This page compiles the hands-on testing we have already published in the individual reviews. It adds no new measurements: every score, spec and figure below comes from the linked review.

EPAuto

EPAuto 12V DC Portable Air Compressor

4.1 out of 5

A dependable emergency inflator at a price that makes sense for a spare-tire kit. Slow, loud and inaccurate on the dial, but it has survived 60 runs without failing.

Kensun

Kensun AC/DC Portable Air Compressor

4.0 out of 5

A capable dual-power inflator that covers both household and roadside duty. It is slower and less accurate than the Avid Power, but it costs less and the build is honest.

Sub-scores from our reviews

The five dimensions behind every overall score on this site, taken verbatim from each review. A dash means the review does not publish that sub-score.

Sub-scores for EPAuto 12V DC Portable Air Compressor and Kensun AC/DC Portable Air Compressor
DimensionEPAuto 12V DC Portable Air CompressorKensun AC/DC Portable Air Compressor
Inflation speed3.23.8
Gauge accuracy3.13.6
Build quality4.04.1
Portability4.64.2
Value4.84.3
Overall score4.14.0
Typical price$29.99$49.99

Specifications both publish

Published specifications for EPAuto 12V DC Portable Air Compressor and Kensun AC/DC Portable Air Compressor
SpecEPAuto 12V DC Portable Air CompressorKensun AC/DC Portable Air Compressor
Maximum pressure120 PSI150 PSI
Air flow1.0 CFM at 0 PSI1.2 CFM at 0 PSI on AC, 1.1 CFM on DC
Power source12V DC cigarette plug, 10 ft cord120V AC wall power and 12V DC cigarette plug
Hose length3 ft2.5 ft hose with 1 ft extension
Duty cycle10 minutes on, 10 minutes off10 minutes on, 10 minutes off
Weight2.4 lb (1.09 kg)4.1 lb (1.86 kg)
Included adaptersPresta adapter, ball needle, nozzle adapter, carry bagPresta adapter, ball needle, nozzle adapter, carry bag

What you accept with each

EPAuto 12V DC Portable Air Compressor

  • Gauge read 3 to 4 PSI high, the worst accuracy in our test group
  • 4 minutes 10 seconds for a routine 8 PSI top-up
  • Very loud and noticeably buzzy in the hand
  • Short 10 ft cord limits reach on longer vehicles

Kensun AC/DC Portable Air Compressor

  • Analog gauge read up to 3 PSI high, and drifted after four months
  • Slower than the Avid Power in both power modes
  • Housing gets noticeably hot around the cylinder after 6–7 minutes
  • Short AC cord and a stiff hose below freezing

Which one, for whom

Choose the EPAuto 12V DC Portable Air Compressor if you weight portability, value more heavily, and the lower price ($29.99 against $49.99) matters.

Choose the Kensun AC/DC Portable Air Compressor if you weight inflation speed, gauge accuracy, build quality more heavily.

Neither is a bad unit — both cleared the same protocol. Read the two full reviews before deciding: EPAuto 12V DC Portable Air Compressor review and Kensun AC/DC Portable Air Compressor review.