Try lithium-based AA/AAA rechargeables. These worked wonders for my finicky Instax Camera which refuses to use regular NiMH AAs because their voltage is too low.

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baq 3 days ago | parent [-]

The issue with these is the low battery warning. Once the voltage starts dropping you don’t have much time to notice. Not a problem for active devices, but things like door sensors may give you just a few days between 80% and dead.

	▲	imp0cat a day ago \| parent [-]
		Absolutely. Different battery manufacturers use different discharge profiles, some gradually lower voltage in a few steps, others may just die with almost no warning, so it might take a few tries before you find a brand that works for your device.