When looking at the mAh on a laptop battery, what does that mean? I have a 4400mAh battery and i'm trying to replace it with another battery. I find batteries that have my series # but it also has other series numbers. should i look out for the mAh?
About laptop battery mAh rating:
MAh (Milliamperes) represents the amount of stored energy in your battery. 1000 Milliamperes = 1 Ampere. The more mAh capacity - the longer your battery will last. 4400 mAh means that the battery can produce 4400 mA for one hour. Similarly, 7200 mAh means 7200 mA for one hour.
In reality, these specifications are for a eight-hour rating, meaning that the 4400 mAh battery can produce 550 mA for eight hours but, comparatively, you can just ratio the ratings, so the 7200 mAh battery will last 60% longer than the 4400 mAh battery
Voltage in a battery refers to the volume of electricity that is delivered to your computer. The amount of energy that comes from your wall outlet is far in excess of what you need to operate the tiny circuits of a computer. Hence your power adapter contains a bar like box that decreases the energy to a much lower voltage rating. Each computer manufacturer designs their computers for the appropriate voltage requirement. Your battery pack will then be engineered to match the voltage of the power AC adapter. Laptop battery packs are composed of several battery cells that are wired together in series. By combining the cells in this fashion, higher volumes of energy can be delivered to your laptop computer. For laptop computers, each battery cell has a voltage rating of 3.6 or 3.7 volts. (3.6V & 3.7V are used interchangeably and refer to the same amount of voltage.)
Cells Voltage/Cell Formula Nominal Voltage
1 cell 3.6V or 3.7V 1 cell x 3.6 or 3.7V 3.6V or 3.7V
2 cells 3.6V or 3.7V 2 cells x 3.6V or 3.7V 7.2V or 7.4V
3 cells 3.6V or 3.7V 3 cells x 3.6V or 3.7V 10.8V or 11.1V
4 cells 3.6V or 3.7V 4 cells x 3.6V or 3.7V 14.4V or 14.8V
mAH stands for milli Ampere-Hours. WH stands for watt-hours. Both are a measure of the total amount of energy stored in a battery. So, the higher the better if you want the laptop to work for a long time on the battery's power. The important thing though is the voltage. You can replace a battery of low mAH or WH with one of higher rating, but if the voltages don't match, at best your laptop will not power on, and at worst, it will smoke and burn when you power it on.
Several batteries from mambate.us have higher mAh ratings than your original battery brand.This does not mean that the battery is not the correct replacement, but rather it is a longer lasting battery.
About the Author:I'm now working in a company which called mambate,its website is www.mambate.us.I like some news about tips belong to laptop computer accessories,such as how to use laptop battery...and i like share it to everyone.
