When considering a lightweight, foldable electric wheelchair with shock-absorbing features and a range of 15-18 kilometers, it's essential to evaluate specific models that meet these criteria. Here are some options to consider:
1. WHILL Model C2
Weight: Lightweight design
Features: Patented front omni-wheels with 10 individual rollers, rear wheel suspension for shock absorption, customizable options
Range: Approximately 18 kilometers (11 miles)
Highlights: Compact size, tight turning radius, and a comfortable ride due to advanced suspension systems. 
WHILL: INNOVATIVE PERSONAL MOBILITY
2. Camel Hope YE246
Weight: Lightweight construction
Features: 8-inch caster wheels with self-absorbing ability, foldable design
Range: 15-18 kilometers
Highlights: Designed for portability and comfort, suitable for daily use.
3. Reyhee Roamer Folding Electric Wheelchair
Weight: Durable yet lightweight
Features: Four solid wheels providing stability, suitable for smooth flat surfaces or grassy terrains
Range: Standard range suitable for daily activities
Highlights: Built for endurance and stability, offering a dependable base for various terrains.
When selecting the ideal wheelchair, consider factors such as weight capacity, battery life, terrain adaptability, and user comfort. It's advisable to consult with a healthcare professional or mobility specialist to ensure the chosen wheelchair meets individual needs and provides optimal support.