IKEA now also have a 3 port USB charger Max 3400mAh total and max 2400mAh on single port, named KOPPLA. Maybe something for future testing? The price is 79 SEK or about 9 USD (actually it´s 9.99 on the US site)
Edit: Found another one - Qualcomm Certified Tronsmart Premium Design Quick Charge 2.0 42W 3 Ports wall charger
I am curious on about the new thin XIAOMI 5000mAh powerbank
With a cell phone type cell in it.
I suspect this kind will be much more common now that ASUS, XIAOMI & OnePlus has released similar powerbanks, all based on the cell phone type thin cells instead of the usual 18650 batteries.
And +1 on the IKEA KOPPLA, that one looks interesting, especially if it would work good to charge XIAOMI powerbanks with. For now the best & fastest known charger for the XIAOMI powerbanks i know from online sources is the Samsung 2A USB charger.
Not yet, I am looking for a new electronic load that will be able to do at least 100A at 15 volt, but I have not found one yet. 200A would be better, but they get very large when you want 3000W capability and a 100A test is probably enough to reveal the packs that are too optimistic.
Itech (Cheap (Depends on the eye), works well and my software can handle them directly) do have some, but I cannot find any dealers (Ebay or otherwise).
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.