This lithium polymer battery is a 5400mAh 3 cell 11.1 volt battery for the Yuneec Typhoon Q500 4K, Typhoon Q500+, and Typhoon G drones. This is a genuine Yuneec product. The handle allows for easy installation and removal. After-market batteries are not recommended by the manufacturer, or Terrestrial Imaging. If an accident happens while using an after-market battery, your warranty will be voided. These batteries are quality and will last many flights so long as you take proper care of them.