This brand new ASUS K53 Extended Run replacement laptop battery features lithium-ion cells. Li-ion battery technology provides longer run times with less weight. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This laptop battery replacement is 100% compatible with the original battery specifications and is individually tested and backed by a 2 Year warranty. If your laptop has a 6 cell 5200 mAh battery with a rating of 11.1 volts, you can still use this higher capacity battery which has a rating of 10.8 volts. Your AC power cord provides 19 volts of power from the wall, your laptop only needs 10-11 volts of power to run. The added voltage enables your laptop to run as well as have the battery recharge at the same time.

You can expect about 3-5 hours of run time with this computer battery when new, depending on your energy use.

Like all Li-ion primary batteries, your run time will decline over time.

This battery replaces all ASUS K53 series laptop batteries with a full list at the bottom of the page.

Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.