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XIAOMI Portable Electric Air Compressor 2 review

A compact compressor with a 19 mm (0.75 in) die-cast cylinder supporting up to 150 psi, a magnetic motor the maker states is 25% faster, and up to ten tires per charge.

Our conclusion Plenty of pressure headroom and a real capacity figure. A good household choice; the Oasser is the better documented one for bikes specifically.

Photo : Himiway Bikes, Unsplash

Xiaomi’s second-generation compressor is the mainstream consumer choice in this category.

What the manufacturer publishes

A powerful magnetic motor increasing inflation speed by a stated 25%. Improved hardware for higher energy efficiency, giving up to ten tires on a full charge. A high-precision 19 mm (0.75 in) die-cast cylinder block supporting up to 150 psi. A preset pressure value with automatic stop when full, and real-time display of tire pressure.

The 19 mm (0.75 in) cylinder

A narrower cylinder generates higher pressure with less motor effort, and moves less air per stroke. That is the right trade for car and road bike tires, and the wrong one for a 2.5 inch mountain bike tire — where you want volume rather than pressure and the wait is noticeably longer.

150 psi in context

Around 10.3 bar, and no bicycle tire needs it. What it means practically is that a road tire at 100 psi is well within the unit’s range rather than at its ceiling, which is where compressors slow down and get hot.

The real comparison

Against the Oasser on this shelf: similar capability, similar price, and the Oasser publishes speed, noise, dimensions and a 0.2 bar minimum where this publishes pressure and capacity. If you want the fullest picture before buying, that one gives it.

What we rate and what we flag

Strengths

  • A published 150 psi maximum, which covers every bicycle pressure with room to spare
  • Up to ten tires per charge, matching the best figure on this shelf

Compromises

  • A general-purpose compressor rather than a bicycle-specific tool
  • No weight published on this listing
  • A 19 mm (0.75 in) cylinder is optimized for pressure rather than volume, so wide tires are slower

Specifications

Maximum pressure150 psi
Cylinder19 mm (0.75 in) high-precision die-cast
Per chargeup to 10 tires
Speed25% faster stated, magnetic motor
EAN6941812720974

The questions riders ask

Is 150 psi useful on a bike?

It is more than any bicycle tire needs — road tires run around 90 to 115 psi at most. What the figure tells you is that road pressures are well inside the unit's comfortable range rather than at its limit.

How many tires per charge?

Xiaomi states up to ten on a full charge, with improved hardware for higher energy efficiency.

Our score

8.1/ 10

Plenty of pressure headroom and a real capacity figure. A good household choice; the Oasser is the better documented one for bikes specifically.

Who buys this one, among bike gear

A household compressor with the pressure headroom for road tires and the capacity for a car.

Cited in this bike gear guides

Sources

Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

How we assess this bike gear

Prices quoted in these summaries are dated readings. The live price is shown next to each product.