GOOLOOGT4000S Jump Starter 4000 Amp Car Starter 100W Two-Way Fast-Charging Portable Car Battery Charger Booster Pack for 10L Diesel and All Gas Engines, SuperSafe Lithium Jump Box for 12V Vehicles

I found out about the Gooloo brand on YouTube (Project farm). At a price that's 1/3 of the NOCO charger he tested, this is a very powerful unit for a much more reasonable price!I'd really give it a 4.5 if I could; knocking it down .5 of a point since Gooloo doesn't include a wall charger. No worries I have a 2 amp wall charger that is more than powerful enough to get the unit to 100%. Very pleased with the first use! It started my car right up. LED display is a great feature. DC output is a nice feature if you need to power other 12 volt tools.Don't buy the $69.00 Gooloo 100 watt wall charger; there are many other 100 watt wall chargers available on Amazon for 1/3 of the price.

Finally used it.It was very easy to use and fired up a ford explorer with a totally dead battery.It was 100% charged and after starting the explorer it shows a 89% charge left.The engine turned over faster than I would have guessed, pretty powerful jumper!

It’s a great product. It works terrific and it’s so small and portable. Don’t let that fool you it’s got the power to start my 6 liter truck when it is completely Dead.

Bought this due to several older cars that wouldn't start in Minnesota winters. This jump starter performed flawlessly multiple times to get our cars started on the coldest mornings. Recommend using a laptop charger with a USB-C connector to rapidly charge this jump starter.

This is a pretty wild device.I've used tiny portable jump starters before, but they were always based upon lead-acid (car battery) designs... so always at least a bit heavy.This thing, on the otherhand, feels like a large plastic (light) brick... that can JUMP YOUR FREAKING CAR (multiple times). I've had a race car battery (Lithium IIRC) before that was similar in its mind-blowing weghtlessness, so it's really cool to see that in a jump starter.Truly insane.Pros:- It works- Nice screen- Holds its charge like crazy- Doesn't even use much juice to jumpCons:- Couldn't resurrect my long-dead battery... but no jump starter could.10/10

This is a quality battery pack. Works well to jump start cars and garden equipment. Note however that it recharges fastest by using the included 12 volt cable plugged into your car while the car is running. It will charge from a USB source but it can take days to charge from a wall plug brick which isn't even included in the package so have to use your own. So just charge it from your cars 12 volt socket while driving because that will top off the battery in 30 minutes or so.

Works great and holds a charge for weeks. Small enough to be handy to travel yet powerful to jump start.

Super handy and strong. Have jumped mini coopers to Dodge Ram 3500. Success every time. My kids have also taken it camping and used it to charge phones.