On 19/12/2020 09:59, Dave Liquorice wrote:
Wouldn't like to bet on it. A Li cell is nominally 3.6V. 5 V power
banks use a DC-DC convertor to step up and regulate that 3.6 V to 5
(+/- 0.25 V).

the ones I use (to step *down* from 2+ cells) are used with sensitive
radio control receivers. They HAVE to be clean. And they are very cheap.
Google UBEC or SBEC.




--
Its easier to fool people than to convince them that they have been fooled.
Mark Twain