# Signify 6000mAh Powerbank \$9.99 @ ALDI

1230

6000mAh powerbanks on sale at Aldi from Wednesday 17 April 2019. 2x USB outputs and available in black or white.

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ALDI

Just fyi for everyone wondering that is enough to charge an iPhone XS around 220%

More like 150%. Even with 100% efficiency you'd get ~167%.

Pretty sure the power bank outputs at 3.7V while your phone charges at 5V.

So, you'd get more like 3.7/5*6000=4440mAh out of it at 100% efficiency. Drop the efficiency to 90% when you account for the heat, and you get around 1 full charge and a half on that iPhone XS.

OK, thanks for the clarification :)

This is brand new and performance will decline over time. Best practice recommends only discharge to 20% for longevity, so you probably want a battery with twice the estimated required capacity.

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At 100% efficiency (impossible to get anywhere near that), wouldn't you get 6000mAh? Both the battery in the power bank and the battery in the phone will be rated for (x)mAh @ ~3.7V (even though it charges at 5V).

That's why we should specify capacity in Wh instead of Ah.

Incorrect. The cells inside the power bank have a nominal voltage of around 3.7v. Same as the cells in an iPhone.

The powerbank would output following the USB spec. Which is 5V, or higher if it's some fast charge protocol. The phone would accept the 5v (or higher) and drop the voltage in accordance to the CC/CV cycle of the cell.

Typically the boost chips are ~94+% efficient.

So if you'd like to know how much it would charge your phone, comparing the mAh of the battery pack to the mAh rating of your phone is reasonable enough, adding in some round trip losses (maybe 10%).

So if the battery rating for the iPhone Xs is 2700mAh(approx), and the powerbank is rated at 6000mAh, then:

(6000/2700)*0.9[round trip efficiency]= 2

So expect to be able to charge your depleted iPhone Xs about 2 times using this powerbank.

We can also bypass the whole mAh voltage shennanagins and start using Wh, but who wants THAT? Β―_(γ)_/Β―

Well, as you can probably guess, I'm no electrical engineer.

I just remember seeing Xiaomi claim 6500mAh actual output on their 10K mAh power banks, so I looked around a bit and the 3.7V/5V*Capacity seemed to match Xiaomi's claims with 90% efficiency..and the rest is history

@Limboi: Yeah that's fair, I'm just really into both bargains AND pedantry.

Some of the newer phones' battery have a nominal voltage of 3.8V, with a fully charged voltage of 4.35V. Some power banks are like this too.

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@kevlarman: Yeah, I've seen papers with cells being pushed to 4.4V.

@kevlarman: Often the hike in voltage only accounts a very small quantity of Wh at the top end of the battery, a gradual increase above 3.8V over the last 5-10% of charge. The low end will also dip below the nominal and while it won't dip as sharply as 0.55V it'll be lower for a larger percentage of the battery.

For practical calculation purposes just using the nominal should be fine.

\ you dropped this!

@WARvault: Leave him alone, he's 'armless

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I get so infuriated with mAh - why isn't the use of (m)Wh to avoid any confusion used as standard.

Because batteries are treated as being of fixed voltage within their usable capacity. If you've got a 5V device that draws 1A then it's easy to work out how long you can power it from a battery of X Ah capacity. You're right in that it's not as convenient a unit of measurement when charging devices, but that's not where the standard came from and it's not likely to change any time soon.

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I think it works just as well on samsung in case anyone is wondering.

Yeah, it's just a usb out…

``````              (i just used the iPhone as an example)
(it'll work on any android device (not just android))
``````
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yep what you say is theoretically correct

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Wow. Good price. This or a 5000 Xiaomi for ~ \$20 when Iβm special? Thoughts people?

It depends. Do you feel special now?

πππ on*

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Haha. Although this is ok for the low price, 60 day satisfaction return policy and easy return Aldi warranty, I much prefer the slim flat form factor of the Xiaomi 5000mAh which is top quality and even better with a silicon anti slip case on.

Although I have many other larger power banks, this is one of my favourite and most used batteries.

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@ozhunter68: Is there anything like this (size wise) that has USB-C PD?

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@tonydav: When you say, "this size" do you mean the Aldi one. It looks smallish, but we are not sure on exact size and weight.

There are not so many small/light usb C PD power banks, but the old discontinued Cygnett ChargeUp Pro 6000mAh is nice and light and thin/flat, might still find it around if you search.

As opposed to the Xiaomi I mention in comment below, this will output on the usb C 15W so not PD, but will output on the type C and A simultaneously ( just tested mine ).

The Romoss below is not too big, although not so light too.

https://www.ozbargain.com.au/node/435860

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@ozhunter68: @ozhunter68, was meaning the Xiomi size and weight.

Is there any actual benefit of a Powerbank outputting USB-C but not PD over just using a USB-A to USB-C adapter? I know my 2.4A charger will charge my Dell laptop. But slowly. Vs using its PD socket and it's very quick.

5000mAh Xiaomi for \$20? You can get a 10000mAh Xiaomi Power Bank 2 for \$24 here

Can't comment on ShopPro's service, but I've seen deals from their store posted here in the past.

Size of the 10000 is too big I think.

Β―\_(γ)_/Β―

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@Limboi: Haha actually I just checked. 10000 size is same as my old one. Itβs perfect. Iβll get that but with USB c. Thanks!

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@Bellpop: The Xiaomi 10000mAh Pro PLM03ZM is a top power bank being a little thinner and lighter than the old and new 10000mAh and has usb C for QC3 input charging ( not charging other devices ), but only one usb A QC3 output.

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@ozhunter68: Thanks mate. Time for me to track down a good deal on one π

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@Bellpop: The old discontinued Cygnett ChargeUp Pro 6000mAh is nice and light and thin/flat, might still find it around if you search.

As opposed to the Xiaomi I mention in comment below, this will output on the usb C 15W so not PD, but will output on the type C and A simultaneously ( just tested mine ).

This is a really handy light and small usb C in/out powerbank that even has that digital % readout too.

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@Bellpop: This new one charges both ways through usb C. Wait for a good deal below \$40 delivered.

https://www.shopro.com.au/mobile-accessories-5/xiaomi-mi-pow...

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ShopPro are good, Australian based and quick delivery.

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I've got a 20000mAh Xiaomi power bank but bought one of these when they went on special for \$18 so I'd have a smaller one to carry in my pocket when need be (Shopro is great by the way, I've bought a few things from there now and can't fault them at all). Solid little charger, although I've only used it once because then I was able to get a free Samsung power bank, which is better suited with one less cable to carry as it's USB-C.

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I think they're sold out?
I tried taking it to the checkout and it told me to choose a variation, but the options were greyed out

Xiaomi

quality over quantity

Cool. Does anyone know if it's microUSB or USB-C? I'm betting it's micro though.

No idea yet. Unfortunately the online catalogue is not yet available which might have more info.

15 cents on it being microUSB!

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20 cents!

Sorry mate, we only bet eneloops here.

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How's the exchange rate?

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Does anyone know what cells are in these? 3000mAh I gather, but which variety?

Looks thicc so 3 x 2000mAh 18650 cells. Put me down for 20 cents.

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Yeah 18650 are a given but Samsung? Sanyo? I was hoping someone might have torn one down previously.

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Guess we'll have to wait and see. Doubt they are high drain though if you wanted to harvest them for high powered torches.

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Highly doubt name brand. Probably those cells which have the barcode on them - no clue what to call them.

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Turns out that they are "CANFER" branded INR cells: https://imgur.com/wi57III

3 of them of course.

Can't seem to find any useful information about them.

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@cainn: This document appears to be a safety and performance test report for CANFER branded 18650 cells of varying capacities. They don't look exactly the same though (scroll to the bottom for pictures) so make of it what you will.

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signifyyy maaan

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How truthful is the capacity rating?

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With aldi, I'd be fairly confident that it's actual capacity is close to the rating.

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Hurry up with the rest of the catalogue!

Nice deal OP, thanks.

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Yes

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Does anyone still use these since Pokemon GO is no longer a thing?

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Its still a thing. Spent my lunch hour raiding today. Cracked 26,000,000 XP.

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How does this power pack compare to Aldi -
It's 50 000mAh = \$11.85

https://www.ebay.com.au/itm/50000mAh-External-Power-Bank-Dua...

Absolutely zero chance that powerbank linked is actually 50,000 mAh.

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I wouldn't trust those nobrand power banks. That one in particular is especially dodgy. I don't know how they managed to push 50Ah into that bank. It MIGHT be possible had they used 14 high quality 3600mAh (or some other prismatic/pouch cells). Otherwise the capacity rating is flat out wrong. Even the cost of the cells alone would be about \$40. So the powerbank is using knock off/low quality or recycled cells, Which won't have the cumulative capacity listed, and worse, it's a dangerous lithium accelerated inferno just waiting to go off. I doubt the powerbank has OCP (Over current protection) or even a fuse.

No, there is no "might"

Its actually impossible to do what they are claiming based on size, and weight.

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I'd be very very surprised if it was truly 50,000mAH.

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Thats not 50000mah….

You do realise that everything has to follow the laws of physics?

That powerbank would be roughly 6000-10000mah depending on how much they want to scam you.

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HAPPY 2013 SALE

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You wont believe me but here's how they do it! /s

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I doubt if this is like one of those Mb/s , MB/s thingies xD

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Anybody know if 18650s can be harvested from this?

I'm on the task…. just give me 7 days…

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It should be, unless inside is three AA batteries with 2000 mah each and it is marketed as 6000mah. lol.

Ironically I bought one from China that looks very similar and has AA batteries inside. Into the bin it went.

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I just want a charger that charges like a real charger

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extra dollop

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I love my 20,000maH Xiaomi, but yesterday in the mail I got a powerbank phonecase from ali express.

https://www.aliexpress.com/snapshot/0.html?orderId=996820868...

Just excellent for my morning walk, always nearly out of charge at the end of my walk due to pokemon. Came back with 100% charge.

Not the prettiest/most protective case, but in terms of getting me through the morning walk, it is excellent. Will put on my regular case for the rest of the day.

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Aliexpress is not going to let people view your order details ;)

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bugger , and i just built my own power bank out of 18650 batteries

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Can someone who owns one tell me if these can charge a device whilst they are being charged themselves? I wish to use one as a UPS for a raspberry pix so it needs to do both at the same time which is a rare feature in these devices.

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Does anyone see this available at any Aldi store yet?

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Had sold out at my local Aldi, but managed to pick one up elsewhere.
They're being kept behind the registers…

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if anyone has bought it/ seen it

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Bought 3 of them, a bit thick but light enough to carry around. 1 was completely flat so charging it up now. Plugged into an iPad Pro 11", seems to be charging fine.

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They are at the register… so ask for it

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I bought two of these and have been doing some capacity tests.

So far I've tested one of them. After the first full charge, it measured 3900 mAh. After the second full charge it measured only 3300 mAh(!!!)

This is well out of spec. Suffice to say that if the second one is also this bad they're both going back.

They also deliver current from the charging port. Macbook users beware…

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Can you please share how you tested them
And how you got to the mah. reading

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I made a pretty silly mistake, unfortunately I ran out of time to edit the original post.

The rated Ah capacity is of course at the voltage of the cells, not the USB output. An energy rating in Wh isn't given, but it would be at least 22.2 Wh (nominally 3.7 V * 6 Ah). Accounting correctly for this I measured 19.5 Wh the first time around and 16.5 the second. The first measurement I would still personally consider to be out of spec, while the second is simply unacceptable. I'm going to cycle it a few more times to get a better sample before I move on to the second one.

Nowhere on the device, on the packaging or in the manual are the cell voltage or chemistry stated. If it's LFP (3.2 V) then 19.5 Ah is very close to spec. I would expect something as fundamental as this to be stated.

I used an inline USB power meter (example) and a USB variable load (example).

I would still be wary of the fact that the charge port delivers current.

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Thank you
Therefore, will have to purchase the usb power meter/variable load to test it at home myself
Also, does this mean, we need to test all power pack we buy, either from ebay or from stores ?

I am very interested in the final outcome of your research
Too keep or no deal to return.

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@jcft: I do it out of interest and because I like to be confident that I'm getting what I paid for, but I would absolutely recommend testing anything bought off eBay. In general however I would recommend not even bothering with yum-cha electrical goods from eBay, or any of the Chinese equivalents, since they massively exaggerate their ratings and usually don't comply with any Australian safety standards. I do appreciate the irony of using cheap Chinese USB test devices for this ;)

As for Aldi, they're not in the business of misleading their customers in the same way as the Chinese eBay sellers, but I was curious. I might have to open one of these up to see what it contains.

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Nowhere on the device, on the packaging or in the manual are the cell voltage or chemistry stated. If it's LFP (3.2 V) then 19.5 Ah is very close to spec. I would expect something as fundamental as this to be stated.

They are 2000mAh CANFER branded INR cells: https://www.ozbargain.com.au/node/449956#comment-7180763

So lithium manganese nickel with a nominal voltage of 3.7.

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