This is translated with Google translate and will need correction
Batteries can be used once and can’t be recharged. Rechargeable (or secondary) batteries are batteries that have the format of a disposable battery and can be charged. These batteries are ‘dry batteries’ they do not contain liquids.
The first generation of rechargeable batteries, using nickel cadmium (Ni-CD), has a lower voltage (1.2 volts) than the single-use batteries (1.5 volts). The next generation of rechargeable batteries is based on Nickel-Metal Hydride (NiMH) and deliver 1.4 volts. This makes the NiMH batteries usable for many more devices. These are used the most. Besides the most used NiMH batteries there are several types that are usable for specific purposes.
Rechargeable batteries can be recharged up to 1000 times. Compared to using a one-use battery this saves a lot of resources. The energy provided by rechargeable batteries is many times cheaper for the user than that of a disposable battery.
Ni-Cd batteries will hardly be supplied any more. Avoid them, because the cadmium is extremely toxic and should not enter the environment. When it comes to purchasing replacement rechargeable batteries use NiMH batteries only.
The capacity of a rechargeable battery is specified in mAh (milliampere-hours). Is there on a rechargeable for example stated 2000 mAh then this means that for one hour at a current of 2000 mA can be supplied (or 2 mA for 1000 hours).
An empty rechargeable battery is useless. The tendency is to take a full non-rechargeable battery. By investing in a good charger and a storage system for rechargeable batteries immediately upon purchase, you can keep some loaded rechargeable batteries in stock. It is a matter of discipline to keep the correct type of batteries in stock, charged, for the devices in the home that require them.
Rechargeable batteries that seem to be at the end of their life, can sometimes be discharged in a certain way and then loaded to stay useable longer. Read the operating manual of the charger.
Disposal: saving resources
At the end of the lifetime of the rechargeable battery it must be disposed separate from normal household waste. The collection is done by the supplier or municipality. Make sure the battery is fully discharged before it is returned, so there is no risk of short circuiting.
--Wikigreen-en 17:21, 18 March 2012 (CET) CvO-CG-EvO
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