https://electronics.woot.com/offers/amazon-basics-30w-usb-car-charger-3?ref=w_cnt_wp_0_3 Amazon Basics 30W USB Car Charger(LACC138) for $4.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.