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expiredItsSoCheap | Staff posted Aug 4, 2025 9:41 AM

20,000mAh Monocrystalline Solar Portable Power Bank w/ Built-in cables and LED Light: Single $30.99, 2-Pack $53.99 $30.99 + Free Shipping w/ Prime

$31

$70

55% off
Woot!
14 Comments
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Deal Details
Woot [woot.com] has 20,000mAh Monocrystalline Solar Portable Power Bank w/ Built-in cables and LED Light: Single $30.99, 2-Pack $53.99 for $30.99. Shipping is free w/ Prime. Otherwise shipping is $6.
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About the Poster
Woot [woot.com] has 20,000mAh Monocrystalline Solar Portable Power Bank w/ Built-in cables and LED Light: Single $30.99, 2-Pack $53.99 for $30.99. Shipping is free w/ Prime. Otherwise shipping is $6.

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14 Comments

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Aug 4, 2025 9:46 AM
41 Comments
Joined Sep 2007
SonikkuBlastAug 4, 2025 9:46 AM
41 Comments
that's a lot of zeros
Original Poster
Pro
Deal Hunter
Aug 4, 2025 9:56 AM
6.3K Comments
Joined Sep 2014
ItsSoCheapAug 4, 2025 9:56 AM
Original Poster
Pro
Deal Hunter
6.3K Comments
Quote from SonikkuBlast :
that's a lot of zeros

lol, just corrected - thanks for the heads up laugh out loud
Aug 4, 2025 2:07 PM
76 Comments
Joined Jul 2019
AdamK1012Aug 4, 2025 2:07 PM
76 Comments
I have no use for this...but it looks so damn fun to own it. I'm imagining all the doomsday scenarios I won't be in
1
2
Aug 4, 2025 6:45 PM
156 Comments
Joined Dec 2008
mjawtAug 4, 2025 6:45 PM
156 Comments
5V x 2.1A = 10.5 watts. This will take take a little less than two and a half hours to charge a standard 5,000mAh battery from 0% to 100%.
1
Aug 4, 2025 7:06 PM
330 Comments
Joined Oct 2008
SilentAgnosticAug 4, 2025 7:06 PM
330 Comments
Does anyone even remotely know how many watts the built-in solar panel is (aka how long to charge the battery) ?
Aug 4, 2025 9:16 PM
102 Comments
Joined Dec 2009
supergecko007Aug 4, 2025 9:16 PM
102 Comments
Quote from SilentAgnostic :
Does anyone even remotely know how many watts the built-in solar panel is (aka how long to charge the battery) ?
I believe the solar is a trickle charge and not feasible for fully charging the battery from empty.
Aug 4, 2025 9:22 PM
356 Comments
Joined Aug 2017
PulpMagicAug 4, 2025 9:22 PM
356 Comments
Quote from SilentAgnostic :
Does anyone even remotely know how many watts the built-in solar panel is (aka how long to charge the battery) ?
If it is similar to a different power bank I own that is about the same physical size, it is probably 300 mA and would take days in the full sunlight to recharge the battery fully depleted. It will help a little bit if camping when full sunlight is available. O.3 A @ 3.7 V = 1.11 watts X 8 hours 8.88 / 3.7 = 2400 mAh charge, presuming it is 3.7 V, not 5 V but even then, there is loss due to voltage conversion for charging the built-in battery. IMHO, the battery packs that have 4 or 5 fold out panels attached have at least a decent chance of recharging a large battery in full sunlight.

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Aug 5, 2025 1:31 AM
36 Comments
Joined Aug 2009
ckhongAug 5, 2025 1:31 AM
36 Comments
I got one of these about 3 years ago. Battery swelled up after about two years.
Aug 5, 2025 4:33 PM
29 Comments
Joined Oct 2017
MurderMostFowlAug 5, 2025 4:33 PM
29 Comments

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

Quote from ckhong :
I got one of these about 3 years ago. Battery swelled up after about two years.
I don't doubt that. I am sure it does not have good battery heat management and being that you are literally forced to put it in direct sunlight for hours, they're already creating a poor environment.
1
Aug 6, 2025 2:02 AM
3.5K Comments
Joined Aug 2007
graphixvAug 6, 2025 2:02 AM
3.5K Comments
Gimmick ALERT
Aug 6, 2025 12:16 PM
10.3K Comments
Joined Nov 2013
AdelleyAug 6, 2025 12:16 PM
10.3K Comments
Quote from MurderMostFowl :
I don't doubt that. I am sure it does not have good battery heat management and being that you are literally forced to put it in direct sunlight for hours, they're already creating a poor environment.
Lol can you get a usb fan plugged into this to cool it down while charging? Haha
1
Aug 6, 2025 12:38 PM
13 Comments
Joined Aug 2025
Slick-EditorAug 6, 2025 12:38 PM
13 Comments
durable for outdoors?
Aug 10, 2025 12:15 AM
259 Comments
Joined Aug 2022
cornerblitz13Aug 10, 2025 12:15 AM
259 Comments
Quote from AdamK1012 :
I have no use for this...but it looks so damn fun to own it. I'm imagining all the doomsday scenarios I won't be in
I'm gonna invent an app that will whack all these idiots in the face that thumb down on everything humorous and everything they don't agree with
Aug 10, 2025 12:16 AM
259 Comments
Joined Aug 2022
cornerblitz13Aug 10, 2025 12:16 AM
259 Comments
Quote from SilentAgnostic :
Does anyone even remotely know how many watts the built-in solar panel is (aka how long to charge the battery) ?
Dunno the exact number but I do believe it takes 19 weeks to fully charge that battery using solar

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