An internal examination of a pink USB power bank I spontaneously bought from a UK seller. I only opened it because there was a very oriental jet-black human hair trapped under the cover. But once open I was surprised to find that instead of the usual soldered-in 18650 cell there was a loose cell in a holder.
A quick analysis showed that this power bank uses the classic FM6316FE controller chip that controls both charge and discharge of the lithium cell.
Quiescent current was around 16.5uA (not milliamps as I mentioned!) which is absolutely excellent for the standby current of a device like this.
On these power banks the 5V supply is available constantly at the output and the booster only kicks in when a load starts pulling that voltage down. So these packs will work with even the lightest load of just a milliamp or two if needed.
A quick analysis showed that this power bank uses the classic FM6316FE controller chip that controls both charge and discharge of the lithium cell.
Quiescent current was around 16.5uA (not milliamps as I mentioned!) which is absolutely excellent for the standby current of a device like this.
On these power banks the 5V supply is available constantly at the output and the booster only kicks in when a load starts pulling that voltage down. So these packs will work with even the lightest load of just a milliamp or two if needed.
When you measured the quiescent current, you said it was 16 1/2 milliamps, but a minute later you said it was only using microamps. Which was it ?
Thanks for the video!
One question, is there any way to increase the output voltage from 5v to 6v? I mean by replacing / modifying any resistor? or what would be the best solution to reach to 6v any current.
google translate makes enough sense out of the datasheet to figure out what's going on.
Hi, Are these the same as the Pound World 1800mAh ones, but with a lesser battery?
I have had two similar looking power banks fail supplying 1amp through a homemade usb cable, after getting to hot. what would be the easiest method to reduce output to 7 or 800mah?
I just bought one of those and when I plug it in to charge my phone, after some time, probably when it's discharged, it actually drains the battery and the blue discharging light goes a bit dimmer than normal and the phone goes absolutely mental with the charge indicator flickering between charging and not charging and the phone gets really hot.. Is that behavior normal or is my power bank broken?
these power banks are now £1, one single englandshire pound, in various pound shops and Ive got a few and i noticed that the red LEDs which flash to indicate theyre charging all flash with slightly different intervals. weird.
These look like an excellent little product – they take a replaceable cell, so when the 1000maH (as seen in your other video) cell wears down, you can replace it with a much higher capacity cell. I recently picked up some genuine panasonic cells for my electric cigarette off eBay and they last ages – 3400maH! So I went and purchased more of them and use them in a Soshine E3 bank which takes 4 cells, individually monitors each cell, has a fuel gauge for each (which can be turned off if you like); the only draw back is it charges them pretty slowly, off a usb port. I'd link my supplier for the cells but he only ships to australia 🙁 When my electronic cigarette registered "Check Batt" I put the battery on my RC hobby charger and I put back 2597 maH into the cell, and my cigarette errs on the high side for "battery too low" sensitivity. I might pull the soshine apart, and look at the current sense resistors, and beef up the charging current a bit (taking into the consideration the limitiations of the USB spec).
Hi Clive just looked into the 4213 chip in these power banks from what I can gather it's supposed to put out a fictitious 1amp .looking at the data sheet there an I set pin with a 1k resistor on it. May be a smaller resistor would increase output current?
great vid
Brilliant video once again.
Keep em' coming Clive
Yeay "pink shit" review lol