[quote=npprod]
with some of very interesting USB voltage-current testers.
[quote=npprod]
Again - why they are interesting? Can You show us some tests?
There are cheaper oled testers than those…
I’d like to see tests done by independant, trusted website (like this). Before that… “very interesting” is just a word.
I decided to buy this: Test/Review of USB meter: Volt Current Voltage Charger Capacity Tester , seems to be accurate enough and with lowest impendance / voltage loss. Unfortunately it has just disappeared from ebay (it was there 2 weeks ago). I will wait, maybe it will show again.