Anker Portable Charger, 313 Power Bank (PowerCore Slim 10K) 10000mAh Battery Pack with USB-C (Input Only) and PowerIQ Charging Technology for iPhone, Samsung Galaxy, and More.

The Anker 313 Power Bank holds a 10,000mAh lithium polymer cell in a body measuring 5.87 x 2.68 x 0.55 inches and weighing 7.5 ounces, built from plastic and aluminum with a scratch-resistant finish.

At that capacity, the PowerCore Slim 10K refills an iPhone 12 about 2.25 times, a Galaxy S20 roughly 1.6 times, or an iPad mini 5 about 1.2 times before it needs topping up itself. Anker's PowerIQ and VoltageBoost technology read the connected device and adjust output up to 12W, with a trickle-charging mode for smaller accessories. The MultiProtect system covers overcharge protection, short circuit protection and temperature control.

It works with iPhone, Samsung Galaxy and other USB-charged devices. The USB-C port is for input only, and the two input ports cannot run at once. In the box: the power bank, a Micro USB cable for recharging it, a welcome guide and an 18-month warranty. USB-C and Lightning cables are sold separately.

When charging the power bank itself, use either the Micro USB port or the USB-C port, but not both simultaneously, as the device does not support pass-through charging on two ports at once. Plugging it into a wall adapter overnight is the simplest routine, and a full recharge from empty typically takes several hours depending on the adapter wattage used. For storage, keep it in a cool, dry place and avoid leaving it fully depleted for extended periods, as lithium polymer cells hold up better when maintained at a partial charge between uses.

The slim profile, roughly half an inch thick, means it fits comfortably in a jacket pocket or along the side of a small bag without creating a noticeable bulge, which makes it more practical for daily carry than bulkier cylindrical alternatives. This format suits commuters, students, or light travelers who want a single top-up for a phone rather than multi-day backup power. When comparing similar products, the output wattage cap and the number of simultaneous output ports matter most: this unit charges one device at a time efficiently, so users who regularly need to charge two devices at once should weigh that limitation before purchasing.