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expiredphoinix | Staff posted Jul 3, 2026 10:58 AM

seaistar 30W 50000mAh Portable Charger USB-C Power Bank (Gray)

$15

$50

70% off
+ Free S&H w/ Amazon Primeat Woot!
30K Views
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Deal Details
Woot! has seaistar 30W 50000mAh Portable Charger USB-C Power Bank (Gray) for $14.99. Shipping is free for Amazon Prime Members (must log in with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • Massive Capacity: The Seaistar portable charger features a high-density polymer battery, providing 11 charges for an iPhone 13 Pro and 8 charges for a Samsung Galaxy S22. Most smartphones can get over 9 full charges, making it ideal for camping, hiking, vacation, and travel.
  • Multiple Outputs & Inputs: Equipped with 4 USB output ports, 1 USB-C port (supporting both input and output), and 1 Micro USB input port, this power bank can charge up to 4 devices simultaneously. It's compatible with iPhones, iPads, Android devices, laptops, and other USB-powered electronics.
  • Fast Charging: The power bank supports PD 30W output and QC4.0 for quick charging, delivering 61% charge to your iPhone in just 30 minutes. It can be fully recharged in 8 hours with a 5V 3.0A charger (not included).
  • Wide Compatibility: An LED display shows the remaining battery percentage, ensuring efficient power management. Compatible with a wide range of devices, including smartphones, tablets, laptops, and fitness trackers.
  • Safety Features: Built with quality batteries and a comprehensive multi-protect safety system, it includes safeguards against overcharging, short circuits, overcurrent, overvoltage, and temperature control, ensuring the safety of your devices and the charger itself.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Our research indicates that this deal is $16.63 less (52.59% savings) than the next best available price from a reputable merchant with prices starting at $31.62 at the time of this posting.
  • About this Store:
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Woot! has seaistar 30W 50000mAh Portable Charger USB-C Power Bank (Gray) for $14.99. Shipping is free for Amazon Prime Members (must log in with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • Massive Capacity: The Seaistar portable charger features a high-density polymer battery, providing 11 charges for an iPhone 13 Pro and 8 charges for a Samsung Galaxy S22. Most smartphones can get over 9 full charges, making it ideal for camping, hiking, vacation, and travel.
  • Multiple Outputs & Inputs: Equipped with 4 USB output ports, 1 USB-C port (supporting both input and output), and 1 Micro USB input port, this power bank can charge up to 4 devices simultaneously. It's compatible with iPhones, iPads, Android devices, laptops, and other USB-powered electronics.
  • Fast Charging: The power bank supports PD 30W output and QC4.0 for quick charging, delivering 61% charge to your iPhone in just 30 minutes. It can be fully recharged in 8 hours with a 5V 3.0A charger (not included).
  • Wide Compatibility: An LED display shows the remaining battery percentage, ensuring efficient power management. Compatible with a wide range of devices, including smartphones, tablets, laptops, and fitness trackers.
  • Safety Features: Built with quality batteries and a comprehensive multi-protect safety system, it includes safeguards against overcharging, short circuits, overcurrent, overvoltage, and temperature control, ensuring the safety of your devices and the charger itself.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Our research indicates that this deal is $16.63 less (52.59% savings) than the next best available price from a reputable merchant with prices starting at $31.62 at the time of this posting.
  • About this Store:
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff

Community Voting

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+60
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32 Comments

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Jul 3, 2026 11:35 AM
298 Comments
Joined May 2021
CoolFog370Jul 3, 2026 11:35 AM
298 Comments
If it had wireless charging, i'd be all over this!
2
Jul 3, 2026 12:24 PM
1.3K Comments
Joined May 2018
Oil_BurnerJul 3, 2026 12:24 PM
1.3K Comments

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

Micro USB ? Really?
2
1
Jul 3, 2026 1:14 PM
13 Comments
Joined Jun 2026
KneesGrowsJul 3, 2026 1:14 PM
13 Comments

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No way this thing is 50000mah. If it does have 50000mah i bet it charges slow.
1
1
Expert
This user is an Expert in Home & Home Improvement
Jul 3, 2026 1:37 PM
7.5K Comments
Joined Oct 2014
firebirdude
Expert
This user is an Expert in Home & Home Improvement
Jul 3, 2026 1:37 PM
7.5K Comments
I wonder if it's a misprint? Slid and extra 0 in there?
1
Jul 3, 2026 1:42 PM
525 Comments
Joined Aug 2007
gerrytwoJul 3, 2026 1:42 PM
525 Comments

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Quote from KneesGrows :
No way this thing is 50000mah. If it does have 50000mah i bet it charges slow.
Amazon review: "This charger takes forever to recharge, and to charge a device. Definitely would not recommend purchasing."
6
1
Jul 3, 2026 1:50 PM
107 Comments
Joined Dec 2024
HighFlightJul 3, 2026 1:50 PM
107 Comments
50k? Are they sure?
1
Jul 3, 2026 2:21 PM
2.1K Comments
Joined Feb 2021
AquaGalley8616Jul 3, 2026 2:21 PM
2.1K Comments
ok, I am researching this, could be good.
I did find a youtube review made about 2 years ago on this unit.
Hopefully, we can get a feel for this unit. Not many reviews on Amazon on it under 50 reviews total.
https://www.youtube.com/watch?v=8frE-XxISQA

( you might have to open the link in private browser to see it, I had to do this, and I made the link).

( update) I watched the video (I posted it first, saw a few minutes of it and it started off good. But he didn't recommend it, thought it was almost a "scam".

What do you guys think about it?
Last edited by AquaGalley8616 July 3, 2026 at 07:30 AM.
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Jul 3, 2026 2:31 PM
247 Comments
Joined May 2024
FeistyWing507Jul 3, 2026 2:31 PM
247 Comments
Certainly, it is fake 50000mah
1
Jul 3, 2026 2:33 PM
78 Comments
Joined Nov 2017
konasunsetsJul 3, 2026 2:33 PM
78 Comments
Quote from FeistyWing507 :
Certainly, it is fake 50000mah
There's zero chance this is 50k mah. MAYBE 20K
1
Jul 3, 2026 2:34 PM
408 Comments
Joined May 2014
jm89Jul 3, 2026 2:34 PM
408 Comments
In for 2. One USB C port is all I really need. 30W PD is pretty good. Massive capacity & over the flight mAh limit, bit I have another battery pack for that. This will be great for a car trip.

And there are 2 inputs: the USB C is the one that you should probably use.
Last edited by jm89 July 8, 2026 at 08:11 PM.
Jul 3, 2026 2:36 PM
2.1K Comments
Joined Feb 2021
AquaGalley8616Jul 3, 2026 2:36 PM
2.1K Comments
Quote from FeistyWing507 :
Certainly, it is fake 50000mah
in the youtube video I posted, he had all types of advanced equipment to test it, ... and stuff I don't understand. But overall he thought it was a "scam". Unless others understand more of the data from his equipment in testing this.

can you guys suggest a better one for us.
I did buy the Anker 537 power bank from Woot a few weeks back, and the guys on slick deals seemed to like it, I guess you can search slickdeal deals the last month or so to get their views on the anker.
Jul 3, 2026 3:10 PM
3.3K Comments
Joined May 2006
FarmeroakJul 3, 2026 3:10 PM
3.3K Comments

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Quote from AquaGalley8616 :
in the youtube video I posted, he had all types of advanced equipment to test it, ... and stuff I don't understand. But overall he thought it was a "scam". Unless others understand more of the data from his equipment in testing this.

can you guys suggest a better one for us.
I did buy the Anker 537 power bank from Woot a few weeks back, and the guys on slick deals seemed to like it, I guess you can search slickdeal deals the last month or so to get their views on the anker.
Thanks for the video. Tl;dr: The battery bank is actually somewhere between 20,000-30,000mah, and he could only pull about 20W in or out of it, not 30W. Still a decent value imo.
1
Jul 3, 2026 3:14 PM
954 Comments
Joined Feb 2009
SwennyJul 3, 2026 3:14 PM
954 Comments
In case anyone was wondering, this is too large for bringing on a plane. If it is 50,000mAh, the Wh would be 185
Jul 3, 2026 3:17 PM
4K Comments
Joined Dec 2008
konoplyaJul 3, 2026 3:17 PM
4K Comments
I have the 10k version of this, heavy as shit. Takes forever to recharge unless you use the provided cable which is like 10 inches long. Still takes a while though. Charging devices isn't that bad, it charges my phone like my factory charger
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Jul 3, 2026 3:26 PM
1.1K Comments
Joined Nov 2011
maxblockmJul 3, 2026 3:26 PM
1.1K Comments
Quote from Swenny :
In case anyone was wondering, this is too large for bringing on a plane. If it is 50,000mAh, the Wh would be 185
And for anyone else wondering, the airline limit of 99wh would be 26,757mAh.

https://www.inchcalculator.com/ma...alculator/ (voltage for lithium cells is 3.7)

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