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frontpageTattyBear | Staff posted Aug 11, 2025 02:46 PM
frontpageTattyBear | Staff posted Aug 11, 2025 02:46 PM

OUPES Mega 3 3600W 3072Wh Portable Power Station + 2048Wh Extra Battery + 6 Yr. Warranty

+ Free Shipping

$1,606

$3,099

48% off
OUPES
18 Comments 7,475 Views
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Deal Details
Oupes has OUPES Mega 3 3600W 3072Wh Portable Power Station + 2048Wh Extra Battery + 5+1 Yr. Warranty (register/upgrade warranty here) for $1889 - $283.35 w/ coupon code OPSM3 (applied in checkout) = $1605.65. Shipping is free.

Note: B2 battery is auto added to cart.

Thanks to Deal Hunter TattyBear for finding this deal.

Features:
  • 3,072Wh Capacity | 3,600W AC Pure Sine Wave Inverter (7,000W Surge)
  • Fully recharge in 1 hour with 3,900W Max. Input (AC+solar)
  • Expandable Up to 15.36kWh with B2 * 6
  • Seamless UPS Backup (2,200W Max)
  • Adjustable Recharge (900W-1,800W AC input)
  • LiFePO4 Battery with 3,500+ Life Cycles to 80%
  • 16 Outputs For Multiple Devices
  • Smart Control & Monitor in OUPES App

Editor's Notes

Written by Corwin | Staff

Original Post

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Oupes has OUPES Mega 3 3600W 3072Wh Portable Power Station + 2048Wh Extra Battery + 5+1 Yr. Warranty (register/upgrade warranty here) for $1889 - $283.35 w/ coupon code OPSM3 (applied in checkout) = $1605.65. Shipping is free.

Note: B2 battery is auto added to cart.

Thanks to Deal Hunter TattyBear for finding this deal.

Features:
  • 3,072Wh Capacity | 3,600W AC Pure Sine Wave Inverter (7,000W Surge)
  • Fully recharge in 1 hour with 3,900W Max. Input (AC+solar)
  • Expandable Up to 15.36kWh with B2 * 6
  • Seamless UPS Backup (2,200W Max)
  • Adjustable Recharge (900W-1,800W AC input)
  • LiFePO4 Battery with 3,500+ Life Cycles to 80%
  • 16 Outputs For Multiple Devices
  • Smart Control & Monitor in OUPES App

Editor's Notes

Written by Corwin | Staff

Original Post

Community Voting

Deal Score
+17
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Get Deal at OUPES

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17 Comments

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Aug 11, 2025 03:05 PM
54 Posts
Joined Jul 2018
Justinf3175Aug 11, 2025 03:05 PM
54 Posts
if you need a battery this is an outstanding deal
1
Aug 11, 2025 03:43 PM
3,132 Posts
Joined May 2006
nicedogAug 11, 2025 03:43 PM
3,132 Posts
81.89% efficiency, FYI.
1
Pro
Aug 11, 2025 07:55 PM
603 Posts
Joined Jul 2019
WoodSlayR
Pro
Aug 11, 2025 07:55 PM
603 Posts
Quote from nicedog :
81.89% efficiency, FYI.
Which puts this at right about normal for these type power stations.

Grok says : The average efficiency of portable power stations typically ranges from 80% to 85%, depending on the model and battery type. Factors such as energy conversion losses, inverter efficiency, and battery chemistry (e.g., lithium-ion or LiFePO4) can affect this range.
Last edited by WoodSlayR August 11, 2025 at 12:58 PM.
2
9
Yesterday 05:02 AM
20 Posts
Joined Jan 2018
marianlauraYesterday 05:02 AM
20 Posts
It's UL certified?
Yesterday 05:46 AM
436 Posts
Joined Apr 2013
KamiNoYamiYesterday 05:46 AM
436 Posts
Thoughts on this vs mega 5? It's $150 more but all in one for similar capacity.
Yesterday 06:50 AM
31 Posts
Joined Jan 2023
StrongName8719Yesterday 06:50 AM
31 Posts
Quote from nicedog :
81.89% efficiency, FYI.
Yeah, that sucks. Mine are around 95%.
Yesterday 11:50 AM
568 Posts
Joined Feb 2012
sphawk88Yesterday 11:50 AM
568 Posts
Any nerd have the correct answer whether this is on par or considerably worse than the current HD ecoflow pro deal?
2

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Yesterday 01:35 PM
417 Posts
Joined Nov 2011
LeakyAneurismYesterday 01:35 PM
417 Posts
Quote from sphawk88 :
Any nerd have the correct answer whether this is on par or considerably worse than the current HD ecoflow pro deal?
Read the reviews on the DIY Solar Forum. I did. This is not in my cart anymore.
Yesterday 03:40 PM
442 Posts
Joined Jan 2004
francoisYesterday 03:40 PM
442 Posts
Quote from KamiNoYami :
Thoughts on this vs mega 5? It's $150 more but all in one for similar capacity.
I have mega 3 and it's already large. I fear mega 5 will be a bitch to haul around.
Yesterday 03:49 PM
442 Posts
Joined Jan 2004
francoisYesterday 03:49 PM
442 Posts

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

I have mega 3 and b2 purchased separately on ebay.
The battery comes with the special cable to connect to the mega 3.
Mega 3 is big and has wheels and handles. B2 has two handles to carry.
B2 can be put on top. When connected, with their app, you can see the charge status of both.
It charges from 120 V at full speed (like 15 A) or half speed so it fills up in under 2 hours i think.
When charging from panels, if you plan to charge both, connect the panels through anderson plug to the B2. When it is full, the mega 3 will receive the electricity and charge. If you plug the panels to the mega 3, when full it will not to charge the b2.
I have contacted their tech support a couple of times with thechncial questions and they answer within a day with a complete answer.
When connecting panels, it likes a higher voltage (compared to other batteries that don't want more than 30v) so it's ok to put up to six 240W panels in series. Just make sure no panel is shaded. so no need to think i can use 1, 2 or 4 or 6 but not 3 or 5 panels. (as you would if you were connecting panels in parallel)
TL;DR: the tech seems good. Tech support is responsive. price is competitve.
2
Yesterday 04:22 PM
436 Posts
Joined Apr 2013
KamiNoYamiYesterday 04:22 PM
436 Posts
Quote from francois :
I have mega 3 and it's already large. I fear mega 5 will be a bitch to haul around.
Hmm that's true. I think I saw the mega 5 is like 100 lbs but it does have wheels. Hmm
Yesterday 06:17 PM
442 Posts
Joined Jan 2004
francoisYesterday 06:17 PM
442 Posts
Quote from KamiNoYami :
Hmm that's true. I think I saw the mega 5 is like 100 lbs but it does have wheels. Hmm
And if you have two locations, you can have two mega 3 and a b2 and move the b2 for extra capacity when you need it.
The Mega 5 is the only one that takes the b5. The b2 also works on smaller mega 1 and 2 as well as titan 3.
If you need more you can use multiple b2 in series.
2
Yesterday 07:26 PM
107 Posts
Joined Aug 2011
a_gertYesterday 07:26 PM
107 Posts
Looks like a great deal and some YouTube videos called out the benefit of separate solar input on the expansion B2 batteries which is nice. I've been shopping for a backup with something in this range for a while and finally pulled the trigger, thanks op.
Yesterday 09:38 PM
55 Posts
Joined Mar 2011
skank2dis1Yesterday 09:38 PM
55 Posts
Quote from sphawk88 :
Any nerd have the correct answer whether this is on par or considerably worse than the current HD ecoflow pro deal?
What deal does HD have? I see the Delta Pro, but that uses older battery technology. I think the Oupes has the extra battery which is pretty cool. Oupes just doesn't have the same brand recognition which is making me have a hard time pulling the trigger.

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Yesterday 10:03 PM
11,396 Posts
Joined May 2007
superslickzYesterday 10:03 PM
11,396 Posts
No 240v output option. There have been better deals that has ability to do 240v.

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