GOOLOO GP4000 4000A Peak Jump Starter for All Gas & 10L Diesel

I bought the yellow jump starter three and a half years ago, and the reason I’m only writing my review now is that I wanted to see how well it performed over time. First of all, the quality is excellent, and in terms of performance, it really does work brilliantly. I bought this jump starter because my previous one had stopped working, mainly because I had not recharged it for about four months. However, with this one, even after I forgot to recharge it for almost a year, not only did it still work perfectly, but the battery level had not even dropped by one bar. It can also be used as a very powerful power bank, and the built-in torch gives off a very good and acceptable amount of light. Overall, I’m very pleased with it and would definitely recommend it.

Brilliant bit of kit. Comes in a really neat and tidy case easy to take around. Used a lot so far and not had any trouble no sparking when connecting and really easy to use. Incredible power for such a small device, has started tractors over and over before needing re charging. Definitely easier than jump leads would be lost without one now.

Writing a review after using this for over a year and recommending to someone else. Used frequently over the past year to jump start my Audi 3.2 petrol and always jumps it first time even on a completely dead battery. Case is great for keeping all the stuff together. Does take a while to charge but understandable for the size but does output enough power to charge devices like laptops etc albeit not as a super fast charger but good in a pinch.

Can definitely start a small engine. I have 1.8l petrol engine, and it started without battery being connected, this is about as bad situation as it will encounter. Four starts, because first one came in faulty and wasn't charging at all.

Amazing piece of kit, used many times so far to start plant on cold mornings. started the telehander no probs. Charged when bought and still on full power 1 month later. Found it on an Autotrader review site. Highly recommended, good carry case and lightweight and a decent price.

This is the best product I have ever come across will boost a dead battery on anything easy to use has a light which activates when you push the button has two usb ports to charge your phone or give power to very strong does what it says on the boxwotlrth every penny comes with a case so you can store it for protection and also when connected will indicate if you have connected it the wrong way if all light are green press button and you have all the power you need compact and easy to carry

Bought and received item the same day - amazing! Was able to jump start my LWB Peugeot Boxer van using the boost option and worked first time. Delighted! Would highly recommend.

Bought this originally for my 2005 transit van with 2.4 litre diesel engine. Started that absolutely no trouble. I've since used this on other vans and most recently, my little petrol car and it starts first time without fail. Easy to recharge with the supplied USB-C cable - full charge takes several hours but it holds charge well and lasts longer than I've needed it to before recharging again. Comes in a handy protective case to hold it when not in use, and store in your tool shed or back of the car/van. If you're looking for a reliable means to jump start your vehicle, including large diesel engines, this is the one and I fully recommend it.