I have a multimeter, but am pretty clueless on how to use it. I lost the instructions, so I know that's no help. It's not digital, it's the cheapo one from walmart- GE brand. I have options for DCV, ACV, OHM, DCA. And on the dial (which I haven't figured out either) I see it has areas for battery testing, AC10V, V mA, and a little squiggle that I assume is the OHM sign. I will gladly take a pic of the multimeter if it will help someone figure out what I'm talking about.
Anyway, I want to know if I can use a USB car adapter that I already own, to charge my batteries in the car. I read that someone tried it, but the cheapo adapters weren't regulating voltage coming out, so it was spitting the full 12V into the USB. I'd like to avoid frying anything, so I wanted to check my adapter to see what it's putting out.
How do I do that? Which setting would I use on the multimeter to tell me how many volts are coming out? And how many are OK to use with a USB battery charger? (stock 901 battery?) I usually charge the batteries by USB on my satellite box or PS3, because it's bit faster than on my computer USB port, but I don't know what they put out either (or how to tell) so I can't com[are them.
Thanks guys.
Anyway, I want to know if I can use a USB car adapter that I already own, to charge my batteries in the car. I read that someone tried it, but the cheapo adapters weren't regulating voltage coming out, so it was spitting the full 12V into the USB. I'd like to avoid frying anything, so I wanted to check my adapter to see what it's putting out.
How do I do that? Which setting would I use on the multimeter to tell me how many volts are coming out? And how many are OK to use with a USB battery charger? (stock 901 battery?) I usually charge the batteries by USB on my satellite box or PS3, because it's bit faster than on my computer USB port, but I don't know what they put out either (or how to tell) so I can't com[are them.
Thanks guys.
