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Donnerstag, 10. März 2011

Batteries: power supply for laptop

Von laptop, 04:30

In our digital (photo) world these days nothing works without energy. Whether flash, remote trigger, GPS receiver and camera – all applications are dependent on a portable energy source.

Currently have prevailed in the Digital Imaging Li-Ion battery on a broad front against the conventional NiMH round cells, but which are still mostly in accessories like flash units and GPS receivers use. In this the so-called or rechargeable AA battery, the main role. One might assume that the DELL Latitude D620 battery is the highest capacity is really the best option is for use in the photo area. Although this statement is true in principle, but there are a lot of other decision criteria that are to be explained here again.

The first problem that arises when you buy the battery is an indication of the capacity printed on blister and battery. When you next time go into one of the major electronics markets, why not make just even a quick walk through the accessories department. There you will find an unbelievable variety of batteries and batteries. Below you will certainly also charge batteries with the line giving 3000mAh or more! Oddly enough, these batteries are also more favorable than that of the renowned manufacturers, which have also a significantly lower capacity. Who by then no doubt have come is the tricks of the provider actually gone into the trap. Because unfortunately there is currently such that the capacity information is not a uniform policy must be printed the following, but allow considerable discretion. That will probably change (hopefully) soon by the introduction of a European battery posited. But until then, it is the data with caution. Current capacity up to 2800mAh realistic.

In addition to the real capacity also plays a crucial role in resistance to cycling. The often stated 1,000 charge cycles, which are advertised on some packaging or brochures, are far away from any reality. In general, traditional NiMH batteries survive in the household 300-400 cycles – provided there are good batteries, and your charger has a certain quality. To whom this seems too little, which was once to calculate how long he can use the Dell Inspiron 1501 battery when this week he invites! Good batteries usually provide the alleged border services provided over a long period of time. Usually, the capacity drops only after 100x Laden by a few percent. Cheap batteries may very soon lose some of their power permanently. Also deteriorates with increasing use of internal resistance in the cells. Increases the internal resistance in the batteries, reduces the power that can deliver the Dell Inspiron Mini 9 battery to the device. This does not mean that no power is more available in the battery, it can not simply be fed properly. Perhaps the comparison can be a blocked drain the thing clear: this filthy increasingly less and less water to flow through, although it is present. Also here, high-quality batteries compared to the simple products.

For several months there is a new addition to the conventional battery version, which is called in jargon “Low Self Discharge batteries. This new generation differs materially from the classic models. Although these batteries have a lower capacity than their older versions, but they are much less demanding in terms of storage. And this is a really huge advantage! A standard NiMH battery with 2700 mAh capacity lost when it is stored loaded to capacity. It does not matter if the battery is in the device or in a drawer.

What do you estimate how high the power loss in a month? 5 or 10%? There are fewer than up to 25% of its actual capacity! Thus, from the 2700mAh battery within 4 weeks 2025mAh energy storage! A Dell Vostro 1520 battery of the new class with 2500mAh LSD can be stored for a period of 12 months and lost only 20% of its power! Furthermore, the new generation of battery already summoned us can thus be used out of the box. And last but not least, the above-described cycle stability is also significantly higher than the standard battery.

As this new generation price is hardly any different from the normal battery, normally this preference is to give. Even for devices with low power consumption, such as clocks, remote controls and computer mice, which until now the battery was being considered as a reasonable solution, offers the use of the LSD batteries. This new series is already there from many vendors, such as Ansmann (max e), Varta (Ready to use) and Panasonic (Infinium).

To store the battery pack is to basically say that they should not be kept in freezer (as is sometimes claimed), or other obscure places. Ideal would be to charge the batteries in a dry and cool place to store. The Dell Inspiron 1525 battery is also grateful for periodic charging and please be sure to use only batteries along the same brand, type, capacity and age.