









🚀 Power up your ride & your life—never get stranded again!
The GREEN KEEPER GK-J1204 Portable Car Battery Jump Starter delivers a robust 3000A peak current to jump-start gas and diesel engines up to 8.0L. Beyond jump-starting, it doubles as a PD65W fast-charging power bank and features a multi-mode emergency LED light. Designed with 10 built-in safety protections and an ergonomic compact form, it’s the ultimate all-in-one roadside essential for professionals who demand reliability and versatility on the go.













| ASIN | B0CZVB94CM |
| Amperage | 3000 Amps |
| Automotive Fit Type | Universal Fit |
| Battery Capacity | 20000 Amp Hours |
| Battery capacity | 20000 Amp Hours |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | 62,875 in Automotive ( See Top 100 in Automotive ) 229 in Car Battery Jump Starters |
| Brand | GREEN KEEPER |
| Brand Name | GREEN KEEPER |
| Compatible with Vehicle Type | Several types of vehicles |
| Customer Reviews | 4.2 out of 5 stars 329 Reviews |
| Included Components | Carrying Case, GK-J1204 Jump Starter, Jumper Cables, USB Charging Cable, User Manual |
| Item Dimensions D x W x H | 21.1D x 15.2W x 8.1H centimetres |
| Item Weight | 0.83 Kilograms |
| Manufacturer | Dong guan Carosstech Co.,Ltd |
| Manufacturer Part Number | GK-J1204 |
| Manufacturer Warranty Description | 18 Months Warranty |
| Model Number | GK-J1204 |
| Peak Output Current | 3000 Amps |
| Product dimensions | 21.1D x 15.2W x 8.1H centimetres |
| Specification Met | CE, FCC, UL |
| Vehicle service type | Several types of vehicles |
| Voltage | 12 Volts |
| battery-cell-composition | Lithium Ion |
I**.
Worth Every Penny
I recently got my hands on the Portable Car Battery Jump Starter, and wow, what a lifesaver! This little powerhouse packs a serious punch with 3000A, making it suitable for car engines up to 8.0L, whether gas or diesel. If you’ve ever found yourself stranded with a dead battery, you know how stressful that can be. This jump starter is like having a trusty friend in your trunk, ready to help you out in a pinch. One of the standout features is its ultrasafe design. The jumper clamps are super easy to use, and I felt confident connecting them, knowing that the built-in safety features would prevent any mishaps. There’s nothing worse than trying to jump a car and worrying about sparks flying everywhere! And let’s talk about the LED lights. They’re a game changer, especially during those late-night emergencies. I can’t tell you how comforting it is to have a bright light when you’re working on your car in the dark. It really adds to the peace of mind that comes with this jump starter. But wait, there’s more! It also doubles as a power bank, and if you’re like me, you’re always on the lookout for a quick charge for your devices. The PD65W quick charge capability means I can power up my phone and other gadgets in no time, which is a huge bonus. Overall, I can confidently say that this Portable Car Battery Jump Starter is worth every penny. It’s compact, user-friendly, and truly a must-have for anyone who spends time on the road. Whether you’re commuting, road-tripping, or just running errands, you’ll be glad to have it by your side. Trust me, it’s a purchase you won’t regret!
M**M
Still decent after a few months of use.
haven't been able to fault it so far. I've had this charger many months and used it a few times. it holds a good charge, you can get at least 3 jumps before needing to recharge it. so it functions well. it is very sturdy and it has a very good case containing all the leads you need and a 12v plug.
R**M
Wonderful
Would be list without it
M**9
Does the job
Perfect item, does what it is needed for but went from 100% charge to 64% on one jump start.
A**N
Did not work. Utterly incapable of jump starting a car.
Absolute rubbish. At First I thought that this was a great device - it charged well, it has a lot of functionality (flashlight and USB charging as well as a 12v car socket that you can plug into the jump pack). I fully charged it when I got it and took it out of my car once to top it up after a few months. Recently I had need to actually use it to jump start a car and immediately on plugging it in, the power level started dropping by about 2-3% per second (bear in mind I wasn't even trying to start the car at this point). By the time the key was turned (about 20 seconds after attaching it) the pack was showing about 20%, and this immediately dropped to 0. It didn't even turn the engine once before failing.
D**K
Mr Brook Somerset
Fantastic great unit just the job
T**L
A robust compact booster pack
I’ve not needed to use this booster pack yet, but it’s fully charged & ready, it looks a solid robust unit , lets hope it works as well as it looks when needed.
B**L
Insurance
Seems neat, very well made and suitable for the purpose. I haven't tried it yet (hopefully I never will!) but it is valuable insurance against the possibility.
D**.
Starthilfe Powerbank 3000 A (Greenkeeper)
Kompakteinheit funktioniert wie in der Werbung und Demovideo dargestellt. Bin sehr zufrieden, mein SUV 2 l Diesel startete nach 7 Wochen stehen auf Anhieb. Allerdings muss man um an der Steckdose laden zu können ein Ladestecker kaufen. (nicht im Lieferumfang) ca. EUR 30,00 Ansonsten Verpackung, Aufbewahrungstasche und Zubehör einwandfrei, kann ich nur weiterempfehlen.
A**R
car charger
we love this it has helped us to start a car a couple of times when lights were left on inside
M**N
Prima!
Prima. Werkt perfect en snel
M**2
Muy util
A nosotrosnos ha resultado muy util y sin fallos.
K**R
It didnt work!
It did not jump start my car at all, I followed all the instructions and nothing happened, definitely not worth it, you get what you pay for
Trustpilot
1 month ago
1 month ago