I have mixed feelings over those new Lithium ion AA batteries.
They require special charging means (USBC on the battery itself or a special charger bank) and they don’t fall off on voltage.
Its great to have a perfect 1.5v but it doesn’t wane down. It just dies.
In a TV remote or flashlight it’s great. I use them in devices that provide low battery warning like Xbox controllers and the low battery indicator never goes off. This is annoying if it just dies out of nowhere while gaming.















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