12V 200Ah Lithium Iron LiFePO4 Deep Cycle Battery

[Ynot4me2]

I don't have any experience with them or any other lithium replacements.

However as I'm thinking about them I've been wondering whether I would buy 4-6 100Ah batteries or 2-3 200Ah batteries. Seems to me that in the event of a battery failure it would be nice if it wasn't a twice-as-expensive 200Ah that needed to be replaced, so I'm leaning towards buying more smaller-capacity batteries rather than fewer larger-capacity ones.

Using more small batteries would mean using a lot more cable and bus bars to ensure that all batteries were connected with same-length connections, but after that extra cost and effort I'd sleep better knowing that 100Ah replacements are cheaper and easier to get.

Are you leaning the other way for a reason I haven't considered? Thx.

If you go with a batt like SOK, you can replace the individual faulty battery cell as opposed to the whole battery. That something that caught my attention when I watch the video the Will Powers made when he evaluated the SOK and Big Battery. I like the ideal of 1-2 SOK batteries.

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[SolarPoweredRV]

Wow, 50 amps is only 600W. Are you supplementing your system with solar to run the Air Conditioner? When I benchmarked my system with power measurements, my microwave along drew 155 amps from the batteries.

You are correct, I actually have fused my system at 150 amps (on a 24v system).

I edited the above post.

Sorry for the confusion.

[wjpatter]

That's a serious microwave!

Surprised me! My inverter is now undersized for my planned usage. I had assumed 1-1.2 kw when I installed the 2000W inverter. I'll have to be careful what I else run when the Microwave is on and that was something I really didn't want to get into.

[SolarPoweredRV]

Surprised me! My inverter is now undersized for my planned usage. I had assumed 1-1.2 kw when I installed the 2000W inverter. I'll have to be careful what I else run when the Microwave is on and that was something I really didn't want to get into.

Usually you need to be aware of what you are running when you are running the Inverter, i.e.: you don't want to run the Microwave while the Air Conditioner is running. Basically, you don't want two high-draw appliances running simultaneously.

[rootusrootus]

Usually you need to be aware of what you are running when you are running the Inverter, i.e.: you don't want to run the Microwave while the Air Conditioner is running. Basically, you don't want two high-draw appliances running simultaneously.

Personally, I'm not planning to support the air conditioner, but I'd definitely like to have a working microwave. First thing I'm going to do when I get my new trailer home is plug in the kill-a-watt and find out how big an inverter I need for that microwave. . I kinda like the look of the Victron 2000W inverter/charger, but maybe 3000W will be a better option.

[DaveMatthewsBand]

Folks should also consider the fact that people are lazy and often want to run multiple devices simultaneously. I routinely run our microwave, air fryer, and several other items together.

I usually glance over at the inverter display to see how many amps it is putting out and this number is more often than not about 300 to 350 amps!

I have 400 amp hours of lithium so it can handle it, but if I had only one battery, even a lithium, I could only run one of these devices at a time and it would take me forever to make breakfast while dry camping!

: )


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[Bamurray71]

What is everyone doing for the charger? Do you need to upgrade?

[SolarPoweredRV]

What is everyone doing for the charger? Do you need to upgrade?

It depends on what your setup is. If you are installing an inverter, many upgrade to an Inverter/Charger (like the Victron) instead of a simple inverter. If you are not going that route, many are replacing their Converter with a "Lithium Ready" Converter from Progressive Dynamics. Either way, you usually have to upgrade the OEM Converter to a unit that is capable of charging the Lithium (LiFePo4) batteries.

[rrlowen]

Can anyone direct me to where I can buy a true 12V 400A disconnect switch. I purchased one online and it turns out it is actually a 300A but good for intermittent 400A.

[gbkims]

Can anyone direct me to where I can buy a true 12V 400A disconnect switch. I purchased one online and it turns out it is actually a 300A but good for intermittent 400A.

770-EZ 400A Continuous - https://baymarinesupply.com/bep-mari...ry-switch.html