- How many times can it charge a phone?
- About twice for a typical phone with a 4,000-5,000mAh battery, less after cable and conversion losses.
- Does it fast-charge an iPhone?
- Yes, over USB-C with USB-PD at up to 20W, which fast-charges recent iPhones. You need a USB-C to Lightning or USB-C cable.
- Can it charge a laptop?
- Only slowly. 20W is below what most laptops need, so it suits phones, earbuds and small accessories rather than laptops.
- Can I charge two devices at once?
- No. There is a single USB-C port, so only one device charges at a time.
- How do I recharge the power bank itself?
- Through the same USB-C port with a USB-C charger. A full recharge takes a few hours depending on the charger's wattage.
- What is in the box?
- The power bank itself; a charging cable is not guaranteed, so check before buying and plan on using your own USB-C cable.
- Where is the Energizer Power Bank 10000mAh Portable Charger cheapest?
- At Best Buy, for $29.99, as of our latest check.