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LowerPriceUSA’s amazon store is offering 20% off this 3 port car charger when applying promotion code C9MWB357 at checkout. I ran some searches and didn’t find this offer posted.

Bolse USB Car Charger (27W / 5.4Amps), Provides Maximum Power For 3 Devices At Once With SmartICTM Technology [amazon.com]
Price = $ 10.99 – 20% discount (code: C9MWB357) = $ 8.79
Free 2 day shipping for prime members, other face shipping charge on orders <$ 35

from the product page:

• Bolse 3-port (Triple / Multi Charger) USB Car Charger provides maximum speed to charge mobile devices, tablet and music players simultaneously on the trip. This Portable Fast Car Charger charges your Apple iPhone 6, 5, 5s, 4, 4s, iPad 5, Mini, MP3 Players, iPod touch 4th generation, Samsung galaxy S5, S4, S3, Tab 2.0. Nexus 4, htc, lg, Amazon Kindle.fire HD, Motorola, Tablet, Cell Phone, blu electronic cigarette or other android devices.
• SmartIC Technology – The way the SmartIC technology works is by distributing the perfect charge to each mobile device individually and simultaneously, automatically recognizing what you have plugged in with our micro smart chip. Once the battery is full, charging will automatically stop for that specific device.
• Use your existing USB charging cables to charge most USB powered devices; Sophisticated circuit design with over-heated, over-current, over-charging protection
• Made with high-quality durable plastic and aluminum outer shell
• Easy-to-see LED confirms whether USB charger is properly connected. Charging will be automatically stop when battery is full. Input: DC 12 -24V; Power: 27W