Razer going to release in 2017 March in North America and Europe a 12 800 mAh power bank. You can use it to charge your smartphone, tablet, portable devices and even your laptop (specially the Razer Stealth Blade).
According to the announcement the price will be 149.99 USD (without tax). Japanese / Asian version release is not announced. More information can be found on the official website of the Power Bank.