Question: are nimh and alkaline batteries interchangeable?
Answer: NiMH can replace alkaline batteries in most devices and applications. THE BAD: NiMH batteries will self-discharge when not in use, which means if they are not charged semi-regularly, they could discharge beyond revival. ... NiCad batteries can be recharged up to 1000 times (2 - 4 times as many cycles as NiMH).