what new equipment I need to order and what wiring changes I need to make. My vision is to install five or six 100 ah batteries. Any help would be appreciated!
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Old 12-12-2018, 08:00 PM   #2
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I've got dual 6V flooded lead/acid batteries so I can't offer advice. I can say that the batteries you're talking about in the quantity you're looking at could be over $3000 (depending on manufacturer) so maybe that explains the lack of response so far. Not a lot of people are going to pony up that much $$$
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Old 12-12-2018, 10:35 PM   #3
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Yes I know that batteries are expensive initially. It seems the best way to greatly expand capacity without adding excessive weight. Iím surprised no ones done it yet, but Iíll be a trailblazer if I need to. Thanks for the reply.
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Old 12-13-2018, 01:15 PM   #4
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Quote:
Originally Posted by RedSteelManUSA View Post
Has anyone completed an upgrade to replace the stock AGMs with Lithium Batteries? I haven't received my I5 yet, it's due in February, but l want to upgrade to lithium right away. I'm looking for a basic wiring diagram of the new I5 (including solar panels) so I can begin contacting someone like BattleBorn to see what new equipment I need to order and what wiring changes I need to make. My vision is to install five or six 100 ah batteries. Any help would be appreciated!
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Originally Posted by RedSteelManUSA View Post
Yes I know that batteries are expensive initially. It seems the best way to greatly expand capacity without adding excessive weight. Iím surprised no ones done it yet, but Iíll be a trailblazer if I need to. Thanks for the reply.
I love my Battle Born LiFePO4 batteries.

I think you need to repost the question on Isata 5 36DS wiring in the Dynamax sub forum.

The replace the stock AGMs with Lithium Batteries question should be asked in the Electrical, Charging Systems & Solar sub forum.
There is a lot of threads on Lithium Batteries there.

I waited a year until after my warranty expired before I did any major modifications to my FR3.
see: Expanding compartment space for 2200 Watt Inverter/Charger.

I made a couple mistakes:
1> I should have installed a battery monitor from the start. After I installed my Victron BMV-712, I could know the ampere hours consumed and the state of charge of my Lithium batteries from my cell phone.
2> Battle Born LiFePO4 batteries don't work below 32F. The factory battery compartment is open air for lead acid fumes. I have my FR3 at a RV Custom shop to enclose my battery bay as I write this.
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Final thoughts:
Battle Born LiFePO4 batteries have a different voltage charging curve than lead acid. Make sure your Inverter/Charger can be programed for LiFePO4 Lithium or you will destroy them.

Ask questions and search this Forest River Forum for threads about LiFePO4 batteries. Then ask more questions.
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My Samlex EVO-2212 Inverter/Charger install
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Old 12-13-2018, 06:05 PM   #5
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Here's a video of a young full time RVer. Very smart guy.

https://youtu.be/eeua0MorKMI
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Old 12-13-2018, 11:18 PM   #6
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Great video. I need someone like that to help me not damage something...like normal. Thx!
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Old 12-14-2018, 12:45 AM   #7
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Originally Posted by rk06382 View Post
I
Final thoughts:
Battle Born LiFePO4 batteries have a different voltage charging curve than lead acid. Make sure your Inverter/Charger can be programed for LiFePO4 Lithium or you will destroy them.
You won't destroy them as they have a built in BMS that will turn off the charge when they get 100% charged. The problem with not using a lithium charge profile is that you won't be taking advantage of the larger charging currents available. Personally, I switched out my converter to a lithium Progressive Dynamics.
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Old 12-14-2018, 12:46 AM   #8
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Interesting color combination for cables! Red cables for negative and a black one for one of the positive!
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Old 12-14-2018, 01:54 AM   #9
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Interesting color combination for cables! Red cables for negative and a black one for one of the positive!
I started with two ten foot 4/0 AWG cables, one Red & one Black. The positive side of the batteries is the farthest from the Inverter/Charger. To install the master shutoff on the positive side, we had to use black cable with red tape.

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400ah Battle Born LiFePO4 install (May 2018):
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Victron BMV-712 shunt install(Aug 2018):
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Master shutoff install (Aug 2018):

A work in progress.
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Old 12-14-2018, 07:23 AM   #10
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Quote:
Originally Posted by RedSteelManUSA View Post
Has anyone completed an upgrade to replace the stock AGMs with Lithium Batteries? I haven't received my I5 yet, it's due in February, but l want to upgrade to lithium right away. I'm looking for a basic wiring diagram of the new I5 (including solar panels) so I can begin contacting someone like BattleBorn to see what new equipment I need to order and what wiring changes I need to make. My vision is to install five or six 100 ah batteries. Any help would be appreciated!
I own a 36DS with 4 AGM batteries. This has been discussed on the Dynamax page but could not find the thread.
The battery tray will hold up to 4 batteries.
The comment on the charger only supporting lead acid batteries is correct. There is no setting for lithium batteries.
Consider where you will camp if lithium batteries will not work below 32 degrees. I have camped along the Gulf Shores in Jan where the temp had been below 32 at night. How will it impact charging if you store during the winter? Solar panels on my unit keep the batteries charged while being stored during winter.
You have to determine the effect on the warranty if you modify the electrical system.
Good luck.
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