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Forum Index : Microcontroller and PC projects : What is this
| Author | Message | ||||
| JohnS Guru  Joined: 18/11/2011 Location: United KingdomPosts: 4100 |
It's here Obviously the power isn't 9000000mAh, so... what do think it might be & what is maybe/probably inside? John |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2970 |
Hi John, It probably has those new Chinesium batteries. Mik . Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8232 |
It weighs 63mm so it's obviously a 300mAh 18650 marked as 2000mAh. These are produced in bulk by the Shiningkrap Electronics Corporation. :) It also incorporates the remarkable feat of having a Schrödinger charging cable, present yet not present simultaneously. . Edited 2025-09-20 17:20 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 4100 |
Thanks. Oddly the Subject changed - I guess TBS couldn't handle quotes there. It Was: What is this "Power Bank" Really? John |
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twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1646 |
must be an VSMR!  causality ≠ correlation ≠ coincidence |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 675 |
Just a guess: The m is for micro not milli and the akku has indeed 3x 3Ah but at max 3,7V. Stating some Ah but leaving out at which voltage is common to fool the buyer |
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Plasmamac Guru Joined: 31/01/2019 Location: GermanyPosts: 594 |
Nuclear powered ! Plasma |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2787 |
Nuclear powered indeed! The add says 9 million mAh but looking at the size and shape of it even a single 18650 won't fit. Only room for a single small pocket cell. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8232 |
It's 90mm x 63mm x 25mm. Plenty of volume for a half decent standard power bank. The detailed photo further down shows a flat cell and a PCB, which makes sense. I'd guess at about 10Ah, although it could be as high as 15Ah. It may or may not include a charging lead. :) Basically, you can charge a couple of phones from it (two sockets) at up to 2A total, but only at 5V so no USB PD at that price. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 4100 |
Thanks! I never thought of m being u (micro)! If it's 9Ah or 10Ah it's not a bad price (I think). John |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1646 |
John,  mAh and Ah are fixed units. Why are you dreaming/what makes you think you're getting a 9AH device? Kind regards Michael causality ≠ correlation ≠ coincidence |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8232 |
Until you get one and test it you don't know what you are getting. It really could be anything! Just don't rely on the advertising to be any of legal, honest or truthful. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1646 |
 And all, really all, Chinese people are always honest? Have there never been reports of fake batteries? If the unit is really micro-amperes, wouldn't it be explicitly written there for clarification? I would do that. But apparently, it's worth it for the seller, even if they have some returns or refunds. Regards Michael causality ≠ correlation ≠ coincidence |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8232 |
It's a different world. When there are no real penalties for misleading advertising, or the ones that there are aren't enforced, you will get just that, goods that are advertised as being far better than they really are. As long as the buyer accepts that the adverts are only a rough guide does it really matter? :) No, I don't think it's a problem with Chinese people in particular, it's a problem with the system that they are operating under. Without enforcement it's the Wild East. :) I'll be honest, I've been (knowingly) ripped off only once by an AliExpress seller. They were/are producing what appear to be genuine Sony micro SD cards at cheap prices. They are fakes with a low real capacity that report a much bigger capacity. Your data drops into a fantasy bit bucket while the directories are updated correctly. The cards and the sealed packaging both look genuine and would probably be very difficult to tell from the genuine article. It came from the Sony Electronic Specialty Store (who are still trading) and cost £1.93 for 256GB. At that price I knew in advance that it had to be fake, but I wanted to see what sort of fake! Everything else I've bought from China has been fine, some of it exceeding my expectations by a mile. Just think about the adverts before you pay anything. What might they be hiding? Would the price be anything approaching realistic? Are any other sellers selling the same item for that price? Are they really the same seller with a different name? Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1646 |
Well, you're right, of course! Regarding Aliexpress, I've always been able to assert my claims and have never suffered any losses, but sometimes it's tedious and annoying. I think many customers simply don't have the expertise. Then they unpack the item, write a review, and the product ends up in a drawer. In my opinion, it's important to know the range of capacities that are currently technically possible (for expensive brand-name products). If you base your calculations on that, you know that 900,000 mAh isn't possible for this type of device, and the same applies to monster SD cards. causality ≠ correlation ≠ coincidence |
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