Sealey Roadstart RS132

This is one of the cheapest units on test, but it doesn’t compromise on features, with a battery isolator and wrong connection warnings.

It was one of the midfield performers in the engine test, although it did the job.

You also get a compressor, albeit with a rather short hose. A light and switched 12V socket complete the package.

At around 6kg it’s ideal for power away from the car.