Upgrade the power source of your Asus laptop with this high-quality A53S battery. With a battery capacity of 5200 mAh and 6 battery cells, this Li-Ion battery can provide your laptop with a longer runtime and faster charging time. It is compatible with various Asus laptops such as the K43b, K43E, and K53b models. This black battery is a perfect replacement for your old and depleted battery. It has a voltage of 11.1V and is designed to provide your laptop with a reliable and consistent power supply. It is an essential accessory for your laptop, ensuring that it always runs smoothly and efficiently.