ViewSonic VT103C 10000mAh 22.5W Power Bank Black

Mini 10000mAh power bank with built-in cables

The ViewSonic VT103C is a 10000mAh lithium-polymer power bank that integrates both a Lightning and a USB-C cable so no separate cords are required. At 4.2 in by 2.7 in by .6 in and 165 grams it is thinner than most smartphones and TSA-compliant for carry-on luggage. It targets commuters, frequent flyers and anyone who wants a single pocket-sized device that can charge an iPhone or Android phone without hunting for cables. It is not suited for users who need to power laptops or other high-wattage devices beyond the 22.5W limit.

Built-in cables and digital display remove cable

Two fixed cables — one Lightning, one USB-C — mean you can charge two devices simultaneously without packing extra wires. A small digital display shows the remaining capacity so you know when the bank itself needs recharging. The unit recharges in about three hours via the USB-C input and supports 22.5W Power Delivery output for compatible phones. Buyers who prefer to use their own specialised cables or who need more than two simultaneous outputs will not gain the full benefit of this integrated design.

22.5W USB-C Power Delivery output

The single specification that decides fit is the 22.5W maximum output delivered over the built-in USB-C connector with Power Delivery. This rate can bring a compatible iPhone to roughly 50 percent in 30 minutes and provides about two full phone charges per bank cycle. If your devices require higher wattage for fast charging or you need a larger capacity for multi-day trips without mains access, this model will not meet that requirement.