SkyRC MC3000 Smart Battery Charger for NiMH Li-ion LiFePO4 - Fast Charging for AA AAA 18650 Batteries - Perfect for RC Toys, Flashlights, and Electronics

I've used several chargers over the years (several efests, nitecores, xtars, gyrfalcon). Even though this is only a 4-bay, this is the charger I'd keep if I had to choose only one out of all that I have.I am a vape nut. I think I currently have over 50 different cells in a variety of sizes and ratings for a plethora of different mods I rotate regularly.For normal daily charging of my batteries, I use the Gyrfalcon to just pop them in for a hassle-free experience. It's not the most precise thing, or feature rich, but it's convenient.This MC3000, though, is a completely different animal. This thing is so feature rich. Wow. I am my own battery test lab, which is so awesome. Whenever I purchase a new batch of cells, they go straight into the MC3000 first. I test their capacities and internal resistance, and sort and group them according to my planned use of them. It is precise (enough), and does everything a common person (or geek/hobbyist) would want in a high quality, technical charger with a ton of settings and functionality.It requires a little learning, perhaps a YouTube video, or two. But once you do, you'll be glad that you're able to use this charger without fear of not knowing what you're doing.It connects to your phone via Bluetooth, though, I've never used this function. It's simple and clear and shows pertinent information about the operation at hand. Overall, fantastic charger at a fair price and would highly recommend to anyone needing to test and measure their cells on a regular basis.The only thing I would MAYBE suggest to those with a ton of different size and spec'd batteries is to have a less "technical" charger on the side for convenience. Otherwise, this thing is the best, in terms of precision, functionality, and features.