I have seen different types of battery cells like 6, 9 and even 12 cells, what are they?

This number indicates the number of individual cells that are used to make up the laptop battery. The more cells, the greater the battery capacity. Generally, the battery with the fewest cells is the standard battery that comes with your laptop. 9 or 12 cell batteries are extended and higher capacity batteries that will give you a much longer run time on a single charge.

Before buying a battery with more cells, you should weigh the benefits against the added size and weight, especially if you carry your laptop with you all day.

Is the grade of the battery cells important?

In general, a laptop battery will provide between 400 and 800 life cycles depending on the use and quality of the battery. Poor quality or poorly manufactured batteries will provide fewer cycles and a shorter overall life.

  • Highest quality batteries (Grade A cells): 12-18 months
  • Medium quality batteries (grade B cells): 10-15 months
  • Low quality batteries (grade C cells): 5-10 months

How long will the new battery for my laptop last?

Actual battery operating time depends on the power demands made by your computer, such as the applications you are running and your laptop settings. Our replacement batteries will last the same or longer than the original battery that came with the laptop when it was new (with the same capacity). Generally, a standard 4400 mAh will last between 45 and 90 minutes. You can calculate how long a higher capacity battery will last based on the difference in mAh. A 7200 mAh battery will give you 64% more runtime, and a 10400 mAh battery will give you 136% more runtime than a 4400 mAh on a single charge.

How long does a laptop battery last? When should I consider replacing mine?

All rechargeable batteries wear out with time and use. As time and cumulative usage increases, performance will degrade. For the typical user, a noticeable reduction in runtime will generally be seen after 18 to 24 months. For an advanced user, the reduction in runtime can generally be experienced before 18 months. We recommend buying a new laptop battery when the runtime does not meet your needs.

What are watt-hours, volts, and milliamp-hours?

Each battery has three ratings which are watt-hours, volts, and milliamp-hours.

Watt hours (wHr) it is a unit of energy equal to the work done by a watt acting for one hour and equivalent to 3,600 joules. The wHr is a calculation of voltage and mAh.

Milliamps (mAh) It is a unit of measurement of electrical energy over time. Represents the total amount of energy stored in your battery. The mAh rating is also a measure of how many hours a battery can last. The higher the amp hour rating of a battery, the longer the battery run time. It is not uncommon for some of our batteries to have higher or lower amperage ratings. This will not cause incompatibilities.

Voltage (v) it is the amount of electricity that is delivered to your computer. The amount of power from your wall outlet is more than your laptop needs to run. Therefore, a power adapter contains a box-shaped bar that will decrease power by lowering the voltage rating. Every computer manufacturer designs their computers for the appropriate voltage requirement. Your battery pack will then be designed to match the voltage of the AC adapter. Laptop battery packs are made up of several battery cells that are connected in series. While the voltage of the high-capacity battery may not be identical to that of the original battery, the voltages should be within a reasonable range. Any replacement laptop battery should always be within +/- 1V. Anything above that range can cause incompatibilities.

Tips: The above content comes from https://en.laptopbatteryshop.nl/help/battery-faqs.htm.

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