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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

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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. 👍
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.

  • people shopping specifically for the Delta 2 Max extra battery (not the older Delta 2 extra battery) because commenters clarify the listing is for the Delta 2 Max version and provide compatibility with DELTA 2 / DELTA Max / DELTA 2 Max.

    AwsiDoogernetstroller

  • people who already own an EcoFlow Delta 2/Delta Max setup and want to expand runtime because this is an extra battery that connects to an existing EcoFlow battery (it doesn't work by itself).

    supergames

  • buyers planning to purchase multiple EcoFlow extra batteries because the savings can "kick in" once you buy more, since you can share battery/charger-related accessories across units.

    h0va4life

  • EcoFlow owners who want a fully supported, ready-to-use expansion instead of DIY wiring because commenters say it's easier to buy a legit, backed-up battery than to "hack" cables or source extra parts and spend time building a setup.

    FabulousRoute426

  • buyers who expect a standalone power source because commenters warn this is an extra battery that must connect to an existing EcoFlow battery and "does not work on its own."

    supergames

  • people who are trying to maximize capacity-per-dollar by comparing to generic 12V batteries because commenters call the deal a "ripoff" when they compare it to a 12V 200Ah alternative priced under $300.

    h0va4life

  • buyers who might accidentally mismatch battery versions or capacity goals because commenters warn that if you buy the wrong linked product (or end up with only half the capacity you wanted), you can effectively waste extra money.

    SeanD1497

  • DIY-inclined shoppers who are open to third-party LiFePO4 setups because commenters argue you should "stop buying manufacturers' extra batteries" and instead use cheaper LiFePO4 batteries connected via solar controllers or DC-DC chargers.

    Mannyforever

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 31, 2026 6:33 PM
1.1K Comments
Joined Mar 2004
netstrollerJan 31, 2026 6:33 PM
1.1K Comments
Dimensions: 464 × 235 × 283 mm (18 × 9 × 11 in)

Weight: 19kg (42lbs)

Capacity: 2048Wh

Output Port: 51.2V, 3200W Max

Battery: LFP chemistry, 3000 cycles to >80% capacity

Compatible with: DELTA 2 / DELTA Max 2000/ DELTA 2 Max
Feb 1, 2026 2:50 PM
4.3K Comments
Joined Apr 2015
SeanD1497Feb 1, 2026 2:50 PM
4.3K Comments
Quote from xtentialyst View quoted comment :
Or buy for less at Amazon.

https://a.co/d/5WuIlQI
Not the same thing. If you don't want half the capacity of this, you just wasted and extra $154 by buying two of the product you linked.
Feb 1, 2026 7:13 PM
6 Comments
Joined Mar 2025
MagentawaveFeb 1, 2026 7:13 PM
6 Comments
Quote from AwsiDooger View quoted comment :
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.
How was there no sales tax at Wellbots? Because you reside in a state with no sales tax?
Feb 1, 2026 7:16 PM
6 Comments
Joined Mar 2025
MagentawaveFeb 1, 2026 7:16 PM
6 Comments
Quote from NoCarrier View quoted comment :
So it's still not clear what the capacity is. How many whrs is this?
You can see all of that on Amazon or at the Ecoflow website but I am fairly certain that it's the same as the D2M which is 2048 watt hours.
Feb 2, 2026 3:36 AM
332 Comments
Joined Dec 2021
AwsiDoogerFeb 2, 2026 3:36 AM
332 Comments
Quote from Magentawave View quoted comment :
How was there no sales tax at Wellbots? Because you reside in a state with no sales tax?
I am in Florida. We have state sales tax.

For whatever reason Wellbots has not charged sales tax on two recent major purchases I made. The other one was a Pecron 3600 in November.

Here is a screen grab from the Wellbots confirmation email:

https://ibb.co/vv6Xntgq
Pro
Feb 2, 2026 4:18 AM
5K Comments
Joined Feb 2006
Tazmania99
Pro
Feb 2, 2026 4:18 AM
5K Comments
What's wrong with your Power Roam? I still have mine sitting in the garage along with the solar panels.

Quote from luckygecko View quoted comment :
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.
Feb 2, 2026 4:24 AM
7K Comments
Joined Sep 2013
luckygeckoFeb 2, 2026 4:24 AM
7K Comments
Quote from Tazmania99 View quoted comment :
What's wrong with your Power Roam? I still have mine sitting in the garage along with the solar panels.



'Sitting in the garage' there's your answer.


I was just without power for a week. Some of them would fake carge impossiblely fast to 100%. Then die in 30 min under a light load. Some will just randomly turn off AC outlet, even with power save turned off. The 1024wh ones refuse to charge off gas generator. They start to pull load, the generator says slightly, they try again instead of lowering charge load and just cycle. My Jackeries worked just fine.

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