I've bought a few Android chargers on Ebay in the past for my Galaxy S5.
Some of them have been great (fast charging) and some of them poor (slow charging).
How do I spot a fast charger? Is it the charger itself or the cable? I've tried with a USB 3.0 cable and didn't really make a difference to a poor wall charger that I'd bought.
Also, same issue with car chargers (which I plug into the cigarette lighter socket. Some has been great, but I've got one at the moment, which shows that it's charging, but it doesn't really.
I know I can get a fast charger for well under $10.
Is it the voltage or the ampere that I have to look for?
