The Amazon coupon code isn't exactly a secret, but it gets you the highly rated Anker Nano Pro charger at an all-time low price.

The Anker 511 Nano Pro is one of the most compact USB-C chargers you'll find on the market. It can deliver up to 20W power, which is great for smartphones, tablets, and accessories. Right now ...

If, however, you want something even cheaper, you should consider the Anker Nano 20W iPhone Charger. It's just as fast to charge your phone as the Apple one, but saves you a little extra ...