Pink USB power bank analysis.04:33

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.