The Anker Advantage: Join the 20 million+ powered by our leading technology. Charge Forward: Charge any Qi-compatible device 10% faster than other 5W wireless chargers, using highly efficient components and an advanced chipset. Case-Friendly: Charge straight through even extra-tough cases. (Metal attachments or credit cards will interfere with charging.) Certified Safe: Eliminate safety concerns with overvoltage protection, temperature control, foreign object detection, and more.