HP F1739A Laptop Battery from buy-laptop-batteries.com

Compatible And Rechargeable Laptop Battery is an ideal accessory for your laptop. High quality HP laptop batteries can bring far more enjoyment when using your computer. HP F1739A laptop batteries are based on years of research and development and under the guideline of ISO9001-2000 quality system and CE and UL certified.
1) Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit. To maintain the optimum performance of the HP F1739A Laptop Battery, it is highly recommended to circle (fully discharging and recharging) it at least once a month.

2) It is normal if a new HP F1739A battery gets warm when being charged or used. However, please pay special attention laptop battery life and recharge times will vary based on many factors including screen brightness, applications,features, battery conditioning, power management and other customerpreferences.

What is the run time of Buy-Laptop-Batteries's laptop battery?

Please compare with your Computer battery's capacity first, for example, 4400mah may have double running time than 2200mah (actual running time may different depends on the program using on your computer).

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 Laptop batteries, most companies show their ratings with Volts and Milliamperes. One thousand Milliamperes equals 1 Ampere. When buying a laptop battery, select laptop batteries with the most Milliamperes (or mAh). Laptop 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.