SJRC S70W Lithium-ion Battery 7.4v 2,500mAh.
External micro-USB port can be charged by itself or while connected to drone.
LED Charge level indicator.
My overall experience was very good. Simple and clear website, the buying process is straight forward, and the delivery equally efficient.
And the drone, off course, is exactly what I was expecting for.
quick and easy ordering a replacement battery