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: Hitachi DS18DFLS 18V HXP Lithium-Ion 1.5 Ah Drill Driver with Drill Bit Set
Product description: Hitachi's 18V HXP Lithium-Ion 1.5 Ah Drill Driver with Drill Bit Set is powered by a long-lasting 1.5 Ah Lithium-ion slide battery. Packing a powerful punch, it is efficient and easy to handle. Variable-speed tool provides professional power in most compact, lightweight, and ergonomically designed body. Two-speed transmission controlled by one-touch speed knob, allows a choice between 0 - 400 or 0 - 1,200 RPM Includes: 18V HXP Lithium-Ion 1.5 Ah Drill Driver with Drill Bit Set (Open Box) - DS18DFLS.
Product feature: Best in class-power to weight ratio for compact drills, 22-stage clutch for high torque and/or precision driving, Belt hook with integrated bit holder saves time and adds convenience, Two-piece magnet motor produces to power through the toughest jobs, Soft, non-slip elastomer grip for increased user comfort and safety
Product brand: Hitachi
Target attributes: Amperage
Answer: attribute: amperage
value: None
source: None