Some Usefull Informations Laptop Batteries:

• What is the run time of our e-store.net.au Laptop Battery?
  Laptop Battery have two main ratings on them: Volts and Amperes. Because size and weight of Laptop Battery is limited when compared to larger batteries such as car batteries, most companies show their ratings with Volts and Mill amperes. One thousand Mill amperes equals 1 Ampere. When buying a ,laptop battery, select the batteries with the most Mill amperes (or Ah). 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.

   Here are some tips for laptop battery care and use

1. A brand new laptop battery comes in a discharged condition and must be charged before use. Upon initial use the battery may require two to three charge/discharge cycles before achieving maximum capacity.
2. If the laptop battery is going to be used for lest than half a month, it is recommended to remove from the device and stored in a cool, dry, clean place.
3. 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 laptop battery memory effect.
4. A laptop battery will eventually lose its charge if unused. It may therefore be necessary to recharge the laptop batteries after a storage period.
5. It's a smart idea to clean dirty the laptop batteries contacts with a cotton swab and alcohol. This helps maintain a good connection between the laptop battery to the notebooks and the portable devices.
6. Do not leave the laptop batteries dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break-in procedure described above. See Apple's Battery Care page.
7. 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.