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Old 01-24-2016, 11:11 PM   #1
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Lithium Ion Battery Generator

I bought a 12v Lithium Ion Battery battery pack that has 880w/70ah capacity and has a pure sine inverter built into it, and also has a 12v plug and USB plugs. I have attached a couple of photos.

The tech specs in the manual indicate:
USB Plugs - 5v, max 15w for two ports, 30w for four ports
Cigarette Port - 12v, 96w max
AC Inverter - 115V, 4.6a (500w continuous)

I bought it for it's portability (it only weighs 25 lbs), pure sine inverter and high amp hour capacity which will allow me to charge laptops/tablets/tools and tv when off grid. I am now wondering, could I use it as a secondary/emergency power source when off grid for the trailer (only lights, water pump, and possibly furnace) to supplement a low capacity lead acid battery (65 amp hour capacity). It also has two anderson ports for connecting to solar panels to recharge it.

My questions to those with more electrical knowledge than me:

1. Would I be able to plug my 30amp trailer power cord into this battery pack (with a 15amp adapter) and power my trailer? I know that it doesn't provide enough for the heavy draw items like Microwave and A/C, but could it run the LED house lights, water pump, and furnace?

2. Could it charge my trailer's house battery? My owners manual says the converter pulls 8amps which I understand to be ~100w which is well within the 500w continuous capacity of the battery pack inverter. If it can charge the house battery via the converter, then I know that I can run the house lights, water pump, and furnace from the trailer battery.

3. Could I connect it directly into the 12v system with a male-male 12v adapter since it has a socket, and my trailer has a couple of sockets in it? I would do it this way so that it wasn't inverting the power to 115v, then feeding into the trailer converter to be switched back to 12v to charge the house battery. I am thinking similar to the automotive battery boosters that you can plug into your cigarette lighter for a few minutes and then start your car if the battery was dead.

It seems like a cool little pack that cost less than an AGM battery and gives me a lot of flexibility for camping and non-camping activities - if I could run the trailer off of it if I had to, that would be a bonus.
Attached Thumbnails
Battery.jpg   Battery Panel.jpg  
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Old 01-25-2016, 07:37 AM   #2
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I'll be watching this thread, also, for advise from you more electrical-savvy members. I've been looking for a pure-sine inverter to power my CPAP machine (for sleep apnea) while Walmarting & Rest Stop napping, but am worried about it depleting my single house battery. Purchasing a new pair of true deep cells, plus battery boxes & cables, plus the inverter is a little out my budget right now. Your little battery pack may be a more versatile alternative.

TommyAjax - may I ask the name brand, price, and where you purchased it? Don't want to hijack your thread, but I'm really interested in your find.
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Old 01-25-2016, 08:03 AM   #3
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I got it through Walmart here in Canada - it was on clearance and is showing out of stock - came to about $330 CAD or about $250 USD - regular pricing would have put it at about $450 CAD or $350 USD.

The brand name is "Power It!" but I have never heard of it and couldn't find much info on it outside of the Walmart reviews so I was hesitant to get it, but it seems legit now that I have it - seems fairly well made, but I have only had it for a week. Basically charged it and put a few different sized lights and electronics on it to see if the meters changed turning the lights on and off, and everything seems to be working.

Again, my main purpose was to get it for charging electronics and maybe running the television if off grid, but trying to think of other ways that it could make my life easier.

http://www.walmart.ca/en/ip/power-it.../6000192325762
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Old 01-25-2016, 08:14 AM   #4
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Wow!! Pricey!! Seems an extra reg 12v deep cycle and a 600 watt inverter would do what you want for a whole lot less.

Answer to your ? Yes you can plug your Rv into it with a 15amp adapter but I would only do it in an emergercy.
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Old 01-25-2016, 08:29 AM   #5
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Problem with the extra deep cycle and separate inverter is portability - remember that 70 amp hours in lithium is close to 60 amp hours of available power (80% draw) where a 100 amp hours of lead acid deep cycle is 50 amp hours of available power (50% draw). This battery pack weighs 12kg/25lbs - a deep cycle battery is 50+ lbs. And this is all in a nicely contained "consumer" package that I can just plug into an AC wall outlet to charge it up - don't have to wire it into the trailer or have a separate charger, or worry about having a separate inverter wired to the deep cycle (more cords to trip over). Plus Lithium batteries are supposed to have a longer life (more charging cycles) and don't have a charge memory, charge faster, no maintenance, and don't have to be recharged to "full" like lead acid.

To save on tongue weight (I only have a Ram 1500 and am near payload capacity with my trailer and the kids are growing), I am actually thinking about replacing the Group 24 battery with a Lithium drop in but the CADUSD exchange rate makes a 100 amp hour lithium battery about $1500 CAD/$1000 USD. For security reasons, I would move the battery location into the trailer. So for $300, I can see if the lithium battery in this little pack performs as advertised.

I will probably try and find some time in the next week or so to head out to the trailer (it is in storage about 30 mins away) to see if I can fire up the furnace using it as my shore power.
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Old 01-25-2016, 09:21 AM   #6
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Well....the limiting thing is it's continuous 120v rating, and that it can only deliver 4.6 amps. 500 watts is about 5 amps. (watts divided by volts = amps, or volts*amps = watts) So running it at max will give you a little less than 1 hr.

My CPAP pulls about 90w an hour, if just used for that, it will get you about 5 hours.
Your lights might work for several hours. Only a very short while for the pump and furnace. As far as tools - depends on what size the existing batteries are - some may be getting close to what's in the gadget.

Lithium's are noted for being able to dump a lot of power really quickly - so it could likely handle a load that demands 70 amps all at once. But the 880 watt tells one that it can't deliver that level very long! So they haven't really lied, it is "70ah", but all you get is one hour.....not like lead acid where you get it for 15-20 hours, depending on what rating system the manufacturer uses....
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Old 01-25-2016, 10:12 AM   #7
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Thanks Flapper. So my Jayco book indicates that the furnace runs at 12 amps and is 12 volt so would be about 150 watts per hour when running non-stop. Hopefully it isn't cold enough that the furnace is running non-stop so I am thinking ~ 100 watts per hour. If my house battery died in the middle of the night, I should be able to use this pack to get me through another 4-5 hours in a pinch.
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Old 01-25-2016, 05:12 PM   #8
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Until they get the cost down on lithium and solve the problem with them catching fire, its not something that will get close to my RV or home for that matter. Really this thing looks nice and has some nice features but still just a glorified and expensive jump box.
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Old 01-25-2016, 06:08 PM   #9
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I have a gel cell unit simular to that one, cleary not quite as nice. I have never hooked it up to the tt. Mine also has a small air compressor, which I have only used for bicycle tires. Works great hold a charge for a long time. I use it often when tent camping, such as week long summer camp with the scouts. It will run a small 12v clip on fan all night for all week.

In a pinch, sure hook it up to the tt. Personally, do not use the inverter, it consumes to much power. Buy a 12v aux plug a fuse harness, determine the required fuse size, and place it ether at the battery location, disconnect tt battery. Or make a plug that will back feed into a 12v aux outlet. Again diconnect the tt battery. I bet you can make it 24 to 48 hours using it.
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Old 01-25-2016, 11:39 PM   #10
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Quote:
Originally Posted by Bassdogs View Post
Until they get the cost down on lithium and solve the problem with them catching fire, its not something that will get close to my RV or home for that matter. Really this thing looks nice and has some nice features but still just a glorified and expensive jump box.
Isn't that kind of like saying "I'm not going to drink water because it has hydrogen in it?". Cell phone and laptop batteries are lithium based now as well. Yes, there were several sensational reports about Boeing and Sony having issues, but shark attacks get the same type of coverage and they don't actually happen that often.

From The Economist:
"In 2006 millions of lithium-ion battery packs made by Sony were replaced after several hundred overheated and a few caught fire. These batteries were used in laptop computers produced by a number of manufactures. Since then, production processes have improved and fires remain relatively rare. As Elon Musk, Tesla’s founder, has pointed out that with some 30,000 Tesla cars now on the road, fires have affected one in 10,000 vehicles—which sounds bad, but the equivalent statistic for petrol-powered cars is one in 1,300. And it is not just lithium batteries that cause fires. Old-fashioned lead-acid batteries can explode too."

But to each their own...
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