Why Are Rechargeable Batteries 1.2 Volt? Rechargeable Batteries FAQ from Energizer.com

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Energizer_® Rechargeable Batteries and Chargers: FAQ Answer

Question:

Why are rechargeable batteries 1.2 Volt?

Answer:

Every battery chemical system has an operating voltage based on their internal active materials (fuel). Rechargeable batteries are 1.2 Volt while alkaline batteries are 1.5 Volt. This, however, should not affect the device service provided by your NiMH battery.

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