many years ago when I used shit that sucked juice like a crackwhore, mainly monster boom box for the beach, these days what really uses batteries, smoke detectors, (2) 9 volts a year, alarm clock (1) 9 volt battery backup, ton of remotes but only need 1 universal one with a few AA or AAA which last a year+, CR2032 for push button car start FOB that last a year+ so don't really use enough batteries to need to recharge them
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