Liitokala Lii-M4S Li-ion Charger

I've tried a bunch of chargers, but this one's been a total lifesaver. It's ridiculously easy to use and offers amazing value for money. The build quality's top-notch, and it works with just about any Li-ion battery I've thrown at it. Plus, it's tiny and the battery life is crazy long - perfect for when you're on the move. I've used it for weeks now, and it still feels like new.