Laptops have limited battery life and an average battery life of three hours. The operating time depends on the tasks for which we use the computer. For long-term operation, a powerful energy source is required – a power supply unit, also called a charger.

First of all, you need to pay Laptop Chargers on Jiji Nigeria the charger’s manufacturer, and it is better to give preference to the original charger than the Chinese counterfeit. Because all Chinese chargers are as cheap as possible, there are no elements that protect the device, filter power surges, poor quality wires, and the case’s quality. You can feel this by taking the original device and the copy in your hand – they will differ in weight. But it would be best if you did not focus only on importance because the Chinese here have learned to cheat and sometimes add foreign objects inside for weight.

Also, some companies have protection and may not charge the laptop if a non-original charger is connected, for example, HP and DELL. If, in the case of HP, they figured out how to bypass the protection, then for DELL, there must be a special DALLAS chip in which the charger ID and its power are stitched.

The plug must match the make and model of the laptop. Each laptop manufacturer has its standard jacks for connecting a charger. Each company has several varieties of “standard” plugs. Very rarely, chargers for one company can be suitable for another company.

Three metrics are essential:
input and output voltage;
The input voltage is measured in volts (V) and indicates the voltage supplied to the power supply from the mains. Please note that standards differ from country to country, so power supplies have different input voltage ratings. For Ukraine, the input voltage is 220-240 volts.

The output voltage is the most important indicator when choosing a power supply. It shows the voltage that will be supplied to your laptop. It must match the value indicated on the computer. This indicator may differ from that indicated on the computer by no more than 0.5 volts. At low values ​​(less by 1 V), the laptop may not turn on. If the supply voltage is exceeded by 1 V or more, the risk of burning the computer is higher.

input and output current;
Output current is measured in amperes – “A” mark. It is worth considering that if the output current is less than the laptop requires, then you risk burning the charger. If the charger is of poor quality, it can catch fire. Therefore, it is recommended to choose a charger where the output current corresponds to that indicated on the laptop or more than it. The bigger it is, the better.

charger output power
Power output is measured in watts (W). It is an indicator that characterizes two parameters at once, the current strength and the output voltage.

We look at the required output voltage and current indicated by the manufacturer on a sticker, often a sticker on the bottom of the case, or under the battery, sometimes at the charger connector. In our case, on the bottom cover.

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