Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expiredDavid_David posted Jun 15, 2025 7:16 AM

EcoFlow DELTA 3 Extra Battery - $449.99

$450

$600

25% off
HSN
8K Views
Visit HSN
Deal Details
Lowest price ever seen for THIS product - Ecoflow delta 3 extra battery, plug and play seamless add on for all EF delta 3 power stations.
Compare at 599.99 from Ecoflow direct.
Requires main EF power station and includes the right angle extra battery port cable.

Not to be confused with a DIY external battery.

https://www.hsn.com/products/ecof...y/23452121
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Lowest price ever seen for THIS product - Ecoflow delta 3 extra battery, plug and play seamless add on for all EF delta 3 power stations.
Compare at 599.99 from Ecoflow direct.
Requires main EF power station and includes the right angle extra battery port cable.

Not to be confused with a DIY external battery.

https://www.hsn.com/products/ecof...y/23452121

Community Voting

Deal Score
+10
Good Deal
Visit HSN

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

7 Comments

Sign up for a Slickdeals account to remove this ad.

Jun 15, 2025 2:15 PM
884 Comments
Joined Feb 2012
DaShadow577Jun 15, 2025 2:15 PM
884 Comments
Does it work with delta 2? Any benefits over delta 2 extra battery?
Original Poster
Pro
Jun 15, 2025 2:28 PM
320 Comments
Joined Mar 2025
David_DavidJun 15, 2025 2:28 PM
Original Poster
Pro
320 Comments
Quote from DaShadow577 :
Does it work with delta 2? Any benefits over delta 2 extra battery?
yes D3 EB works with D2 (not D2Max) but other than size, and the right angle connection cable, D2 EB can generally be had for less $ and physical/style match with D2...
1
Jun 16, 2025 6:41 AM
197 Comments
Joined Mar 2018
PlutomaniaJun 16, 2025 6:41 AM
197 Comments
Yes, it's the lowest I've seen too, but it's still way more expensive per watt than a typical LiFePO4 battery. EcoFlow is making us pay 3 times the market rate. One can buy a 48V 50Ah battery for the same money, but it will not charge from the EcoFlow.
Jun 16, 2025 2:01 PM
884 Comments
Joined Feb 2012
DaShadow577Jun 16, 2025 2:01 PM
884 Comments
Quote from Plutomania :
Yes, it's the lowest I've seen too, but it's still way more expensive per watt than a typical LiFePO4 battery. EcoFlow is making us pay 3 times the market rate. One can buy a 48V 50Ah battery for the same money, but it will not charge from the EcoFlow.
Any links to make a eternal battery DIY? That you could recharge off of?
Jun 16, 2025 2:58 PM
128 Comments
Joined Oct 2021
SmartSeed8854Jun 16, 2025 2:58 PM
128 Comments
Quote from DaShadow577 :
Any links to make a eternal battery DIY? That you could recharge off of?
You can use the Ecoflow Alternator. https://youtu.be/ReGWks3ENc4
Jun 16, 2025 4:55 PM
290 Comments
Joined Sep 2014
ComcastratedJun 16, 2025 4:55 PM
290 Comments
Quote from DaShadow577 :
Any links to make a eternal battery DIY? That you could recharge off of?
It''s not complicated. I'm using a lifepo4 battery, a lifepo4 battery charger, and a m8 to xt60i cable from the battery to the ecoflow solar input. The higher the voltage of the battery, the faster it charges the ecoflow. I'm using a 12V battery, which is good for my needs, but charges the ecoflow at only 200w. I believe a 48V would max out at 500w input. There are a million videos on youtube about all this.
Jun 21, 2025 7:00 PM
6.7K Comments
Joined Dec 2004
CaleoJun 21, 2025 7:00 PM
6.7K Comments
Quote from Comcastrated :
It''s not complicated. I'm using a lifepo4 battery, a lifepo4 battery charger, and a m8 to xt60i cable from the battery to the ecoflow solar input. The higher the voltage of the battery, the faster it charges the ecoflow. I'm using a 12V battery, which is good for my needs, but charges the ecoflow at only 200w. I believe a 48V would max out at 500w input. There are a million videos on youtube about all this.
A 48V should max out the 500W input, yes, provided you have the XT60i cable. The 'i' part is important, it signifies that it has the extra pin that the Ecoflow uses as a green light to pull 15A, instead of just 8A, which is meant to protect fuses when using with cigarette sockets in cars (typically 100-120W).

Nice thing about the D3 Plus is that it has 2x 500W solar inputs, so if you want to run it off one 48V battery you can pretty easily, with up to around 1000W input from it (which is usually no sweat for a 48V battery setup).
Basically just need a 'y' adapter', ideally some 30A+ (over)rated wire, and some fuses for safety. There is some amount of loss doing this though, since it's being done via the D3P's MPPT charge controller(s). Not a terrible loss (maybe up to 10%), but I think their own proprietary batteries don't lose as much.

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

Popular Deals

Trending Deals