Amazon offers the GreenLighting 2,000mAh Solar Window Cling Portable Battery Pack for a discounted price of $34.99 plus free shipping on orders above $49, or with Amazon Prime. Limited time offer. You save 42% off the price! That's the lowest price we could find.

• 0.4 watt solar panel will absorb energy from sunlight to recharge the internal 2000mAh Lithium-Ion battery
• LED illuminates while internal battery is being charged
• 4-in-1 charging cable includes a micro, mini, 30 pin, and 8 pin connector