This Anker 5K power bank for iPhones is cheaper than ever

We, Engadget, are part of the Yahoo family of brands.

When you use our sites and apps, we use cookies to:

• provide our sites and apps to you
• authenticate users, apply security measures, and prevent spam and abuse, and
• measure your use of our sites and apps

If you click 'Accept all', we and our partners, including 239 who are part of the IAB Transparency & Consent Framework, will also store and/or access information on a device (in other words, use cookies) and use precise geolocation data and other personal data such as IP address and browsing and search data, for personalised advertising and content, advertising and content measurement, and audience research and services development.

If you do not want us and our partners to use cookies and personal data for these additional purposes, click 'Reject all'.

If you would like to customise your choices, click 'Manage privacy settings'.

You can change your choices at any time by clicking on the 'Privacy & cookie settings' or 'Privacy dashboard' links on our sites and apps. Find out more about how we use your personal data in our privacy policy and cookie policy.