For those of you who do not need 65W in the other baseus powerbank deal.
Cheaper price than previously posted
| Power bank | eBay Plus | eBay Normie |
|---|---|---|
| 20W 10000mAh | $23.39 | $23.99 |
| 20W 20000mAh | $31.19 | $31.99 |
| 20W 30000mAh | $35.87 | $36.79 |
So those 20w ones are good enough? Looking for one for a Switch as have a long haul international flight coming up!
The Switch should be able to charge off a 20w charger like these. (the original switch model is a little pickier about power banks than the later ones, but it should as well)
The 20,000mAh has 74Wh and a switch has a 16wh battery so in theory it will make the switch last 5 times longer on battery than it usually does.
If you're gonna be on a few long flights, it might be worthwhile to check seatguru.com if your flight/seat would have a built-in power plug under the seat. No harm in bringing both the battery and a proper 65W AC charger.
Solid FYI. Ty
Nice Information thanks never knew would be useful end of the year
What’s the irl difference between 20w and 65w charger? If I intend to charge laptop or switch is it better to get 65w charger?
I don't know any laptop that can charge at 20W. Some can charge at 65W, you will need to check the laptop's power input specifications.
For switch:
handheld
Original Switch: 18W
New Switch: 18W
Switch Lite: 13.5W
docked
15V/2.6A power profiles (39W)*
My macbook air will charge at lower wattages when connected to lower rated power sources. I thought PC laptops would do the same and just charge slower.
What is the difference between capacity and rated capacity?
Baseus PD 20W Power Bank With LED Display 30000mAh
Capacity: 30000mAh/3.7V 111Wh
Rated Capacity: 18000mAh
Energy Conversion Rate: more than 75%
Most power banks are created using Li-ion batteries, which have an average voltage of 3.7V. This is the voltage that manufacturers use to calculate the theoretical capacity of their power banks. So when you see a 10000mAh capacity power bank, it’s based on the 3.7V value.
However, when power banks are used to charge other devices, they don’t supply 3.7V. Instead, they need to supply 5V, which is the required USB standard. If you were to look at one of the output ports of any power bank, most likely you would see one of the following values printed next to it: 5V/1A, 5V/2A, 5V/2.4A, etc. Always 5V and not 3.7V.
So when the native 3.7V is converted to the supplied 5V, the capacity also drops.
Thanks. Would be good if it stated @5V.
It's standard for USB so they never state the @5V part
would you happen to know what's the capacity if you're charging at 9V?
there's a formula in the source link to calculate it.
So basically E = VIT and when manufacturers report Amp hours, they're reporting IT. Too lazy to google but why don't manufacturers just report the value of E - i.e. with Joules as the unit?
Edit: Skimmed the article. Reporting E won't be useful either. What should be reported is E @ 5V due to power losses when transforming the voltage. But manufacturers want to keep their efficiency opaque so there's no easy way to compare which brand/model is actually better.
But manufacturers want to keep their efficiency opaque so there's no easy way to compare which brand/model is actually better.
There is no industrial-wide standard on how efficiency is measured. That may lead to some manufacturers cheating. That may lead to even more illusion and confusion.
Borrowing the thread, would people be interested in the Baseus Magsafe Wireless Charging Power Bank for iPhone?
The specs and looks are the same as the 10,000mAh version in this post, with the additional feature of Mag-safe support to wirelessly charge iPhone, Airpods etc. We tested this one, the Momax one, Zmi one and Apple original then found it to be best value for money among the group, providing about 2x full charge for iPhone 12&13.
Link to Amazon US for reference.
The caveats are:
1 - Requires the special magnetic phone case to work as intended, or without a case, otherwise the magnetic force is too weak for the power bank to be attached to the phone
2 - Price is still quite a bit higher than the plain 10000mAh power bank without wireless charging, but obviously a lot more reasonable than the Apple official one.
Please leave your thoughts so we can decide on whether to make it locally available in Australia via our shop
I’d be interested in it. Having a charging wire dangling from your phone to your pocket looks goofy af.
Just my 2 cents, the 6,000mAh variant, lighter and smaller, may be more attractive.
It sounds interesting, but if it's 3X the price just for magsafe, then I wouldn't buy it.
Do any of them other than the Apple one actually charge via Magsafe at 15W ?
Many of these powerbanks quote 15W wireless charging - because that's the maximum for Qi-compatible phones - then in really small type somewhere have something like "Apple devices max 7.5W".
I bought a cheap 10,000mAh one with wireless charging for $20 (bought it because it was cheap). The wireless part isn't worth it I found because:
Why would we not buy directly off baseus through AliExpress?
Excellent, I needed two new 20k power banks as my Xiaomi ones are on the way out. Ordered
Micro USB?
They have micro usb input so you can charge it with micro usb.
Yeah I thought so…. That's unfortunate
It is dual input, so you can use micro or usb-c
15W 10000mAh OOS :(
Is it worth it to get the 22.5W instead of 20W?
Is baseus a reliable brand? I've been burnt twice by romoss so am patiently waiting for a good Anker or cygnett deal.
Care to share your experience with Romoss? I've been looking at a few of the new 22.5W 10K/20K powerbank, so your input would be appreciated.
The first one was a 40k 18w romoss (the sharp bulky looking one). I used it sparingly over 3 months then I took it camping over a long weekend and found it would charge for a minute then shut off again. It did it regardless of the connected endpoint (phone, usb headlights, iPad, etc)
Returned via Amazon and bought the 30k 18w romoss (white smooth edge type) with the refund. This had the same issue after a month, and of course it happened when I needed it most.
Amazon were good with the 2nd refund and I swore I'd never cheap out on a power bank again. I've only heard good things about Anker.
it would charge for a minute then shut off again.
How were you using the battery? Did you leave it in a discharged state for more than a day or two?
A lot of people don't know that leaving lithium batteries in a discharged state, for any significant amount of time, is very damaging to the battery. The battery will "age" much faster than normal. After being flat for a few weeks the capacity will be effectively zero, and the damage is permanent.
Possibly you received "old stock" from the seller, with the battery already discharged and damaged.
@Russ: It was always charged and ready to go.
Edit: I didn't know that about lithiums so thanks. If I remember correctly both came from amazon with enough charge. I could have bad luck but Romoss is on my shit list.
@WarriorZ: I found with these "cheaper" powerbanks with a display showing percentage, it is not a good idea to rely on the figure reported. Also, with those ones, it is better to use them regularly, rather than charging it fully, store it for weeks, then use it.
I have another cheap brand ones which reported 80% and would only charge 1 minute or 2 initially, then reports 0%. However, if your issue was you freshly charged it the day before (i.e. from 20% or lower to 80% or higher), then yes, the powerbank is just rubbish. Honestly, most of these powerbanks would use inferior grade batteries.
Thanks for sharing!
Gotta say I also had a similar experience with Romoss. Mine was this 20000mah one, which I paid just under $30 IIRC. The display claimed it was 60%-70% out of the box, so I went ahead and charged it to 100% before using.
Once it was charged, I tested it with my phone, but it only got about 40% charge (phone capacity I mean, so ~1200mah of iPhone 12 battery) out of it before reading 0% and dying on me. I repeated this a second time, again charging the Romoss to 100%, and charging my phone off it, but received basically the same result. I immediately refunded with Amazon. Didn't bother trying a second one though.
On the other hand, I've had 2 Xiaomi power banks, both 20000mah capacity, and they've both been flawless. In fact, the oldest one is 5yo or something now, and still being used by a family member as a hand-me-down.
Very strange… have 3 20000mAh here that I use every week that I rotate, just checked bought them all in 2019. Still going strong.
Wife has a habit of using it down to 0% as well.
I do charge via USB C tho if it makes any difference and only use the powerbank with iphone and ipads.
I've been researching this myself the last week, I decided not to get Romoss due to bad reviews online and OzBargain.
As far as I can tell the Baseus power banks are high quality, probably comparable with Anker and Cygnett.
I've used lots of Basues products in the past. Generally buying from Aliexpress, Basues, Xiaomi, and UGreen are all great quality.
I found these to be more like consumables and tend to degrade over time.
One issue is how we normally use these. We tend to drain these close to 0% and charge them up to 100% (so full charging cycle). These cannot have smart battery charging in the same way as iPhones or the new Macbook Pros (i.e. if it is at night time or based on usage behaviour, the device is going to be connected to a power source for hours until the next morning, charge to around 80% and only charge to 100% when it is close to wake up time).
Would we use powerbanks in 20% to 80% range all the time? Mostly no. I'd be honest, these won't have top notch batteries inside.
Often they are just 18650 batteries in series so decent enough however it's the electronics that manages them can be poor quality or not well programmed that can also cause issues with some powerbanks.
Will it power a raspberry pi if so for how long.
Depends on load i.e. what you are running off it and also battery mAh selected. My guess a 10000mAh would last perhaps 10hrs?
See here
Can anyone confirm if these have a Power On/Off button. Not seeing one in pics so I assume not?
Look carefully there is a power button on the side near the lcd display. The button probably let's you check the charge level of the power bank.
Agh…I must be going blind and strange they don't mention it in Ad or Video (what functions are associated to it).
I have a Powerbank with a power button but is only used to turn it on or show capacity bars. It Auto turns off when device is disconnected but stupidly does "Not" turn it off with device connected hence have to unplug the device each time.
Can anyone confirm that button does turn it off with device attached?
What is the smallest mAh powerbank I should get that would power a laptop for a 15 hours flight to US?
Have an upcoming Xmas trip and was looking to watch movies during the flight for about 10 hours, my laptop lasts about 5 hours on battery so looking for a USB-C powerbank to provide juice for the other 5 hours. Thanks.
Depends on the laptop, but a lot of planes over the pacific have power outlets for the passengers anyway.
If you know how many Watt-hours your laptop's current battery is, and how long it lasts on a full charge, you can do some math based on the watt-hours offered by powerbanks:
10kmAh = 37wh
20kmAh = 74wh
etc.
For your power bank to be allowed on your flight, the maximum allowable is 100 Watt hours. So the biggest powerbanks on the market are 26,000 mAh ones. I used to have an Anker Powercore that was this size and it would charge up my XPS13 fully.
Need a power bank for my Steam Deck, is there any good deal for a 45W one?
Guys I am a noob at this. Can someone please tell me if this would charge a HP Spectre?
I'm maybe a step above n00b, so may not be helpful, but I think laptops generally need 65W to charge vs the 15W/20W here.
Thanks mate!
Yeah, the OP links to a previous deal here which had the 65W type and is more a guide to what you are looking for.
Hi guys,
I'm a bit of a noob as well - I'm a landscape photographer that will be travelling from Aus to Europe next year for a landscape photography trip where I will be hiking in the mountains for 5-6 days at a time. I have a USB charger for my camera batteries - Input: 5V, 2A (max), Output: 8.4V, 600mA (x2), and was hoping to take a power bank with me that I could use to charge the batteries (I'll have a few batteries to cycle between). Each battery holds 1860mah. Would any of these work (e.g. the 20,000mAh one)?
Any will do yes. They all provide 5v output to your 5v input for charging. Your 8.4v output has no bearing, just the input.
Thank you. I was hoping I wouldn't have any issues with taking the 20000mah one in carry on luggage? Also I'm assuming I use the rated capacity - so for example - 20000mah version becomes 12000, so that would give me approximately 6 charges - do I have that right?
Are they a lot of weight to carry?
You do know that the specs are avail on their site i.e. weight and size ;-) My guess without checking would be between 200 and 250 grams.
Recharges = Yes at least 6 but closer to 8 I would think.
@CodeXD: Sorry - as I explained I'm a bit of a noob with this stuff -I did read the description (must have missed the weight ratings, doh) but was making sure I understood correctly as it's going to serve a critical purpose on my photography trips in remote locations so don't want to get the wrong unit. Thank you.
@dinglejerry: As a FYI, the 15w are out of stock however the 20w are still there with $6 off so a decent price. Either are fine and the 20w ones are designed for faster charging devices that support 20w but doesnt matter if your batteries don't. They will just charge at the rate that they need.
@Borg: Ok great. I was told Anker was the bees knees but the reviews for these seem pretty good as well from what I see.
FYI for anyone wondering: 30,000mAh powerbanks are 111Wh, and you can fly with up to 100Wh without asking. Between 100 and 160Wh you have to get permission from the airline. Either way they must be in your carry-on.
Powerbanks that intentionally stay just under 100Wh are about 27,000mAh