GREPRO 5-in-1 Jump Starter Power Pack with 150PSI Air Compressor (Up to 10.0L Gas,8.0L Diesel), Car Jump Starter for 12V Vehicle, 3000A Jump Pack with Digital Display, LED Flashlight

I recently purchased the GREPRO Jump Starter Power Pack and couldn’t be happier with my decision. This device is a true lifesaver—compact yet incredibly powerful, it has jump-started my car quickly and efficiently on more than one occasion. The build quality is top-notch, and it’s clear that a lot of thought went into ensuring safety and ease of use.I also appreciate the extra functionality; the built-in USB ports mean I can charge my phone and other devices on the go, which is incredibly handy during emergencies or while traveling. Its sleek design makes it easy to store in my trunk, and it’s become an essential part of my car’s emergency kit.Overall, the GREPRO Jump Starter Power Pack exceeds my expectations in every way. It’s reliable, versatile, and a true peace-of-mind investment for anyone looking for a high-performance jump starter. Highly recommended!

I bought this as a jump starter and phone charger to keep in my '72 MGB. Most of the reviews cover the jump start capability which I haven't yet had to test. Though I did test the battery connectors, instructions were easy to follow and the 'reverse connection warning system' was clear and very effective. Not many reviews cover the other functionality of the product so I put it through its paces over the weekend. Here are my observations:1. Initial charge: The device came charged to 100% so ready straight out of the box. The charge percentage is a digital number reading which was much more useful that just 3-4 indicator lights on some products.2. Torch: Easy to turn on and switch between the three modes. Its not super bright (I don't know the exact lumens) but would be sufficient to light up a small area to do any emergency works. I wouldn't rely on it for any distance illumination. The strobe and SOS functions would be god for roadside warnings, though I prefer to use red flashing light (on my other torch) for these.3. Device charger: With two USB chargers this will be very handy when using my phone for navigation and music. It took 2 hours to charge my iPhone 11 from 23% - 94% and used 40% of the jump starters battery capacity. So I would estimate its good for 2-3 full charges but bear in mind, it says you need min 60% charge to be able to do a jump start.4. Case and accessories: It comes with all you need inside the handy and robust pouch. If I was going to get picky I would say the pouch is slightly oversized but that does give room for apple and micro USB charging cables.5. Device recharging: I haven't yet fully drained the device battery but after doing the above tests it took 1.5 hours to recharge the device from 60% - 100% via a wall plug.Overall, I'd highly recommend this device for keeping in the car to jump start when needed as well as an emergency recharger for various devices.

No - I didn't believe it either - until someone lent me one to start my car! Not much bigger or heavier than a mobile phone AND generates enough amps to whiz the engine over quickly for a 1st. time start.My background is scientific but I'm going to need to google this as to how it works. Impossible Magigc you would have thought)AND great £ value.

The jump pack does its job but the only issue i have with it is to be able to jump my lexus ct200h I need to always press the boost button and then you can jump the car but when it's on boost the charge drains quite quickly. The storage capacity seemed a lot when I bought it but it doesn't feel like it realistically you can get about 2 or 3 jumps before the charge goes below 50% but the best thing I'd say is it charges quickly i borrowed my friends jump pack you had to charge that for hours this on the other hand left it on charge in the car went on a 45min drive fully charged. The weight and build quality is also good so you dont really have to worry about it tumbling around in the boot.

Tested this on a totally flat BMW 325 battery and it started easily on boost. Very easy to use compared to the old lead-acid monster it is replacing.

This is a well made compact little product and it actually works. We have 4 older vehicles which are not in use everyday and the product is in weekly use. It starts a car every time. I reckon I get 6 starts of a completely flat baterry from one full charge of the device.

Brilliant, battery was flat after returning from hols as it was freezing here. This came with 70% charge, it did say charge to full before use but managed to start the car first time. Connect it up, match what the lights mean to instructions and then press the boost button. It can charge other USB devices too, a bit heavy to carry around for everyday use but perfect to leave in car as an emergency

Amazing little gadget, that saved me bothering anyone, It started my t4comper. It is idiot proof. It's amazing.