Gooloo GP4000 Pro REVIEW – Car Jump Starter
A couple of weeks ago I needed a car battery jump starter in the city centre. Because the battery died on the car because I left all the lights on….
Battery was completely dead. It was either a 40 minute wait for roadside assistance or start asking strangers if they had jump leads and if they wouldn’t mind terribly jumping the car. Well it turned out that the insurance company left roadside assistance off the policy this year so it was down to asking random people. Anyway, we found a nice lady with the beefiest jump leads I’d ever seen and a neighbour whose car was close by. All ended well.
Car Battery Insurance
But I didn’t want to be in that situation again, especially if it was on a mountain, so I looked into car jump starters, the battery power banks. First port of call was ProjectFarm an lo and behold he had done a review on car battery jump starters. You can see the video I saw here.
Long story short the Gooloo 4000 was the highest ranked power bank I could actually find. Except what I found was not exactly the GP4000, I could only find the GP4000 *Pro*. This is the one I bought from AliExpress.
And this is why I’m doing this article.
I bought the GP4000 Pro and I’m going to test to see if it’s any good. I’m not going as in depth as Project Farm but I am going to test it starting a car with a completely dead battery and see how it performs vs the car’s normal battery.
I’m also going to test the electric windows to see what difference the Gooloo GP4000 Pro makes to their speed.
That, the intro, lets get into the testing.
Gooloo Car Jump Starter – Unboxing
First impressions are the box is very nice, good quality and something that has had a bit of thought put into it.
Included in the box was a cigarette lighter adapter. You plug one end into the power bank and the other end acts like the cigarette socket lighter in the car.
The main power bank indicating 75% charge.
A USB C cable for charging the jump starter and for charging devices connected to the jump starter.
And the crocodile clip harness which looked great quality. Good cables. Double attached to the clips, good springs and wide opening. First impressions are of a quality product.
Car Battery Jump Start Test
Jump starter was tested with a dead car battery and the normal car battery.
Utterly Dead Battery
So with the car fitted with a completely dead battery, a battery so dead even the LED clocks in the car didn’t come on, the Gooloo GP4000 Pro starts the car with zero issues. Like the car was connected to the best battery in the world. Second start attempt same thing. No degradation in performance. With just the starter connected and the dead battery, engine off, the power windows go up and down as if the engine is running. NOTE: All these tests had to be done with the “Boost” function on the battery jump starter enabled.
Normal Car Battery
With the normal good car battery fitted to the car the Gooloo could be connected without having to use the boost function. And with it connected the car started faster with the Gooloo. To back up this finding, the windows also went up and down faster with the Gooloo connected.
In Short
The GP4000 did exactly as expected. It didn’t feel as if it was breaking sweat starting this 1.6 litres 11:1 compression engine with a totally dead battery. And it’s performance did not reduce after subsequent starts. I’d say it has at least 8 start attempts in it. At least.
Given the quality of the parts and given it’s performance in these limited tests, I’d say the Gooloo GP4000 Pro is a buy. If you want backup should you do something silly and drain your car’s battery. And if you need a powerbank which can charge devices via USB I think it’s a good choice. Perhaps there are cheaper starters out there, but if and when I’m in the same position again, I don’t want to risk having something that perhaps is not as strong as the Gooloo or perhaps doesn’t have the capacity of the Gooloo. When I need a jump starter, it needs to work.
Other Uses
On the subject of charging, I didn’t test it but I see no reason why you couldn’t connect a DC/AC inverter into the device and power mains powered products for a limited time.
