:: FAQ on rechargeable batteries
:: Questions on how to look
after rechargeable batteries
:: Questions on specific products
:: Questions on types
of rechargeable batteries
:: Special questions
:: On the rechargeable
batteries FAQ
:: Rechargeable batteries
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Does quick-charging damage my battery?

What is cycling?

 

How long should I leave my rechargeable batteries in the charger?

How should I look after a rechargeable battery?

Frequently askedquestions

 

Can rechargeable batteries really manage 1000 times?

Questions how to look after batteries and rechargeable batteries

Here you can findquestions and answers on how to look after batteries ansd rechargeable batteries


Should you take the batteries out of the device if it is not going to be used for a longer period?

Yes. There can still be a small current flowing in devices that have been switched off , and this can cause a deep discharge over a longer period of time that damages the battery and, in extreme cases, destroys it.

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How should I look after a rechargeable battery?

This depends on the system. For example, a NiCd rechargeable battery must always have been completely discharged each time before it is recharged. This is best done by using a charger with a discharge function. All rechargeable batteries benefit from occasional "cycling": The rechargeable batteries are discharged and recharged several times in succession. This restores the full capacity that had been lost as a result of the memory effect.

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How quickly can a battery be recharged?

That depends on the type of charger used: The greater the charging current of the charger, the more quickly will the battery be fully recharged. Normal charging takes around 10 to 16 hours (typical "overnight charging"). Quck0charging can be done in around 2 to 3 hours, ultra-fast chargers can even recharge a battery within around 30 minutes. The exact details can be found in the instructions for use of the relevant chargers.

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How long should I leave my rechargeable batteries in the charger?

With modern, electronically controlled chargers there is no danger if you leave the batteries in the device for several days, for example. They switch off when the battery is fully charged or switch over to a lower current maintenance rating. Rechargeable batteries can be damaged or destroyed if they are not taken out in time from a charger that does not have reliable switching off. The maximum charging duration can be calculated as follows, given that there had previously been a full discharge:

NiCd batteries:
(capacity of the battery x 1.4) : Charging current of the charger

NiMH batteries:
(capacity of the battery x 1.5) : Charging current of the charger

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