A look inside a couple of single cell power banks that have gone for a different style of case to save space.
The one with the LM324 as the cell charge level indicator was quite neat. That would also explain why there was no multiplexing flicker when I pressed the button.
The one with the LM324 as the cell charge level indicator was quite neat. That would also explain why there was no multiplexing flicker when I pressed the button.
The white signalex powerbank are available for 99p @ Camden high street.. Dec 2017..I carry one but don't feel very confident about there reliability
any idea where I can still get that black one? That'd make a nice custom e-cigarette
That is interesting they use a quad op amp. Some of these things amaze me as to how simple they can be or how complex. I am fixing my headphone amp and just checked my op amps and they are not the issue, but I have a film capacitor on the output that shows voltage in, but nothing out, so I have found my issue.
Hi, Clive – I popped into my local Poundland this week and found a power bank like the sharp edged pink one in your video.
It claimed to be 1200 mAh so I bought one. Surprisingly it is well made with a neat little control board and a cell that tests out at 1250 mAh – a cheap way of getting 18650 cells.
i have that white power bank that says "POWER"
Anyone have the link to buy a replacement charging thing?
that best powerbank is PNY 7800mah from pc world or curry's retail price £30
second best is the kodak powerbank retail price £16 from asda
I wonder if TK Max is anything like TJ Max and Marshalls…
i have a power bank with lm324 ic like you have . i want to convert it 2200 mah to 6600 by adding 2 more battries in parallel but it draws only 0.5 amps i want to increase this to 1.5 amps so the power will charge quickly.
Can you tell me what to do?
i will link the a pic of the circuit i you are willing to help me.
Are you a pyromaniac that constantly burns all the hair off your hands and arms or are you just naturally hairless?
the black one with the electronic indicators and flashlight at the beginning is like a cheap one I got from Walmart that sorta looks like an Oreo it's ok quality battery lasts for a few hours