Will this inflate a full-size car tire from zero, or just top-off pressure?

This is a portable inflator designed for emergency and maintenance use. For full tire deflation refills, a standard air compressor is more practical—use this to quickly top off pressure or handle smaller inflatables.

How do I know which adapter fits my tire valve?

The included adapters cover standard car tire valves (both Schrader and Presta), sports equipment, and small inflatables. Test-fit the adapter before inflation to ensure a snug seal and prevent air loss.

What kind of battery does it use, and how long does a charge last?

Battery type and runtime specifics aren't detailed in the product data—check the manual or contact support for charging time and how many tire sessions you'll get per charge.