Costco Wholesale has for their
Members:
EcoFlow Delta Pro 3 Power Backup System (2-Count EcoFlow 4KWH Delta Pro 3 Units + 50 Amp Hub) for
$4999.99.
Shipping is free.
Thanks to Community Member
fpolsky87 for finding this deal.
Features:- Includes:
- 2x EcoFlow DELTA Pro 3 Portable Power Station
- EcoFlow 50 Amp Hub
- Two sets of 4KWh DELTA Pro 3 units paired together for an extended power supply
- Plug-and-play power solution for your entire home with 120V/240V capability
- Recharge with AC or solar for energy savings
- 10ms swift switchovers to protect your NAS systems, servers, and appliances from power disruptions
- Long-lasting 10-year LFP battery for reliable performance
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Wiring may or may not be easy depending on end design goals. If you're just slapping everything together, yes, it might take only 10 minutes if you purchased premade wires ($$$) and don't care about excess wiring and form factor. If making your own wires, at least an hour. If you have any care about form factor and looks, at least 4 hours. Try to put everything neatly in the most compact form you can, and that can easily take a day. Never underestimate how long a DIY project can actually take.
Very well articulated! I think your estimate is very reasonable. If you care about form factor, it's definitely going to take time to make it look right. Perhaps mock it up, sketch it out. Plus it's not unusual to encounter some issue or realize some new design consideration while you're installing and setting up.
$5000 (Ecoflow price ) minus ~$1700 =$3300
Plus it can be expanded to 28.8 KW with only $160 per KW.
Wiring is super easy actually, takes 10 mins if you have the right connectors and wires. Does not take a whole day!
Agree on the form factor though but that's the only benefit.
How do you wire it into your main panel?
I was leaning towards the Ultra, because I feel like the solar input on the DP 3 is still rather limited at 160V. I have two 410W SilFab panels. Max Power Voltage 38V. I would barely be able to string 4x of those together. Max Open Circuit Voltage? 45.92V! 4x = 183.68V. Sure that's what the label says. I could wait until it's 28ºF outside at noon and measure the actual open circuit voltage. But I'm not sure I want to wait 4 months to do that.
I want higher voltage to minimize losses, because I'm going to be running about 150' feet from solar panels to breaker box. Higher voltage will enable me to use 12AWG instead of 6 or 8AWG. Big $$ difference.
I don't anticipate having to move these around at all (e.g. for camping, RV, etc.). Already have a Delta 2 Max that can be lugged around if needed.
Thanks for sharing this deal!
Good write up about it here: http://www.linspyre.co
How do you wire it into your main panel?
Is Ecoflow magically going to do wiring to your main panel?
Either way as I said you can add 28.8KW for $160 per KW.
How much will that many KWs cost you with Ecoflow? You will need to buy 7 ecoflows for $5k each. That will run to $36k.
With a diy approach for a 28kw you will only spend $3840 for lifepo4 batteries.
It's literally day and night difference on the cost of ownership!
Is Ecoflow magically going to do wiring to your main panel?
Either way as I said you can add 28.8KW for $160 per KW.
How much will that many KWs cost you with Ecoflow? You will need to buy 7 ecoflows for $5k each. That will run to $36k.
With a diy approach for a 28kw you will only spend $3840 for lifepo4 batteries.
It's literally day and night difference on the cost of ownership!
Where are you even sourcing batteries from @ $160/kW anyway? If you're going to make claims like this, back it up with links..
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Have you pulled up the specs for both and compared?? If not, I'd say that's a fantastic place to start.
For one, I believe the solar input is higher for the DP 3. Higher total. I think the high input is 160V still. But now there's a secondary, lower voltage input as well.
Another difference, I think, is 240V output from the DP3 without the hub that the Delta Pro Ultra requires... Not sure. But again, with those specs pulled up --> the differences are usually pretty obvious. I'm sure there are plenty of articles and videos to be found on the topic at this point. You'd just have to decide whether the +$1,800 was worth it for those differences.
For starters, this is two units - or $2500 each.. and the original Delta Pro is currently $2500 new from ecoflow direct.. it'd be foolish to pay $3.2k for a refurb delta pro...
Where are you even sourcing batteries from @ $160/kW anyway? If you're going to make claims like this, back it up with links..
80% of the batteries are made in China INCLUDING Ecoflow who makes theirs from Shenzhen China.
Also batteries can be BUT they are NOT required to be UL certified and most OEMs don't do it.
As for where I am getting $160 per KW just go to Amazon and search 12V 100ah lifepo4 batteries and you will find several around that price range with 100 amp bms built in.
In fact you are getting 1.2KW to be precise for $160.
Back it up with link? Go to Amazon and search for
"ECO-WORTHY 12V 100AH Mini Size Group 24 LiFePO4 Lithium Battery with BMS"
It's got 10% off coupon so it's actually $153 for 1.2KW
We can have one Delta Pro 3 that can also be used to charge other LiFePO4 batteries.
We can have one Delta Pro 3 that can also be used to charge other LiFePO4 batteries.
This is slickdeals so I was sharing a much much cheaper option with the community. Isn't that the point of slickdeals?!
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80% of the batteries are made in China INCLUDING Ecoflow who makes theirs from Shenzhen China.
Also batteries can be BUT they are NOT required to be UL certified and most OEMs don't do it.
As for where I am getting $160 per KW just go to Amazon and search 12V 100ah lifepo4 batteries and you will find several around that price range with 100 amp bms built in.
In fact you are getting 1.2KW to be precise for $160.
Back it up with link? Go to Amazon and search for
"ECO-WORTHY 12V 100AH Mini Size Group 24 LiFePO4 Lithium Battery with BMS"
It's got 10% off coupon so it's actually $153 for 1.2KW
Just watch some youtube reviews where people have actually torn down and/or tested the safety features that many of these cheap batteries claim to have. There are some 'diamonds in the rough', however, many advertise things like high/low temperature shutoff, short circuit/overcurrent protection, but don't actually have those working as advertised. They'll also often have things like pinched wires, poor connections, poor construction allowing movement, etc. All have the potential to start a fire. I could go on...
Bottom line is: when things have to go through certification processes & more rigid QA standards to satisfy UL or ETL, risk of fire/failure is reduced significantly, and insurance won't deny a claim if something DOES happen with a UL listed product.
Often times, your only recourse for a cheap amazon battery failure is amazon's 30-day return policy - with no other warranty support whatsoever.
A more appropriate/comparable battery option that's actually UL listed would be something like the LifePower4 from Signature Solar [signaturesolar.com], which comes in about 25 cents per Wh shipped - not a bad price for peace of mind. 5 year warranty.
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