Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Venom Vs2786 Dualshock 3 Power Bank - PlayStation 3
Product description: Officially Licensed Sony Product;Fits Securely To The Dualshock3 Wireless Controller;Fully Recharges The Dualshock3 Controller To Provide Up To 20 Hours Of Gameplay On A Single Charge;Li-ion Battery Can Be Recharged Via Usb Using The Ports On The Ps3;Usb Charging Cable Included
Product feature: Officially Licensed Sony Product, Fits Securely To The Dualshock3 Wireless Controller, Fully Recharges The Dualshock3 Controller To Provide Up To 20 Hours Of Gameplay On A Single Charge, Li-ion Battery Can Be Recharged Via Usb Using The Ports On The Ps3, Usb Charging Cable Included
Product price: <div class="a-section a-spacing-none"
Product brand: by Venom
Target attributes: Maximum Output
Answer: attribute: maximum output
value: None
source: None