Forgot to post links for the meters I use.
DROK USB 2.0 Digital Multimeter, Ammeter Voltmeter Capacitance and Watt Meter, 7 Modes Multi Tester
Amazon US: https://www.amazon.com/dp/B00J3JSEG6
And this looks like the same meter on Amazon UK: https://www.amazon.co.uk/dp/B00J4H5I3E
Note that there is a version without the extra modes or button (only measures V & A) and Amazon in the USA got tripped up and had the 7 mode description on the other meter. So if you order the 7 mode meter and get one without the selector button, send it back. It seems that the other version is no longer available on Amazon USA, but it's still on the UK Amazon site (at a higher price).
I also have one of these: https://www.amazon.com/dp/B01L8QNG6Y
Which appears to be identical to the Drok at a lower price (when I bought it, anyway).
And one of these: https://www.amazon.com/dp/B01H1UW9H8
Which shows Volts, Amps, mAh and time (H:M) all at once. Nice, but the smaller numbers are harder for my aging eyes to read. It was much cheaper too (this is the one I got for less than $5, but it's a bit higher now).