Buyer’s guide

What battery do I need for my laptop?

There is no laptop without battery. It is only the efficient battery – not the size or weight of the device – that makes a portable computer a fully mobile tool, allowing you to take full advantage of its functionality. Therefore, when the original battery fails, a new one must be purchased. Don’t worry, it’s not a complicated process, and our manual will guide you step by step to finding a new battery that will give your laptop a second life.

All batteries have a specific lifetime. The cells are subject to the natural process of aging, which means that their efficiency and capacity is decreasing, they are work less and less time, and eventually it becomes impossible to use the computer without the power supply connected. Then the portable computer actually becomes a desktop computer, and because of the mobility feature we decided to use it, not a desk box.

The first and most important step in restoring your laptop’s original functionality is to choose the right battery.

What to pay attention to when choosing the right battery for your laptop?

Contrary to popular opinion among mobile computer users, it is not enough to know the brand or model of a laptop to choose the right battery. The most important parameters that we should take into account when not wanting to make a mistake when buying a battery are: its original designation, voltage and capacity.

I. Battery designation (model)

Where do you look for the battery designations and what kind of character does it have?

The battery designation is always on the battery itself. To identify it, simply remove the battery from the computer and check the rating label. Alongside other information, such as the country of manufacture or warning signs, there is an individual battery code. Depending on the computer manufacturer, this will take the form of different letter and number configurations. Below are the most common patterns of markings:

  • for the Apple brand: it will be in the form of AXXXX characters – such as A1185;
  • for Acer: ASXXXXX, such as AS07A31;
  • for Asus: AXX- (e.g. A32-M50);
  • for Dell: a sequence of letters and numbers that varies according to the computer generation (e.g. GW240, but also J1KND);
  • for Fujitsu-Siemens: Battery Pack code, e.g. 3S4400-S1S3;
  • for HP/Compaq brands: two ways of marking:
    (a) HSTNN-XXXX (e.g. HSTNN-UB72);
    (b) a sequence of 9 digits, the last three of which are preceded by a hyphen – e.g. 485041-001;
  • for Lenovo/IBM: FRU and ATM numbers, e.g. 42T4504;
  • for MSI brand: BTY-XXX – e.g. BTY-L74;
  • for Samsung: AA-XXXXXXXX – e.g. AA-PB9NC6B;
  • for Sony: code VGP-BPSXX – e.g. VGP-BPS13;
  • for Toshiba: the characters PAXXXX- (e.g. PA3534-1BRS).

II. Battery voltage

Finding a battery with the same code as the original one is not yet the end of the selection process. The second parameter we should pay attention to when selecting a battery is its voltage. Depending on the energy demand of the computer, manufacturers equip them with batteries with 10.8V (or 11.1V – they are compatible) and 14.4V (or 14.8V – they are compatible). The voltage value is closely related to the number of cells in the battery – usually a 10.8V battery has 6 cells, a 14.4V battery – 8 cells.

Checking the battery voltage parameter is an important step. Although the dominant type of voltage for laptop batteries is 10.8V, manufacturers sometimes release computers with higher voltage batteries. Additionally, it is complicated by the fact that one battery model (e.g. the popular AS07B31 battery) can have two versions of voltage, lower and higher. Importantly, batteries with different voltages cannot be used interchangeably – installing a lower-voltage battery for a computer requiring a higher-voltage battery, and vice versa, the computer will not work.

The voltage value can be checked as easily as its designation – it is on the rating sticker, often near the name of the battery model and appears under the international V (voltage) sign.

III. Battery capacity

The third parameter worth paying attention to when making a choice is battery capacity. It is usually expressed in two units: mAh or Wh (milliampere-hour or watt-hour).

Strictly speaking, mAh is the correct measure of cell capacity. The record 1Ah means the ability to supply 1A current to the device for 1 hour. Wh, on the other hand, is a value that actually determines how long we can expect the battery to run (if we know the laptop’s power requirement in watts, for example: with a requirement of 20 watts, a 48 Wh battery will power the computer for about 2.5 hours).

The principle is simple – the higher the value of mAh/Wh, the longer the working time we will be able to obtain.

Batteries with higher capacity

The most common capacity of the original battery is 4400 mAh (48 Wh), usually achieved on the basis of 6 cells (at 10.8V). This battery capacity does not always allow for satisfactory operating times. For more demanding users there are batteries with increased capacity available. Increasing the capacity consists in adding another set of cells to the existing ones and proportional increase in capacity – for 9 cells the capacity will be 6600 mAh (at 10.8V), for 12 cells the capacity will increase to 8800 mAh (at 10.8V). Using a larger capacity battery means longer operating times (compared to a standard 4400 mAh battery) by 1.5 times (in the case of a 6600 mAh battery) and as many as 2 times (if a 8800 mAh battery is used).

It should be remembered that the increase in the number of cells in a battery most often involves the issue of larger battery dimensions. Such batteries usually have an extension in one of two options: down (the battery then has a footer) or back (the battery will protrude outside the computer casing in its rear part). The solution of extending the battery downwards finds many supporters among users of mobile computers, as by lifting the computer about 2 cm upwards it allows better air circulation underneath and reduces the temperature of the laptop.

The ability to reach for a larger capacity battery is one of the main arguments for using an equivalent battery in your computer – original batteries are not available in a larger capacity than they are in your computer.

Another way to get more capacity than the nominal one in batteries is to use better quality cells. We offer such batteries – these are PRO and ULTRA versions of Green Cell. PRO version is equipped with original Samsung cells. Thanks to this, while maintaining standard dimensions, a capacity of 5200 mAh was obtained. An additional advantage is the increased service life – it is about 700 charging cycles (standard is about 500).

The best quality batteries can be found in ULTRA series. By using the best quality Panasonic cells we have achieved 6800 mAh capacity in batteries of the size of the original models. The lifetime of ULTRA batteries is also at the highest level – it is about 1000 cycles.

What if we do not have the original battery?

There are situations when we do not have a factory-made battery. This does not pose any problem – our compatibility lists are as well worked out as possible. This allows you to easily search for the battery by laptop model. Of course, there may be a mistake, but in our shop the risk is minimal. In addition, we offer the possibility of free return and exchange up to 30 days. In case of a mistake, it is possible to replace the product with a suitable one at no extra cost.

All available models are in stock and each order placed before 15:30 is sent the same day! We know how important it is to have a new battery as soon as possible, so we make every effort to ensure that the shipments arrive as soon as possible.

Summary

As you can see, choosing a battery is not a difficult task and we hope that this guide will help you choose the right product. If in doubt, we encourage you to seek the advice of our employees, who will provide their expertise both by phone and by e-mail.

Author: Michał Bródka

 

Mr Battery

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