A second request — a little essay on when to trash/recycle a power supply.
Specifically — when a wall wart switching power supply is audible, with a buzz/rapid clicking, I’d guess that’s a capacitor breaking down and it’s becoming junk?
What other reasons are there?
(When I give up on electronics, generally I cut off the wire and plug, crack the case, landfull the plastic parts, and recycle the electronic parts.)
I do include information about that in most of my reviews. Most usb power supplies is around 0.25 watt when unloaded, but a few are better.
The noise is not directly a signal about it being old, a new one can also be audible, but the noise pattern will probably change.
The typically old age breakdown is the capacitors loosing capacity, it can be measured, but is a difficult to detect without measuring equipment. The adapter will get hotter and it will probably increase the noise in AM radios.
RAVPower 3200mAh Power Bank (3rd Gen) Model:RP-PB08 EAN:6950639095127 ebay.co.ukamazon.comamazon.de
Widely available, inexpensive, 1 Amp output, single brand name 18650 (LGABB41865), smart USB DCP controller (switches USB coding to match device), 100 lumen flashlight (also available in non-flashlight version).
I ordererd two of these “Original Kingzone USB wall charger” at Banggood.
Allready received them and have them in use but I have my doubts about them.
No brand marks on them or whatsoever and they get pretty warm in my opinion.
If you want to test one of these I am willing to pay for one and get it shipped your way.
I would be interested in reviews of single 18650 battery boxes. Because of there size, I find them very suitable for EDCing. I'm willing to send you some widely available ones if your interested in testing them.
Even if the review queue is quite full, I wonder if you can review some Quick charge 2.0 usb charger.
I wonder what kind of signal is used to trigger the 9V and 12V from the charger.
I’m confused whether they actually include batteries - it does say “Battery not including”, but also says “Built in18650 batteries can be replaced …”, so I suspect they aren’t included, which makes it a little expensive, compared to, say, the Xiaomi powerbank.
I also love the “Panasonic or Trustfire? It’s your choice”.