Got an XTAR BC4 battery charger
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USB-C 5v 2a charging for AA and AAA batteries, with a 5v 1a USB-A output - so it's not just a smart charger, but a battery bank too.
Main dealio is that each battery is charged seperately, and it's smart charging not dumb on a timer so they don't need to be in pairs or risk overcharging.
Pretty handy at home for charging batteries for remotes/VR headests, but also for the whole camping shizness since i have USB power from my solar setup.