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frontpage Posted by DianaND33 • Feb 24, 2025
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frontpage Posted by DianaND33 • Feb 24, 2025

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

+ Free Shipping

$2,000

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

Deal Score
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Top Comments

DianaND33
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.

27 Comments

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Feb 24, 2025
2 Posts
Joined Apr 2013

This comment has been rated as unhelpful by Slickdeals users.

Feb 24, 2025
144 Posts
Joined Sep 2012
Feb 24, 2025
TheFakeMcC0y
Feb 24, 2025
144 Posts
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
Pro
Feb 24, 2025
113 Posts
Joined Mar 2024
Feb 24, 2025
GreyString8671
Pro
Feb 24, 2025
113 Posts
Really great price for these. If you have a delta pro 3, these also work with your main unit
Feb 24, 2025
353 Posts
Joined Jun 2011
Feb 24, 2025
pingpingpang
Feb 24, 2025
353 Posts
Does the battery work by its own? like charging and discharging.
Feb 24, 2025
79 Posts
Joined Nov 2013
Feb 24, 2025
rocsci
Feb 24, 2025
79 Posts
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
Pro
Feb 24, 2025
173 Posts
Joined Nov 2024
Feb 24, 2025
DianaND33
Feb 24, 2025
Original Poster
Pro
173 Posts

Our community has rated this post as helpful. If you agree, why not thank DianaND33

Quote from rocsci :
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
Pro
Feb 24, 2025
173 Posts
Joined Nov 2024
Feb 24, 2025
DianaND33
Feb 24, 2025
Original Poster
Pro
173 Posts
Quote from pingpingpang :
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
4 Posts
Joined Feb 2025
Feb 24, 2025
PurpleApparel3091
Feb 24, 2025
4 Posts
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
65 Posts
Joined Jul 2022
Feb 25, 2025
grouch7
Feb 25, 2025
65 Posts
can these things be used as a UPS?
Feb 25, 2025
27 Posts
Joined Jul 2011
Feb 25, 2025
bsk997
Feb 25, 2025
27 Posts
Quote from PurpleApparel3091 :
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
27 Posts
Joined Jul 2011
Feb 25, 2025
bsk997
Feb 25, 2025
27 Posts
Quote from grouch7 :
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
97 Posts
Joined Mar 2016
Feb 25, 2025
COMMANDAAAH
Feb 25, 2025
97 Posts
Quote from grouch7 :
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
82 Posts
Joined Jul 2018
Feb 25, 2025
MiksMeh
Feb 25, 2025
82 Posts
Can these be combined with Delta Pro 2
Feb 25, 2025
426 Posts
Joined Dec 2007
Feb 25, 2025
1111111111
Feb 25, 2025
426 Posts
Quote from MiksMeh :
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
1,519 Posts
Joined Jan 2010
Feb 25, 2025
swgfanforlife
Pro
Feb 25, 2025
1,519 Posts
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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