Boost GB20: 500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 4.0L Gas Engines

I've had this for a couple years. Worked well on my car and also on my riding lawn mower. Works so well I got my sister one and she loved it. She found it easy to use and it saved her a few times.

Amazing power for such a small product. It will jump-start most batteries unless they are totally dead. Charge lasts for quite a long time so it's always ready to use.

Works really well! Light weight. Easy to use. I love the storage bag it comes with. I’ll be getting another one for our other car & one for my mom just in case! 10/10

I have a Honda Fit. I hooked this to my battery and it started right up. What it didn’t tell me and I didn’t know but I found out from reading is once your car starts, you need to drive it around for 20 to 30 minutes to get the battery and the alternator charged up. I just want to say this was well worth the $79 I paid. I will keep this charged and keep it in my car just in case I ever need another charge. I would recommend this to anyone. If you are taking a trip at night, or even during the day, have it charged in your car. Can also charge your cell phone with it.

Purchased in 2021 and still going strong. Bought a higher version in 2025 for a family member. Pros: Holds a charge for a long time, has been used on several occasions, and doesn't require immediate recharging. The included clamps are compact and rugged. It starts engines far bigger than recommended, though slowly (powerful enough for small engines). The safety features and ease of use are appreciated. Cons: The charging speed for phones is slow. The included bag is flimsy. I'm a proud owner for years, I bought the next model up to start larger engines. I've helped other drivers with off-brand jump starters that are bulkier on several occasions. This relatively compact model has surprised me firing up diesel engines larger than it's rated. A must-have for every driver, and cheap enough to justify.

I have only had to use this once, thank goodness. I think it is a wonderful tool, and MUCH better than the giant things they sell at Harbor Freight, Walmart, and Lowe’s. Those really don't hold a charge. However, I wish it held a little better. That's all. I think this is at or near the top of its product category.

This will start your car when you can’t get someone to help you use jumper cables. I’ve used it twice in the month I’ve had it because my vehicle has a battery drain problem.

I live alone on a lake in the middle of nowhere. Came out there day to a dead battery and ordered this guy! The NOCO Boost GB20 has been one of the most useful automotive gadgets I’ve added to my car kit. This little jump starter packs a surprising punch — it easily starts my 12V vehicles with engines up to 4.0L gas without hesitation. What I love most is how compact and portable it is; it fits in a glove box or backpack, so it’s always ready without taking up much space. Setup is super simple: just connect the clamps, and the LED indicator lets you know you’re good to go. The UltraSafe technology gives extra peace of mind because it’s spark‑proof and reverse‑polarity protected, so even if you clip the clamps wrong (we’ve all been there), it won’t hurt the battery or device. Beyond jump starting, the built‑in USB port doubles as a power bank for phones and gadgets — perfect for emergency charging on the go. Battery life stays strong between uses, and the GB20 recharges quickly so it’s ready when you need it. If you want a dependable, easy‑to‑use jump starter that’s more powerful and safer than a traditional roadside pack, this one is absolutely worth it! Absolutely a great value and gets your car going quickly!

High quality product!

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Uratował mnie już 4 razy. Polecam

sehr gut bedienbar und sehr nützlich

Prix correct fonctionne très bien