I really like the new powerpro battery..
- Thread starter Will Prowse
- Start date
prometheanfire
New Member
Do we know what the max flow-through current supported by the powerpro is? Each BMS can support 200A discharge, but can it handle 800A continuous with four batteries in parallel? At the very least these configs would need a bigger cable (and I don't expect them to be supported), but knowing these values can help.
I am not sure the eg4-ll rack bus bars can handle 600A either but the batteries in the rack can do it.
In any case 4/0 cables from the 'hub'/bus-bar would be necessary for 400A alone.
I am not sure the eg4-ll rack bus bars can handle 600A either but the batteries in the rack can do it.
In any case 4/0 cables from the 'hub'/bus-bar would be necessary for 400A alone.
ksmithaz1
Solar / EV Junkie
They sell shorter versions of the same bus bar that are 600A, pretty sure they are at least that, but they don't say in an obvious place.
If you need 600A you should probably run 2x4/0 independently fused at 300A on each cable. Your cabling and bus must match your fuses/breakers/load.
prometheanfire
New Member
In my case I'd be connecting it to a sol-ark, which is ~275AMP max continuous. Not sure about load spikes and if I should still do the double 4/0 hook up with 600A of fusing (combined or before the 0/4, connected directly to bus bar). But that may be getting off topic. reading another thread now for that. ( https://diysolarforum.com/threads/system-layout-questions-sol-ark-15k-and-eg4-batteries.48156/ )
davidmpg
New Member
I'm considering EG4 18KPV with two EG4 Power Pro. These will be installed in the basement. The placement is not perfect because I have a CAT6/CATV wall panel that is kind of close to the Electrical Panel, so I need to distribute the EG4s to the left and right of it. I'm attaching 3 figures for possible placement and I would love to get opinions on which would be the most ideal. My concern with Options 1 and 2 is that it requires longer DC cable, while Option 3 brings the main grid power line close to the CAT6/CATV box (so may cause interference?). 
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wattmatters
Solar Wizard
Put the inverter to the right of the main panel, one battery underneath and the other either under the main panel or on the right hand wall. Alternatively the batteries I presume can also go one behind the other.
Rednecktek
Solar Wizard
Isn't there some rule about having to be 3ft apart or something in the UL requirements?
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cs1234
Solar Wizard
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Can't have them touching and making little baby batteries. You have to buy new ones, not make your own.
Yeah its like that rule where couples had to have one foot on the floor when in bed with someone else in a movie
cs1234
Solar Wizard
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That's how I learned how to do it. Took many years to break that habit, stupid movies!Yeah its like that rule where couples had to have one foot on the floor when in bed with someone else in a movie
Wonder how long it will take gen z folks to figure the reference out
davidmpg
New Member
I forgot to show that there's a door on the right side of the electrical panel. Let me update the picture
NFPA 855 chapter 15.5 states Individual ESS units shall be separated from each other by a minimum of 3ft. unless smaller separations are documented to be adequate as approved by the AHJ. UL9540A would be required for the exception.
Chapter 15.7 states Individual ESS units shall have a maximum stored energy of 20 KWH.
Quattrohead
Solar Wizard
What exactly is an individual ESS unit according to the regulations. Are we just talking about batteries here or are we talking about these newer combined battery inverter units?
I see what you're questioning. I don't think it means only 20 KWH per inverter. Any single battery pack stack rack can only be 20 KWH.
15.2.1 requires UL9540 listing. UL9540 can be obtained for separate components, for example Pytes batteries listed with Sol-Ark.
HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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But isn't the definition of an ESS an inverter AND batteries?
Quattrohead
Solar Wizard
Well that is the 6 million dollar question and when I started researching it this morning, I saw that it can also refer to all kinds of mechanical and other storage devices too, like hydro, compressed gas and fly wheels etc.
So a rack of batteries is not an ESS unless the manufacturer says it is an ESS in the data sheet?? Or is a CR2032 an ESS ?
Quattrohead
Solar Wizard
Seems like some of the new units calling themselves ESS are a battery, inverter/charger and load control panel. In fact one of the manufacturers at the Miami show insisted on calling it an inverter and made absolutely no mention of battery whatsoever, and I told them that was confusing.
Vigo
Solar Addict
This little NFPA fact sheet suggests that the answer regarding ESS's is: VYO.
Vague Yet Overcomplicated.
I just love TLAs so i figured i'd add my own because if there's one thing any discussion about codes and compliance needs, it's MORE TLA's!! Preferably VYO TLAs.
But TIL that unless you're gonna water your LFP adequately you are apparently supposed to 'sprinkle' an extra foot in there between stacks, as determined by your KWH.
FFS...
Four Foot Spacing, in this case.
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rsmiele
New Member
Does anyone know the original manufacturer of the PowerPro WallMount AllWeather Lithium Battery | 48V 280Ah | 14.3kWh LiFePO4 ? It may be listed in the certification paperwork or PCB boards.
Theodored
New Member
If you want to dump one of your server rack batteries , I've got a credit card ready if you can take it ! I'll pick it up !
its $ 450. to ship from Signature Solar , Yikes !!
its $ 450. to ship from Signature Solar , Yikes !!
Theodored
New Member
Thats hilarious ! I was always so amazed at your organizational neatness, refreshing to know your human !
Vigo
Solar Addict
That's nuts. When i bought my solar panels from SanTan i shipped 2 whole pallets of panels from AZ to TX for around that same price. Crazy.
muaddib721
Solar Enthusiast
As far as aesthetics go I agree its a great look... I'm still waiting on my 3 Power Pro batteries to pass UL certification to connect them to my two Sol-Ark 15k's in parallel. My setup was inspired by your latest setup with the 18kpv. Once thing I did find out in ordering my setup.... the warranty will be voided on the Power Pro's if you connect them with any batteries that are not 280ah.... see image or page 10 of manual. So the orginal setup with rack of Ruixu batteries will void the warranty on the Power Pro's. Keep up the great work.I didn't realize it until last night, but I think this battery is pretty sweet. The look, form factor, busbar with quick connectors, communication ability, internal heaters, outdoor rated and the list goes on.
Now I want to dump my server rack batteries. Which one would you rather have. This setup:
View attachment 162371
Or four of these:
View attachment 162372
I just love the look. I love sci-fi movies and I want to make a system that looks really cool. I'm thinking four batteries and an 18K would do everything I need.
The communication set up was a bit difficult. I should probably make a setup video for beginners. I think anybody could figure it out though if they read the whole manual. I think there should be a tutorial on designating the master battery right after the communication protocol set up.
But besides that, this battery is pretty impressive. I'm going to be asking all of the other companies why they don't have this type of battery. Hopefully we can get some healthy competition into the market.
What do you guys think. Is there anything that you dislike about this battery that I'm missing? I really didn't think I was going to like it but seeing it in my shop in person, makes me want only these batteries now. I think I might move my server rack batteries into my garage today. I only have two power pro batteries but I could run everything I need with them. I'm almost at 5 megawatt hours with my 18K, so I really don't need to push tons of loads through it anymore. Making a beautiful system would be fun. I want to add LED lights behind it and make it pop
Attachments
ksmithaz1
Solar / EV Junkie
A follow-up. This thing is awful. the 4.5KVA unit ships with two L6-30S, and two L5-30S. We paid an electrician to wire it. He did not secure the ground from the panel and wired a short Y-GND on one of the L6-30P pigtails to the overhead distribution outlets. This short blew the power module as soon as it turned on. No, it did not trip the breaker, it blew the power module. The batteries are in a series parallel arrangement 60v x 2 = 120v pairs. Based on the label there appears to be a 40A DC fuse on the 120v.. There is a 30A breaker on the L6-30 plug. When it turned on it immediately blew the non-serviceable DC fuse inside the power module, and reported same on the front panel. A stunningly poor design for the power module. NOTE: this is an online UPS, runs off the batteries all the time.
Great concept, awful implementation.
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