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How many watt-hours is this? Airlines are restricting lithium batteries on-board to lower capacities. Southwest only allows 100 watt hour batteries in the cabin effective 04/20/26. So nice of them to use a different metric for restrictions than all power banks advertise!
EDIT: Google says: "A standard 20,000mAh power bank typically contains 74 Watt-hours (Wh) of energy." Same question shows a 26,000mAh power bank is still just under 100 watt hours.
How many watt-hours is this? Airlines are restricting lithium batteries on-board to lower capacities. Southwest only allows 100 watt hour batteries in the cabin effective 04/20/26. So nice of them to use a different metric for restrictions than all power banks advertise!EDIT: Google says: "A standard 20,000mAh power bank typically contains 74 Watt-hours (Wh) of energy." Same question shows a 26,000mAh power bank is still just under 100 watt hours.
The watt-hour is the measure that's actually meaningful for portable batteries, which is why they use it. "Capacity" is kind of meaningless since voltage is a central part of the equation. Voltage of internal batteries x capacity (20000 x 3.7)/1000, but only for Li-Ion. LiFePO4 batteries would be 3.2V, so you could take a 30000 mAh on board. If they just restricted you based on mAh, they'd have to have different values based on the type of battery (e.g. NiMH is 1.2v)
PS Google is apparently assuming "standard" is Li-Ion
Last edited by Ion Control May 8, 2026 at 10:29 AM.
How is this compared to the Anker 737 that is 24000 mah? I have the Anker one and for my Dell XPS 15 9520 laptop, if the laptop is fully charged at 100% and the Anker is at 100% and I unplug my laptop from the outlet and connect the Anker to it, I seem to get 1 hour 5 minutes on the Anker powerbank before it goes to 0%. This ugreen is at 20000 mah so it would last 55 minutes or so?
However, the price being $57 so with tax that is about $63 or so. I paid more than $100 I believe for the Anker 737. So this is a good deal compared to the Anker? The thing is the 130W thing doesn't matter for my Dell XPS right since non-dell powerbanks seem to do max 90w anyway?
Doe this last long in terms of years? I had an Anker 737 and it stopped working and then I let Anker know about this and they sent me a replacement one. I didn't use the Anker more than probably 10 times total at most. So this ugreen even if it has no issues will stop having a charge after so and so uses? What if you have it for years but rarely use it? Is it eventually going to have issues? Now if you use it daily and get the battery to 20% or 0% almost every day, then it probably wouldn't last longer than a year at the most right? But if you only use it occasionally and say get it to 0% maybe a few times a month, how long would it last? What about using it several times a month where it gets to 20% and then you stop using it? I always heard you wear out laptop batteries if you get it to 0% or less than 20% or so many times. So this applies to these powerbanks? So retail price for this wouldn't be worth it right and Anker 737 is better?
I have an older Anker 1339 (9.6k mah, 65W) and like it. Lower capacity and slower charger, but it's also smaller and cheaper. UGREEN is upping their game and is giving Anker a fight in the market!
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EDIT: Google says: "A standard 20,000mAh power bank typically contains 74 Watt-hours (Wh) of energy." Same question shows a 26,000mAh power bank is still just under 100 watt hours.
The watt-hour is the measure that's actually meaningful for portable batteries, which is why they use it. "Capacity" is kind of meaningless since voltage is a central part of the equation. Voltage of internal batteries x capacity (20000 x 3.7)/1000, but only for Li-Ion. LiFePO4 batteries would be 3.2V, so you could take a 30000 mAh on board. If they just restricted you based on mAh, they'd have to have different values based on the type of battery (e.g. NiMH is 1.2v)
PS Google is apparently assuming "standard" is Li-Ion
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However, the price being $57 so with tax that is about $63 or so. I paid more than $100 I believe for the Anker 737. So this is a good deal compared to the Anker? The thing is the 130W thing doesn't matter for my Dell XPS right since non-dell powerbanks seem to do max 90w anyway?
Doe this last long in terms of years? I had an Anker 737 and it stopped working and then I let Anker know about this and they sent me a replacement one. I didn't use the Anker more than probably 10 times total at most. So this ugreen even if it has no issues will stop having a charge after so and so uses? What if you have it for years but rarely use it? Is it eventually going to have issues? Now if you use it daily and get the battery to 20% or 0% almost every day, then it probably wouldn't last longer than a year at the most right? But if you only use it occasionally and say get it to 0% maybe a few times a month, how long would it last? What about using it several times a month where it gets to 20% and then you stop using it? I always heard you wear out laptop batteries if you get it to 0% or less than 20% or so many times. So this applies to these powerbanks? So retail price for this wouldn't be worth it right and Anker 737 is better?
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