Battery Specification: Capacity: 380mAh Voltage: 3.7V Constant Discharge Current: 5.7A (15C) Discharge Cut-off voltage: 3.0VCell Max. Constant Charge Current: 760mA (2C) Charge Cut-off Voltage: 4.2VCell Continuous discharge rate:25C Product Dimensions:3.61.90.75inches Net Weight:0.45oz Charge Time: between 40-50min to fully charge. Battery Compatible with these models: Hubsan X4 (H107C) Hubsan X4 (H107D) Hubsan X4 (H107L) JJRC H22 H6D HS170 HS170C F180C HS170G TOZO Q2020 Syma X11 X11C Walkera Super CP Walkera Mini CP Walkera Genius CP E016H E016F ThisinIntelligent Charger for 3.7V Lithium RC Batteries,chargingbatteries at one time,save your time. Battery Charger Specifications: Input: DC 5V Size: 1.811.380.53 inch Net Weight: 0.39 oz Light weight and super easy to use LED Status: Red Lights on: currently charging Red Lights off: charging complete So when you find the light is not bright,pls don't angry.Maybe batteries are fully. Caution: The battery is charged and discharged once everymonths in the long-term storage process to keep the battery activity. Stop using when it expends or the temperature is over 70°C. Don't over-charge, or over-discharge batteries. Do not bump,disassemble, short circuit and put the battery in fire or water. package include: 5* lipo rechargeable battery*incharger* USB charging cable