June 1, 2010 19:34 by Ty
If your laptop battery is a few years old and does not last very long when it is unplugged, then you might be due for a replacement laptop battery. Laptop batteries can usually last between 3-5 years with 300-500 discharge /charge cycles.
Hewlett-Packard has released FAQ information on their lithium-ion batteries and smart battery technology which can be found on their HP battery information page. HP battery life quotes, "Under normal discharge loads, Li-Ion batteries have a life span of between 300 and 500 cycles."
Apple offers a similar FAQ information page on their laptop batteries and their long lasting life span which can be found on the Apple battery information page. Apple battery life quotes, "A properly maintained Apple notebook battery is designed to retain up to 80 percent of its original capacity after 300 full charge and discharge cycles."
Between HP and Apple, a typical battery life for today's laptop should be at least 300 discharge / charge cycles, maintaining at least an 80% capacity for up to 3 years. Mileage will vary from laptop to laptop.