With an Anker wireless power bank, you can charge your smartphone without hassle with cables. You can attach magnetic power banks to the back of your iPhone or Android smartphone with a magnetic case. This way, the wireless Anker power bank remains sturdily in place. Most wireless Anker power banks have a 10,000mAh capacity. With this, you can fully charge your smartphone twice. With a wireless power bank, you can charge your smartphone less fast than with a wired power bank.