I've only had this for a day now, and I've used the 12 volt DC out using the cigarette lighter style 12 volt output to run an air compressor, and connected it to my fifth wheel where I pulled it's battery for winter, and it has enough power to run the fifth wheel jacks

Works greatUnbelievable power for such a small unit

Seriously impressive portable power unit by the specs and other reviews

This thing is much bigger and heavier than the smaller harbor freight version, but that stands to reason with much more available power, so not unhappy with the extra size.

Takes almost a day to charge, and didn't have enough power to start F-250

Compact, Impressive Starting Power, Nice Features

It did not do what they said it would do not enough battery power to just a regular car

The batteries were completely dead, not even enough power to drop the steps

That’s extremely impressive, having enough power to start a Diesel 14 times with charge left over

Hook it up hit power and truck started like it had full power.. awesome.

No hesitation just worksMakes as a great power

Incredible starting power!

Worked great as an emergency power source

After attempting to start the H1, there was not enough power to crank it over prior to using the GB150.

The batteries were completely dead, not even enough power to drop the steps

GREAT POWER AND

Incredible power in a compact form

Great power To jump a battery that is dead.

Great to power home electronic projects when not starting cars.

Convenient power source when needed

The power this jumpstart has was incredible

but I always had to use booster cables (the battery pack could only help reducing the time it take to actually getting enough cranking power to wake the engine to life)

I then had to use it on my trailer motor and again, it provided enough power to jumpstart the motor

So I got a ride home and brought it back the next day, 2nd time it gave enough power to turn the starter, but very slow

I bought the GB150 because I wanted the most power I could get for times when I needed any extra power available

Loses power quickly

amazing power for its size

It had enough power to turn the lights

It is a little expensive, but a "reliable & powerful" jump starter and extra power source for my laptop.

IF IT WON’T POWER-UP

These loose power or reserve power much faster

Great power

They need to boost power by at least 20% for me to consider purchasing another.

It's rated to have enough power to jump start up to a 10L engine, but due to the large heavy size, it would benefit from a carry handle.

It's a mighty power house for its size

Lots of power great camping power supply also

I purchased it because it's supposed to have enough power to jump start a large diesel engine.

Tells you every thing you need to know about the battery your charging, and has amazing power