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DianaND33 31.4K Views
Feb 24, 2025 11:25 AM

Costco Members: 2-Pack EcoFlow DELTA Pro 3600Wh Smart Extra Batteries

$2,000

+ Free Shippingat Costco Wholesale
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Deal Details
EcoFlow via Costco Next has for Costco Members: 2-Pack EcoFlow DELTA Pro 3600Wh Smart Extra Batteries on sale for $1,999.99 when you follow the steps below. Shipping is free.

Thanks to Community Member DianaND33 for sharing this deal.

Steps:
  1. Visit the Costco Next Page.
  2. Sign In to your Costco Account via the pop-up or the Sign In link at the top of the page.
    • Note: Must click the Sign in with Costco Wholesale button on the pop-up for this offer to work properly.
  3. Once signed in, click on Visit EcoFlow to go to the EcoFlow Website.
    • Note: This is required in order to avoid a 'Not Authorized' error in the next step.
  4. Go to the 2-Pack EcoFlow DELTA Pro 3,600Wh Smart Extra Batteries, you should see the $1,999.99 price.
  5. Add to cart and proceed to checkout.
  6. Your total should be $1,999.99 with free shipping.
Bundle Includes:
  • Two EcoFlow DELTA Pro Smart Extra Batteries
    • 3,500 cycles to 80% + capacity
    • 3,600Wh (48V) Capacity
    • LFP batteries
    • 25" x 11.2" x 16.4" (84 lbs)

Editor's Notes

Written by jimmytx | Staff

Original Post

Written by DianaND33
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
EcoFlow via Costco Next has for Costco Members: 2-Pack EcoFlow DELTA Pro 3600Wh Smart Extra Batteries on sale for $1,999.99 when you follow the steps below. Shipping is free.

Thanks to Community Member DianaND33 for sharing this deal.

Steps:
  1. Visit the Costco Next Page.
  2. Sign In to your Costco Account via the pop-up or the Sign In link at the top of the page.
    • Note: Must click the Sign in with Costco Wholesale button on the pop-up for this offer to work properly.
  3. Once signed in, click on Visit EcoFlow to go to the EcoFlow Website.
    • Note: This is required in order to avoid a 'Not Authorized' error in the next step.
  4. Go to the 2-Pack EcoFlow DELTA Pro 3,600Wh Smart Extra Batteries, you should see the $1,999.99 price.
  5. Add to cart and proceed to checkout.
  6. Your total should be $1,999.99 with free shipping.
Bundle Includes:
  • Two EcoFlow DELTA Pro Smart Extra Batteries
    • 3,500 cycles to 80% + capacity
    • 3,600Wh (48V) Capacity
    • LFP batteries
    • 25" x 11.2" x 16.4" (84 lbs)

Editor's Notes

Written by jimmytx | Staff

Original Post

Written by DianaND33

Community Voting

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Top Comments

DianaND33
182Comments
115Reputation
The difference is this guy is using extra batteries that are not supported. However when EcoFlow released the Delta Pro 3 they specifically made it compatible with he Delta Pro Extra Batteries. It is even called out in the specs "Supports up to two DELTA Pro 3 Smart Extra Batteries / DELTA Pro Smart Extra Batteries". The heat issues this guy experienced was due to using batteries with main units that aren't meant to be used together but he was doing it as a hack.
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28 Comments

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Feb 24, 2025 3:32 PM
2 Comments
Joined Apr 2013

This comment has been rated as unhelpful by Slickdeals users.

Feb 24, 2025 4:19 PM
153 Comments
Joined Sep 2012
TheFakeMcC0yFeb 24, 2025 4:19 PM
153 Comments
Pretty impressed with this system as a whole, hooked up a furnace bypass and tested it out. The base pro will run it for about 4 hours estimated not counting it cycling off and on. 8 with the current battery I already have. Really want a second battery but this would give me 3. Anyone in SW PA that want to go halfsies
Feb 24, 2025 4:21 PM
124 Comments
Joined Mar 2024
GreyString8671Feb 24, 2025 4:21 PM
124 Comments
Really great price for these. If you have a delta pro 3, these also work with your main unit
Feb 24, 2025 6:12 PM
386 Comments
Joined Jun 2011
pingpingpangFeb 24, 2025 6:12 PM
386 Comments
Does the battery work by its own? like charging and discharging.
Feb 24, 2025 6:46 PM
85 Comments
Joined Nov 2013
rocsciFeb 24, 2025 6:46 PM
85 Comments
Was planning to get this for my DP3 and then came across this video. Looks like it would be a fire hazard due to cables getting extremely hot at high loads.

https://youtu.be/h9TfGcCd_7U
2
3
Original Poster
Feb 24, 2025 9:29 PM
182 Comments
Joined Nov 2024
DianaND33
Original Poster
Feb 24, 2025 9:29 PM
182 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from rocsci View quoted comment :
Was planning to get this for my DP3 and then came across this video. Looks like it would be a fire hazard due to cables getting extremely hot at high loads.

https://youtu.be/h9TfGcCd_7U
The difference is this guy is using extra batteries that are not supported. However when EcoFlow released the Delta Pro 3 they specifically made it compatible with he Delta Pro Extra Batteries. It is even called out in the specs "Supports up to two DELTA Pro 3 Smart Extra Batteries / DELTA Pro Smart Extra Batteries". The heat issues this guy experienced was due to using batteries with main units that aren't meant to be used together but he was doing it as a hack.
4
Original Poster
Feb 24, 2025 9:30 PM
182 Comments
Joined Nov 2024
DianaND33
Original Poster
Feb 24, 2025 9:30 PM
182 Comments
Quote from pingpingpang View quoted comment :
Does the battery work by its own? like charging and discharging.
No. These are extra batteries designed to be hooked up to a min unit. Either a Delta Pro or Delta Pro 3

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Feb 24, 2025 11:15 PM
4 Comments
Joined Feb 2025
PurpleApparel3091Feb 24, 2025 11:15 PM
4 Comments
If I use these with a Delta Pro can i use it as back up power to power essentials in my home in case of a power outage? I'd be looking to run a pellet stove, fridge, tv, router, and power phones.
Feb 25, 2025 5:02 AM
126 Comments
Joined Jul 2022
grouch7Feb 25, 2025 5:02 AM
126 Comments
can these things be used as a UPS?
Feb 25, 2025 5:06 AM
28 Comments
Joined Jul 2011
bsk997Feb 25, 2025 5:06 AM
28 Comments
Quote from PurpleApparel3091 View quoted comment :
If I use these with a Delta Pro can i use it as back up power to power essentials in my home in case of a power outage? I'd be looking to run a pellet stove, fridge, tv, router, and power phones.
Yes, these are extra batteries that will extend the total battery of your delta pro.
Feb 25, 2025 5:09 AM
28 Comments
Joined Jul 2011
bsk997Feb 25, 2025 5:09 AM
28 Comments
Quote from grouch7 View quoted comment :
can these things be used as a UPS?
No, these are extra batteries. You need a Delta Pro 3 if you want an "UPS".
1
Feb 25, 2025 5:12 AM
180 Comments
Joined Mar 2016
COMMANDAAAHFeb 25, 2025 5:12 AM
180 Comments
Quote from grouch7 View quoted comment :
can these things be used as a UPS?
These can't really be used on their own, they have to be attached to a Delta Pro or Delta Pro 3 main unit that actually has the inverter and control unit (edit: and an additional 3.6-4 kWh). That being said, if you attach these to a Delta Pro 3, that model is specifically advertised as "a comprehensive 10ms UPS", meaning it should switch to backup mode in under 10 milliseconds. The original Delta Pro isn't specced like that and I'm not sure how quickly it switches over.
1
Feb 25, 2025 7:23 AM
149 Comments
Joined Jul 2018
MiksMehFeb 25, 2025 7:23 AM
149 Comments
Can these be combined with Delta Pro 2
Feb 25, 2025 9:08 AM
518 Comments
Joined Dec 2007
1111111111Feb 25, 2025 9:08 AM
518 Comments
Quote from MiksMeh View quoted comment :
Can these be combined with Delta Pro 2
There is no individual Delta Pro 2 unit, correct? The Delta Pro 2 is (2) Delta Pro units paired together with a Double Voltage Hub, right? LMK if I have that wrong.

If it is two Delta Pro units paired with the DVH these batteries would work.

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Pro
Feb 25, 2025 10:45 AM
1.8K Comments
Joined Jan 2010
swgfanforlife
Pro
Feb 25, 2025 10:45 AM
1.8K Comments
So if I buy a Delta Pro 3 and get these as well, that is around 11,000 watt hours of reserve power I'd have?

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