Please ensure the product(s) that you are going to buy fits the brand, model and part number of your device.

Specifications:

Battery Type: Li-ion
Color:  
Dimension:  
Capacity:  4400mAh
Volt:  14.8V
Replace battery part number: 
ASUS
A42-M7 70-N9Q1B1100 90-N9Q1B1100
This battery is also compatible with the following models : 
ASUS
ASUS M7, M7V, Z70V, Z7000V, Z7100V, Z71V Series;
Asus Z71, Z71A, Z71V, Z71Vp, Z7100, Z7100A, Z7100V, Z7100Vp Series
ASUS Z7 Z70 Z7000 Z7000A Z7000N Z7000NE Z7000V Z7000VA Z70A
Z70N Z70NE Z70V Z70VA series
ASUS Z71 Z7100 Z7100A Z7100N Z7100NE Z7100V Z71A Z71N Z71NE Z71V series
ISSAM SmartBook i5500S, i5500V

Understanding your batteria ASUS A42-M7 70-N9Q1B1100 90-N9Q1B1100 M7 M7V akku  Needs

What is the run time of  batteria ASUS A42-M7 70-N9Q1B1100 90-N9Q1B1100 M7 M7V akku ?

laptop batteries have two main ratings on them: Volts and Amperes. Because size and weight of laptop batteries is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Milliamperes. One thousand Milliamperes equals 1 Ampere. When buying a battery, select batteries with the most Milliamperes (or mAh). Batteries are also rated by Watt-Hours, perhaps the simplest rating of all. This is found by multiplying the Volts and the Amperes together. For example:

14.4 Volts, 4000mAh (Note: 4000mAh is equal to 4.0 Amperes).

14.4 x 4.0 = 57.60 Watt-Hours

Watt-Hours signifies the energy needed to power one watt for one hour. This laptop battery can power 57.60 watts for one hour. If your laptop runs at 20.50 watts, as an example, this laptop battery could power your laptop for 2.8 hours.

How can I maximize the performance of my batteria ASUS A42-M7 70-N9Q1B1100 90-N9Q1B1100 M7 M7V akku?

There are several steps you can take to help you get maximum performance from your laptop battery:

Prevent the Memory Effect - Keep the laptop battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the memory effect.

Keep the laptop Batteries Clean - It’s a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and the portable device.

Exercise the Battery - Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a laptop battery has not been used for a long period of time, perform the new battery break in procedure described above.

Battery Storage - If you don’t plan on using the laptop battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. NiCad, NiMH and Li-Ion batteries will self-discharge during storage; remember to recharge the batteries before use.

Upgrade my batteria ASUS A42-M7 70-N9Q1B1100 90-N9Q1B1100 M7 M7V akku from NiMH to Li-Ion

NiCad, NiMH and Li-Ion laptop batteries are all fundamentally different from one another and cannot be substituted unless the laptop has been pre-configured from the manufacturer to accept more than one type of battery chemistry. Please refer to your manual to find out which rechargeable battery types the laptop device supports or use our Battery Finder above to find all the compatible laptop batteries for your device. It will automatically list all of the battery chemistries supported by your specific device. If your device does allow you to upgrade the battery from NiMH to Li-Ion, you will typically get longer run times.

For example, if your laptop uses a NI-MH battery that is 9.6 Volts, 4000mAh and the new li-ion laptop battery is 14.4 Volt, 3600mAh, then you will obtain longer run time with the li-ion battery.

Example.

Li-Ion: 14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
Ni-MH: 9.6 Volts x 4 Amperes = 38.4 Watt Hours
The Li-Ion is stronger and has longer run time.