This is a replacement E-flite USB 1S, 500mAh LiPo Charger, and is intended for use with the Blade 180 HD BNF Micro Quad-Copter, as well as other applications requiring a 1S charger with a JST connector.

Specifications:
Chemistry Type: LiPo (Lithium Polymer)
Number of Cells: 1S
DC Input: 5.0V - 500mA
DC Output: 4.2V - 500mA