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Red_Liz | Staff 29.7K Views
Jan 27, 2026 9:17 PM

Ecoflow Delta 2 Max Smart Extra Battery

$584

$1,399

58% off
+ Free Shippingat Wellbots
Get Deal at Wellbots

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Deal Details
Wellbots has Ecoflow Delta 2 Max Smart Extra Battery (EFDELTA2MaxEB) on sale for $649 - $64.90 (apply discount code D2MJAN10 at checkout) = $584.10. Shipping is free.

Thanks to staff member Red_Liz for finding this deal.

Features:
  • 2-6kWh expandable capacity to fit your energy storage needs
  • Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144wh
  • Ideal for home backup, caravanning, outdoors or even everyday use

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by Red_Liz | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Wellbots has Ecoflow Delta 2 Max Smart Extra Battery (EFDELTA2MaxEB) on sale for $649 - $64.90 (apply discount code D2MJAN10 at checkout) = $584.10. Shipping is free.

Thanks to staff member Red_Liz for finding this deal.

Features:
  • 2-6kWh expandable capacity to fit your energy storage needs
  • Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144wh
  • Ideal for home backup, caravanning, outdoors or even everyday use

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by Red_Liz | Staff

Community Voting

Deal Score
+29
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Top Comments

supergames
240Comments
14Reputation
Buyer beware, this is an extra battery you can connect to an existing battery you have. Does not work on its own.
Go to Comment
Mannyforever
275Comments
42Reputation
Stop buying manufacturers' extra batteries. Just get a/some LiPo4 280ah battery/ies (EcoWorthy best bang) and connect it to the EcoFlow (or any power station). Way cheaper and way more capacity. There are various vids on how to connect it, but the easiest is through the solar for 500w input (fused for safety). The most complex is "hacking" the ecoflow cable w maybe a resistor. The most expensive method (superior imo) is through ecoflows dc to dc 800w or 500w alternator charger (you don't need an alternator).

Charge the Lipo4 battery with
1) a lipo4 battery charger (needs to say lithium) plugged into a wall socket or the ecoflow (inefficient, but has reasons).
2) Solar with a controller connected to it. Or,
3) the dc to dc charger w reverse charging setting connected to the ecoflow (charge ecoflow w solar for "free" juice).

There are a lot a videos out there. I hope this sums it up and expands someone's mind like they did to me. A plethora rabbit hole of info. Good luck, stay safe, and stay charged. đź‘Ť
Go to Comment
FabulousRoute426
35Comments
14Reputation
But when you have to get the rest of the parts. + time. Or you can buy a legit one that's backed up and don't have to "hack" anything. I'm all for saving a buck but i don't want to build a shitbox if i can buy it for $50 more already built.
Go to Comment

Community Reviews

This is the Delta 2 Max extra battery, a 2048 Wh add on that pairs with an existing EcoFlow unit rather than working on its own. It is described as compatible with the Delta 2, Delta Max 2000, and Delta 2 Max, with LFP chemistry and a 3000 cycle rating to over 80 percent capacity. The deal is framed as the lowest price seen, especially when stacking an AMEX statement credit or buying multiple units. The main caution is that it is not the same as the smaller Delta 2 extra battery, so capacity and value need a careful check before ordering.

  • The extra battery can be compatible with older EcoFlow Delta 2000 setups using older battery chemistries.

    LovelyHalibut455

  • The Delta 2 Max extra battery is listed with 2048Wh capacity and LFP chemistry for about 3000 cycles to above 80% capacity.

    netstroller

  • An AMEX offer workflow at Wellbots reportedly reduced the effective checkout cost after a $100 statement credit.

    AwsiDooger

  • The Delta 2 Max extra battery is described as compatible with DELTA 2, DELTA Max 2000, and DELTA 2 Max.

    netstroller

  • The extra battery reportedly does not work by itself and requires connecting to an existing EcoFlow battery.

    supergames

  • Buying manufacturer extra batteries may require additional parts and time, which can lead to hassle compared with a fully supported setup.

    FabulousRoute426

  • The deal may be a poor capacity match if the linked alternative leads to only half the capacity you want, wasting additional money.

    SeanD1497

  • The listing may be confused with a different Delta 2 extra battery product, which can cause compatibility and expectations issues.

    AwsiDooger

Common Questions (4)

AI-generated summary based on comments from the community. Updated ago

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22 Comments

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Jan 27, 2026 10:14 PM
240 Comments
Joined Nov 2011
supergamesJan 27, 2026 10:14 PM
240 Comments

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

Buyer beware, this is an extra battery you can connect to an existing battery you have. Does not work on its own.
7
3
Jan 27, 2026 11:21 PM
7 Comments
Joined Aug 2022
LovelyHalibut455Jan 27, 2026 11:21 PM
7 Comments
This is the lowest price I have ever seen this. It also works with the older ecoflow delta 2000 with the older battery chemistries.
Jan 28, 2026 5:03 AM
431 Comments
Joined Nov 2017
AudioMikeJan 28, 2026 5:03 AM
431 Comments
Quote from supergames View quoted comment :
Buyer beware, this is an extra battery you can connect to an existing battery you have. Does not work on its own.
That's why it says "extra battery" 🤪
4
2
Jan 28, 2026 10:38 AM
332 Comments
Joined Dec 2021
AwsiDoogerJan 28, 2026 10:38 AM
332 Comments

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

I did this because I had an AMEX Offer of $100 statement credit at Wellbots if spend $999+. Expires on January 31.

The promo code worked on both extra batteries when purchasing two. No tax at Wellbots. I checked out at $1168 so the net will be $1068 upon the statement credit.

I had been eyeing that AMEX Offer for a few months but wasn't going to force anything. This worked out perfectly. Thanks OP.
1
Jan 28, 2026 9:46 PM
275 Comments
Joined Jul 2013
MannyforeverJan 28, 2026 9:46 PM
275 Comments

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

Stop buying manufacturers' extra batteries. Just get a/some LiPo4 280ah battery/ies (EcoWorthy best bang) and connect it to the EcoFlow (or any power station). Way cheaper and way more capacity. There are various vids on how to connect it, but the easiest is through the solar for 500w input (fused for safety). The most complex is "hacking" the ecoflow cable w maybe a resistor. The most expensive method (superior imo) is through ecoflows dc to dc 800w or 500w alternator charger (you don't need an alternator).

Charge the Lipo4 battery with
1) a lipo4 battery charger (needs to say lithium) plugged into a wall socket or the ecoflow (inefficient, but has reasons).
2) Solar with a controller connected to it. Or,
3) the dc to dc charger w reverse charging setting connected to the ecoflow (charge ecoflow w solar for "free" juice).

There are a lot a videos out there. I hope this sums it up and expands someone's mind like they did to me. A plethora rabbit hole of info. Good luck, stay safe, and stay charged. đź‘Ť
Last edited by Mannyforever January 28, 2026 at 01:50 PM.
2
2
Jan 30, 2026 6:08 PM
352 Comments
Joined Jan 2011
Jackswift150Jan 30, 2026 6:08 PM
352 Comments
Quote from AudioMike View quoted comment :
That's why it says "extra battery" 🤪
I interpreted the extra battery verbiage as "larger than regular Delta 2" so I appreciated the heads up from from supergames.
Jan 30, 2026 7:07 PM
1.9K Comments
Joined Nov 2007
h0va4lifeJan 30, 2026 7:07 PM
1.9K Comments
Quote from Mannyforever View quoted comment :
Stop buying manufacturers' extra batteries. Just get a/some LiPo4 280ah battery/ies (EcoWorthy best bang) and connect it to the EcoFlow (or any power station). Way cheaper and way more capacity. There are various vids on how to connect it, but the easiest is through the solar for 500w input (fused for safety). The most complex is "hacking" the ecoflow cable w maybe a resistor. The most expensive method (superior imo) is through ecoflows dc to dc 800w or 500w alternator charger (you don't need an alternator).

Charge the Lipo4 battery with
1) a lipo4 battery charger (needs to say lithium) plugged into a wall socket or the ecoflow (inefficient, but has reasons).
2) Solar with a controller connected to it. Or,
3) the dc to dc charger w reverse charging setting connected to the ecoflow (charge ecoflow w solar for "free" juice).

There are a lot a videos out there. I hope this sums it up and expands someone's mind like they did to me. A plethora rabbit hole of info. Good luck, stay safe, and stay charged. đź‘Ť
i agree, ive been looking this up and yeah, total ripoff! a 12v 200ah which is equivalent to this is less than $300.
Last edited by h0va4life January 30, 2026 at 11:10 AM.

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Jan 30, 2026 8:30 PM
18 Comments
Joined Jan 2014
NoCarrierJan 30, 2026 8:30 PM
18 Comments
So it's still not clear what the capacity is. How many whrs is this?
2
Jan 30, 2026 9:32 PM
44 Comments
Joined Nov 2011
dyaus7Jan 30, 2026 9:32 PM
44 Comments
Quote from NoCarrier View quoted comment :
So it's still not clear what the capacity is. How many whrs is this?
2048 Wh
Jan 31, 2026 3:54 AM
35 Comments
Joined May 2025
FabulousRoute426Jan 31, 2026 3:54 AM
35 Comments
Quote from h0va4life View quoted comment :
i agree, ive been looking this up and yeah, total ripoff! a 12v 200ah which is equivalent to this is less than $300.
But when you have to get the rest of the parts. + time. Or you can buy a legit one that's backed up and don't have to "hack" anything. I'm all for saving a buck but i don't want to build a shitbox if i can buy it for $50 more already built.
Jan 31, 2026 4:03 AM
1.9K Comments
Joined Nov 2007
h0va4lifeJan 31, 2026 4:03 AM
1.9K Comments
Quote from FabulousRoute426 View quoted comment :
But when you have to get the rest of the parts. + time. Or you can buy a legit one that's backed up and don't have to "hack" anything. I'm all for saving a buck but i don't want to build a shitbox if i can buy it for $50 more already built.
I can see your point. The time really is a non-factor, just go on amazon lol! I guess the savings REALLY kick in once you buy multiple as I would assume you can share battery chargers etc.
Jan 31, 2026 1:10 PM
81 Comments
Joined Aug 2007
xtentialystJan 31, 2026 1:10 PM
81 Comments
Or buy for less at Amazon.

https://a.co/d/5WuIlQI
3
Jan 31, 2026 4:19 PM
81 Comments
Joined May 2010
aznboovieJan 31, 2026 4:19 PM
81 Comments
Quote from xtentialyst View quoted comment :
Or buy for less at Amazon. https://a.co/d/5WuIlQI
Amazon is 1kwh, this one is 2kwh
Jan 31, 2026 4:45 PM
7K Comments
Joined Sep 2013
luckygeckoJan 31, 2026 4:45 PM
7K Comments
The Ugreen Power Roam packs i bought from Wellbots are junk. Wellbots is pushed on here a lot, but the best I can tell it's like six person company. Plus Ugreen has given me pushback on the warranty.

The solar panels are the best deal I've received from them.
Last edited by luckygecko January 31, 2026 at 08:49 AM.

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Jan 31, 2026 5:04 PM
332 Comments
Joined Dec 2021
AwsiDoogerJan 31, 2026 5:04 PM
332 Comments
Quote from xtentialyst View quoted comment :
Or buy for less at Amazon.

https://a.co/d/5WuIlQI
That is Delta 2 extra battery. This listing is Delta 2 Max extra battery. Totally different product

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