Why do alkaline batteries run at 1.5V and rechargeable at 1.2V?

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How is it that they can’t go up to 1.5 V and does this change anything within the electronics? For example, a Game Boy (why that particular example? Beats me!) running at 4.8 V instead of 6?

In: Chemistry

4 Answers

Anonymous 0 Comments

There’s a difference between nominal and peak voltage. Alkaline batteries are 1.5V at full charge, but go down to roughly 1V by the time they are discharged. Rechargable NiMH batteries maintain a more consistent output voltage until they’ve used up their capacity. Most devices are designed to run at 1.2V

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