CHF15.90 CHF3.98/1pcs.
Varta Recharge Accu Power
4 pcs., AA, 2600 mAh
Question about Varta Recharge Accu Power
Why do rechargeable batteries actually have fewer volts than normal AA (1.2 vs. 1.5)?
Both a battery and an accumulator ultimately consist of one or more galvanic cells/elements. Their voltage is determined by the electrode materials used. For an alkaline-manganese battery this is 1.5V, for a nickel-metal hydride battery 1.2V.
The electrode materials also determine whether a battery is rechargeable, what capacity it has and how loadable it is. Since it has obviously not yet been possible to find a combination that is rechargeable and at the same time has a reasonable capacity with a nominal voltage of 1.5V (and is affordable, safe, etc.), the NiMH batteries now have 1.2V.
In short: there is no other way.
See e.g. https://de.wikipedia.org/wiki... engineering)
The electrode materials also determine whether a battery is rechargeable, what capacity it has and how loadable it is. Since it has obviously not yet been possible to find a combination that is rechargeable and at the same time has a reasonable capacity with a nominal voltage of 1.5V (and is affordable, safe, etc.), the NiMH batteries now have 1.2V.
In short: there is no other way.
See e.g. https://de.wikipedia.org/wiki... engineering)
Chemistry. The same materials are (logically) not used. Hence the different voltage.