Pisen Electronics via Amazon offers its Pisen 10,000mAh LED Dual-USB Portable Battery Pack in several colors (Red pictured) for $23.99. Coupon code "K56E5KS6" cuts it to $16.79. Plus, Prime members receive free shipping. That's a buck under last week's mention and the lowest price we could find by $3. It features a 3-digit LED battery level indicator, dual USB smart-charging ports (with 2.4-amp total output), and aluminum alloy shell. Deal ends January 31.