Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: 2x Lumsing 11.1V 5400mAh LiPo Replacement Drone Battery for DJI Phantom 2 and Phantom 2 Vision Intelligent Flight
Product description: Lumsing - Simply Connected, Technology should make our lives simpler, not more complicated; with so many changes and so many new devices, it's hard to keep up. But stress less because we've done the hard work for you! Lumsing combines the latest technological innovations with affordable and stylish electronic accessories to maximize convenience and keep you connected without problems. Make life simple again: Simply Connected!, Specifications:, --Brand: Lumsing --Voltage: 11.2V --Battery Type: Lithium-polymer --Capacity: 5400mAh, 55.94Wh --Battery Capacity Lights: 25%, 50%, 75%, 100% --Flight Time: Up to 30 minutes --Status: Fully decoded --Product Warranty: One Full Year, Fit for DJI Phantom 2 Vision: DJI phantom 2 DJI phantom 2 Vision DJI phantom 2 Vision+, Package Include: 2 x Lumsing® Replacement Battery for DJI Phantom 2 Drones, Note:, 1. Batteries must be charged using a DJI approved adapter. 2. Never leave the battery unattended during charging. 3. Do not charge the battery near flammable materials or on flammable surfaces such as carpet or wood. 4. Do not charge battery immediately after flight. 5. Do not charge the battery until it cools down to near room temperature. 6. The battery cannot be changed outside of the temperature range of 0-40. 7. If the power on/off button of the Intelligent Flight Battery is disabled and the battery cannot be fully discharged, please contact a professional battery disposal/recycling agent for further assistance
Product feature: Brand New | 11.1 Volts | 5400mAh | 55.94Wh | LiPo | White, The flights will be lasting about 30 minutes with one single charge, Compatible with Phantom 2 drones only; will not work with the Phantom 1 or Phantom 3, Built-in 4 LED indicator lights display remaining battery capacity, 30 Days money back and 1 Year Warranty
Product brand: Lumsing
Target attributes: Battery Type
Answer: attribute: battery type
value: lipo
source: product title
attribute: battery type
value: lithium-polymer
source: product description
attribute: battery type
value: lipo
source: product feature