AstroAI L7 Tire Inflator Portable Air Compressor,150 PSI Cordless Bike Pump

Why it's worth it

The L7 weighs less than a pound and still reaches 150 PSI, so it disappears into a glove box or a bike bag. It takes a 195/65R15 from 30 to 36 PSI in about a minute and a half, which is plenty for routine top-offs.

It's the one you'll actually carry. Under a pound and roughly the size of a large coffee mug, the L7 fits in a glove box, a backpack or a bike bag without you planning around it. Every other inflator here demands real trunk space. This one just rides along, and that's most of the battle with emergency gear.

The gauge punches above the hardware. AstroAI's TrueGauge sensor samples pressure 200 times a second, and the dual display shows your target and your current pressure together. So you watch the number climb instead of pulling the chuck off every ten seconds to check with a separate gauge.

From our review of 9 portable tire inflators, by Genevieve Dubois, Home & Living Expert

What we like

• +It's the one you'll actually carry
• +The gauge punches above the hardware
• +The presets cover more than car tires
• +A charge lasts longer than an emergency does

What to know

• –Skip it if you drive a truck
• –The motor gets hot and the battery is sealed