Laptop batteries are rated by Voltage (V) and milliampere-hour (mAh)
. Voltage is the rate at which energy is drawn from the battery and represents milliampere-hour capacity battery. Note Corresponds milliampere-hour running time of the Apple A1175 battery.
Batteries with different mAh can be used on the same laptop provided the voltage is the same. The voltage must match the original Dell Inspiron 1520 battery or as recommended by the computer manual. Using a battery with a different voltage setting can seriously damage the laptop. Powers also compatible / Batteries Replacement Batteries are higher than the original manufacturers. This will not damage your laptop, in fact, it simply means that these Batteries in many cases last longer than Batteries original manufacturer. Ask the experts as
PowerUp on Batteries Laptop compatible replacement.
The run time of a laptop battery will vary on individual laptops, based on the applications used (ie high graphics, games), the number of times something is saved or retrieved from hard drive and / or CD Rom, memory notebook, and chemistry and capacity battery. A realistic way to run a Fujitsu t4220 battery is 1.5 to 3 hours. Using devices like a wireless adapter on the laptop also drains the battery considerably.
The life of a battery in normal use is about 500 to 900 charge-discharge cycles. That's about one and a half to three years of battery life for the average user. As the rechargeable battery begins to weaken, the latitude D820 Battery life begins to decline.