It depends on what you mean by charger. In truth, the only “chargers' actually around are those that you drop batteries into. Some take camera or camcorder batteries, some take smartphone batteries. Everything else is a power supply. What's in a P... read more
What’s in a Portable Charger This is a portable “charger”, according to most people. You think of it that way, because, well, it’s portable (mine here is not exactly pocket sized, but it’s fine in a backpack or coat pocket) and it charges your stuff. read more
Yes, you can trickle charge a capacitor. Just throw a resistor inline with it to limit current. When it is fully discharged it will look like a short circuit, so it'll try to draw the most current there. read more