This high-quality battery is a perfect fit for your Visuo drone XS809 and HC TIANQU XS809W Foldable Quadcopter. With a voltage of 3.7v and a capacity of 900mah, it provides long-lasting and reliable power for your device. Whether you're a hobbyist or professional, this battery is sure to enhance your flying experience. Designed with precision and durability in mind, this battery is ideal for use with various RC model vehicles and toys. Its compact and lightweight design makes it easy to carry and install, so you can conveniently replace your old or worn-out battery. Upgrade your drone with this powerful battery and enjoy longer flight times and improved performance.