Weme via Amazon offers the Alxum 24W 2-Port USB Compact Car Charger for $8.99. Coupon code "RG6KRJMQ" cuts it to $7.19. Plus, Prime members bag free shipping. That's tied with our June mention at $2 off list and the lowest price we could find. It features up to 4.8-amp power output and can charge two devices simultaneously. Deal ends September 30.