In recent times, laptop chargers are being easily duplicated. The selection of a good one is very important because the performance of a battery automatically depends on the charger. Hence before buying such a unit you must verify it and check with the user manual. If any of the specifications mentioned are not available then it is better no to buy it. Next you can also check with various user reviews and then decide whether or not to buy a particular unit. Another basic step is to find out that the particular unit you are buying is compatible with your battery or not.
One of the major factors that should be considered for buying these units is whether it is able to withstand extreme heat and cold conditions. Many of these are affected with moisture once they are removed from extremely cold temperature to the normal temperature. This damages the electric circuits within it. Similarly, extreme heat can also hamper the chemical composite of the unit. It must also be made sure that it is able to withstand long hours of charging, which the battery might require. Lithium ion batteries get heated up very easily; hence the chargers must be able to withstand the heat. Most of them are capable of enduring long hours of charging, but some are not.
Technology is so advanced these days that even solar chargers are available in the market; these are known as voltaic solar bags. These solar units convert the heat energy of the sun to electric energy by a process known as photovoltaic effect. With exposure to sunlight for an entire day, the generator of a voltaic solar bag can fully charge a laptop. These bags are protected by water proof panels. Although these bags are quite large and expensive they are totally eco-friendly and help in conservation of energy by using the energy from the sun. Hence, it is becoming common day by day.
These days even timer based chargers are available. The time taken to charge the batteries is noted and the time is then set in the charger. This allows the user to avoid over charging of batteries. Once the laptop is fully charged the charging automatically stops. Another important aspect is speed charging. Speed charging generates excessive amount of heat and hence such units are provided with cooling fans. Suitable batteries that can be charged by these units are NiMH cells.
Thus, there are several ways of selecting a good charger only you need to do your research before buying one.
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