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Old 01-15-2015, 08:28 PM   #1
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To hell with 12 Volts?

Curious ... I have been researching lithium batteries and I ran across these. Smart Battery® 60V 100AH Lithium Ion Battery
They are 60 Volt 100 Amp Hour batteries. In the 12 Volt world that's the equivalent of 1000 Amp Hours. Should be able rock and roll for quite a while with that kind of juice. For the purpose of discussion why would this be an awesome idea or a terrible idea. Wire two in series for a 120 Volts and to hell with 12 volt systems. This should be possible right? I can't wrap my head around charging implications.

I realize they are expensive and I realize most components are designed to run on 12 Volts so you would have to redesign an RV from the ground up I suppose.

You have any thoughts? If you tell me to I will go back on my meds
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Old 01-15-2015, 08:31 PM   #2
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One is direct current and the other is alternating current. They do not mix!
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Old 01-15-2015, 08:42 PM   #3
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One reason the US no longer has any 120v DC systems is that they are more deadly than 120v AC systems. With AC you can let go if you grab a hot circuit. With DC your muscles will contract and you can't let go. Big safety issue.
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Old 01-15-2015, 08:42 PM   #4
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Oh Crap, that's right. Silly question! How do I delete that lol. I can't believe I didn't think of that. Been reading to much. Need to calm down haha
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Old 01-15-2015, 08:49 PM   #5
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Oh Crap, that's right. Silly question! How do I delete that lol. I can't believe I didn't think of that. Been reading to much. Need to calm down haha
Hit "edit" on your original post. Then look for "delete message" button, hit it, then hit "delete message". If you are fast enough you can get to it before the "edit" option expires .
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Old 01-15-2015, 08:49 PM   #6
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Oh Crap, that's right. Silly question! How do I delete that lol. I can't believe I didn't think of that. Been reading to much. Need to calm down haha
A couple of positives for you....You know how to read and you are thinking
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Old 01-15-2015, 08:56 PM   #7
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Meh, I'll let it be for the humor aspect I supposed. Since I'm on a roll ...Can a 120 Volts DC be converted to 120 Volts AC. I'm thinking of an APC battery used in data centers. They store juice in batteries and when the power goes out the batteries supply power to the servers and what not. I feel like this is getting a little silly but it could be done (I think)
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Old 01-15-2015, 08:59 PM   #8
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Meh, I'll let it be for the humor aspect I supposed. Since I'm on a roll ...Can a 120 Volts DC be converted to 120 Volts AC. I'm thinking of an APC battery used in data centers. They store juice in batteries and when the power goes out the batteries supply power to the servers and what not. I feel like this is getting a little silly but it could be done (I think)
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Old 01-15-2015, 11:29 PM   #9
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One reason the US no longer has any 120v DC systems is that they are more deadly than 120v AC systems. With AC you can let go if you grab a hot circuit. With DC your muscles will contract and you can't let go. Big safety issue.
Right, anything 48VDC and above can kill.
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Old 01-15-2015, 11:54 PM   #10
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I clicked on the link in the OP's post...

...That "kit" is just a 5 set of 12VDC lithium ion cells...there would be no mods needed to use them in a RV...too funny.

Of course they are almost $6,000 for the 5 set, and you would want to add a charger programmed for li/ion cells to ensure a good long life...but still doable.

Hmmm....that's equal to the cost of over 60 regular lead/acid 6VDC batteries
The price of these new batteries are coming down...but that's pretty rich IMHO.

Safe travels

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Old 01-16-2015, 12:10 AM   #11
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I clicked on the link in the OP's post...

...That "kit" is just a 5 set of 12VDC lithium ion cells...there would be no mods needed to use them in a RV...too funny.

Of course they are almost $6,000 for the 5 set, and you would want to add a charger programmed for li/ion cells to ensure a good long life...but still doable.

Hmmm....that's equal to the cost of over 60 regular lead/acid 6VDC batteries
The price of these new batteries are coming down...but that's pretty rich IMHO.

Safe travels

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Old 01-16-2015, 08:07 AM   #12
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Since the 12 volt systems including the control computer for the Fridge, and water heater (And possibly air conditioenrs) are all 12 volt and changing them to other voltage is not all that easy.

Why not these
12V 300AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products

Same company, bit more than half the price (3/5) and, as it turns out 3/5 the capacity as well (total watt hours that is) You could put in two for only slightly more and have still more total amp hours at 12 volts (total watt hours) .
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Old 01-16-2015, 09:52 AM   #13
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I agree. If I were to buy lithium batteries today this is what I would get. Not necessarily this brand but 12 Volts and 600 Amps. I was just wondering if in the future we could see RV's being manufactured this way. It just seems simpler to have one type of electrical system in your rig whatever it may be. I'm not sure what complexities are involved in having a frequency converter though. Well everything said and done I could see the danger aspect of that much DC being a real issue.

Not that I want to change the subject but I have been researching Fuel Cell's also. By the time I get around to buying (10 years sadly) maybe these will be main stream. Here is a pretty cool article if you are so inclined. These things are basically a generator with no sound and no vibration and no pollution from what I can gather.
Fuel Cells For Truck Campers
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Old 01-16-2015, 06:22 PM   #14
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Well considering the price,, and the fact that it is dropping rather fast.

yes, I think we will see lithium batteries in our future.. Not sure when.
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