I've got a lot of AA batteries now because of my steam controller, controllers for the oculus headset, and other things. Probably have about 10 batteries I cycle through.
In search of a better solution I came across this on Amazon for 25 bucks and so far I'm liking it. Individually charges each battery, and has a battery charge indicator for each battery.
https://www.amazon.com/dp/B081B8W9HX?ps ... ct_details
