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Batteries


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#1 biferi

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Posted 07 March 2014 - 10:37 PM

I am looking for Rechargable D Batteries.

 

And the ones I see are just 1.2 V but a none Rechargable Battery is 1.5 V and all Batteries from  AAA   AA   C   D are the same Voltage.

 

But when I look to Buy Rechargable Batteries they are 1.2 Volt why?

 

I will be doing some projects and just puting them in my Radio and things like this thanks.



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#2 Platypus

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Posted 07 March 2014 - 10:48 PM

The chemical system used in most rechargeable cells gives a nominal 1.2V, in contrast to the chemical reaction in carbon-zinc or alkaline batteries which produces nominal 1.5V. The nominal voltage is under load, freshly charged and under light load, the voltage will be higher than 1.2

 

If you have an application that will not handle the lower voltage supplied by rechargeable cells like NiCad or NiMH, rechargeable alkalines do offer a higher nominal voltage, but it will drop with heavy use. If they are always used to no less than 50% then recharged, they can maintain 1.3V to 1.4V, but will give less duty cycles than other rechargeables.


Edited by Platypus, 07 March 2014 - 10:49 PM.

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