A solid deal for a high-end powerbank capable of single port 140w charging.
Note to select the correct option (Color: 25000mAh)
145W is so specific that it seems believable
Max output - C1+C2 is 100W + 45W
Another handy option for some uses is that this model also does 140W (28V, 5A) out from C1 (single port output).
Great deal. This is an excellent power bank. And I think this is the cheapest I've seen it.
can this one be used as a ups for something like a pi?
I explored this use case years ago and decided against using power banks as a UPS. Too many factors that can go wrong.
https://goughlui.com/2021/09/03/note-potential-issues-of-usi…
This might be a good alternative though I have not tested it myself:
https://www.aliexpress.us/item/1005006105485607.html?spm=a2g…
Oooh nice nice price on that module. I have used similar inline between a power bank that does passthrough, but isn't a UPS (brief output disconnect on charger connect / disconnect) and the load, to get UPS functionality, and long run time.
The power bank still sits at full charge most of the time which increases wear, but that's less of an issue when using a cheap option, such as the recet bargain Baseus 30,000mAh power banks.
Yep - in my testing, there is no noticeably loss of output power from C2 when charging is connected / disconnected via C1.
I happened to have the gear setup, so double checked with 5V, 3A from C2 to a load tester (I had previously only examined higher voltages). The power bank maintains the output when the input loses power, and reconnects. The same appears to be true when using the USB A port as the output.
I have only checked this at a load tester level, so have not investigated with an oscilloscope to see if rather than maintaining a continuous output, there is a very quick switch that results in a very brief loss of power. But even if that is the case, it's fast enough the load tester doesn't see any voltage or current drop, and I can't imagine the Pi will have an issue.
Keep in mind that while this works as a UPS, it does keep the battery fully charged, which slightly increases battery wear. I have not opened my power bank, so have not logged the exact characteristics of how it maintains charge. Likely once fully charged, it maintains the cells at a float voltage, so ongoing battery wear from being fully charged won't be especially problematic.
Depending on your usage case, then there may be more cost effective ways to give UPS functionality if you like to tinker. Such as a module like the one kizzaaa linked.
The other option I have used is a basic single 18650 UPS module (similar to the one linked), which is connected to power bank that does pass through, but interrupts the power when charging is lost.
Such as a recent Baseus 30,000 mAh power bank deal, which cost $22. I tested it where I used it inline between the wall charger, and a 18650 UPS module, which was then plugged into a camera. The 18650 module provided UPS functionality, but only a short run time. But after power loss on the charger side, the power bank cuts out for a second, but then starts charging the UPS module again, and give days of run time if needed. No matter how often the charger cuts in and out (I also tested it with solar charging) the UPS module maintains power to the camera. All the parts cost under $30.
I know there's a good number of legitimate companies that sell on AliExpress but for some reason buying from there still makes me a bit nervous lol. Something to get over I guess. I do wonder how different vendors handle warranties though, probably a mixed experience on that front I'd imagine. Sweet looking deal though in comparison to the equivalent Anker.
Aliexpress is basically warranty -free.
You might be lucky with a PayPal claim if you take that route.
It's the Ugreen official store, so you'd have no trouble dealing directly with Ugreen for warranty. Still likely requires jumping through hoops to prove the issue, but I don't think there would be an issue getting them to honour the 2 year warranty.
"dear sir, please send me a video of it not charging"
Can we carry 145W powerbank in flight ?
145W is the output power and not the measurement you're looking for. Without airline approval anything up to 100Wh is fine. 100-160Wh requires airline approval.
25000 x 3.7 / 1000 = 92.5Wh
This will be no issue taken onboard airlines in carry on.
Can it be used and charged at the same time? And does anyone know if the other usb ports reset when unplugging charger?
Yep it can be used and charged at the same time (passthrough). And no, it does not reset the USB ports when the charger is plugged in and out, so it can be used as a UPS.
I have not stuck it on an oscilloscope to check for very fast port resets, but I can't see any drop out on my capacity tester, and my load tester at 100W is unaffected.
I’ve got a number of UGreen stuff they are abit hit and missed. How do I know/check this is not dodgy like HeyMix? Hmm
Ugreen are the manufacturer for nearly all of their own products, while Heymix are just OEM products from various factories with their own logo slapped on. Searching a Heymix model will often show you results for other brands and generics.
Uh oh. I just bought 3 heymix power boards. Should I be concercned?
Go through all the photo reviews for the one you purchased and make the call. Perhaps use a continuity test to make sure the ones you get are wired correctly.
So who knows mathematics? My laptop has a 99Wh battery. If my laptop went flat and I plugged in this power bank, how long would my laptop last until the power bank goes flat?
If my laptop went flat and I plugged in this power bank, how long would my laptop last until the power bank goes flat?
That’s a trick question, no-one knows the answer until you tell us how much power your laptop uses while it’s on. Could be 15W, could be 280W.
If you were wondering what percentage it’ll recharge your laptop’s 99Wh battery to, assuming the laptop is off, then probably around 70% accounting for efficiency losses.
"If you were wondering what percentage it’ll recharge your laptop’s 99Wh battery to, assuming the laptop is off, then probably around 70% accounting for efficiency losses."
worth noting I am pretty sure total Wh transferred decreases noticeably at higher watts for charging. e.g. charging at 15w you will likely get 70% of 90Wh (Ugreen spec) but charging at 140w you will likely get noticeably less.
Assuming your laptop is off, it'll charge the battery to around 80%. Then the laptop will last however long it'll normally last with an 80% battery… You tell us.
Plugging these in when it's running tends to make laptops get excited and turn stuff up to max, seeing as it appears to be on mains power. So if you need the longest run time, don't do that.
How long does the laptop run for on it's own battery? The power bank will give 70 - 80% of that run time.
I've had good experience with ugreen stuff. I have 4 of the 100w gan desk cchargers
Looks good, ordered.
can't remember is this good for airport?
I don't think you can run an airport off this
I think this one on Kickstarter is better: https://www.kickstarter.com/projects/wonderwatt/wonderwatt-a… though you have to wait to Feb next year
uh one thing I noticed which I do not want on my powerbank.. is an Arc lighter!! what happens when it's in your bag and accidentally pressing down on that button? best case burns a hole in your bag. worst case there is some scrunched up lint or receipt there. fire.
but I guess your username checks out then. 🙂
also kickstarter?? to prevent disappointment it's a good idea to expect that Feb 2024 to be delayed by 6 to 12 months.
This power bank will only deliver 100w up to 70% charge, after which it delivers 50w. Source: https://youtu.be/WFkNCLrx96U?si=EdSG6BQyqhSPq9Xg&t=160
If you need continuous 100w, get the ZMI QB826G when that goes on sale. It's a great power bank.
That one in the video looks different (only 100w from c1 port vs this 140w). Not sure how that would affect results but thought it’s worth mentioning.
Good point - this prompted me to load test mine (which is the same 28V capable model as this deal) at 100W and it happily does it down to 20% remaining capacity before cutting out and limiting to 60W. Which appears to be a software limit, not a thermal limit, as it does the same even with a varied thermal environment. I presume this is protection for the cells, to avoid increased wear when hot, and at low remaining capacity.
At 140W it appears to limit output at 50% (presumably for similar reasons), but I need to test more.
I have the same model as this deal. Which does appear to be slightly different than the one in the video, because it does not do 28V. So the thermals and efficiency may well be improved.
Out of interest, I ran a few tests on mine and it will output 100W from 100% down to 20% without cutting out. The 20% cut out appears to be a software limit, not thermal, based on some limited testing in different thermal environments. In actual use running / charging a high power laptop, it's very hard to sustain 100W, and the unit does not cut out at all.
Note that in the video they are pulling 100W and 45W at the same time - not just 100W. I am still waiting for my replacement 65W load tester, so could not accurately test 145W total from two ports to replicate the exact testing in the video.
I could do 140W from one USB-C port (28V, 5A) to my 150W load tester, and the power bank cut out once drained to 50% capacity. Interestingly it cut out at the same point even if I varied the thermal environment, and would output 100W right after, but not 140W. But after some time, would allow 140W again. So it may also be a preemptive software based limit, rather than purely based on thermals. I will do more extensive testing when I get a chance.
IMO the Ugreen is a solid choice at $100 for most people, but of course some are better off going for a more expensive model.
The ZMI QB826G is a great power bank (and I have one of those too) and is better quality, higher output, and has a better thermal design. But it's noticeably larger - about 18%, and about 10% heavier. It's also quite rare to find it on sale for under $150.
In my testing, the QB826G will sustain 100W down to zero remaining capacity. But will cut out in the 40% capacity range if supplying 140W. (This appears to be a thermal cut out, because it varies in remaining percentage, and fan cooling helps). Once my replacement load tester arrives (and a second 150W load tester I ordered) I will see how long it can output the full 210W.
Really though, the "issue" with thermal cut outs is overblown IMO. I have the Baseus Blade, which cuts out at 70% when supplying 100W . It also appears to be a (partially) software based limit, not just thermals, as it is repeatable to the exact same point. But in normal use (even with a heavy workload) it's hard to sustain 100W, and I have never had it cut out when powering my relatively power hungry laptop.
can I use this to jump start my car?
It says estimated delivery at the end of February… Is this normal for AliExpress stores?
It is for batteries. Likely sent by sea instead of air.
Why are there 2 coupon codes? Which do I use?
Also, there's 2 options for 25000 with different prices. Which one is this deal for?
I applied the first coupon, but it was 107. Tried applying the second one, it said these codes have already been used.
Those are some bold claims