Yangdock E-Commerce via Amazon offers the Lumsing 20W 2-Port 5V USB Wall Charger in several colors (Blue pictured) for $15.99. Coupon code "425OI4NF" drops it to $7.99. Plus, Prime members bag free shipping. That's $14 off and the lowest price we could find, although we saw it for $2 less in May. This charger delivers up to 2.4 amps per port and features folding prongs. Deal ends July 10.