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

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’ve used the NOCO Boost GB20 twice now, and both times it saved me from what could’ve been costly and time-consuming situations. Instead of calling a tow truck or waiting around for someone with jumper cables, I was back on the road in minutes. It's incredibly easy to use—even if you're not mechanically inclined—and it holds a charge for a surprisingly long time. I charged it once and it sat in my car for weeks before I even needed it, and it still worked perfectly. Recharging it is quick and hassle-free.This jump starter has already saved me money and time, and it’s given me peace of mind knowing I have a reliable backup in my glove box. If you drive a gas vehicle (up to 4.0L), I highly recommend this. It’s compact, powerful, and an absolute must-have!

was recommended by a friend and am super happy with this purchase. in the last 20 months, it has been a champ in helping start two riding mowers and a small truck. compact, easy to use, and very reliable for a great price. i've recommended it to another friend who also raves about it.

Must have. This small charger jumps off pretty much any thing with a battery. I’ve used it to jump start my Ford F150 with ease. It’s small and stores easily just about anywhere and is easy to charge. Comes with a LED light built into the charger. I recommend this product. Why did you pick this product vs others?:Other recommendations and I have owned one before.

Why did you pick this product vs others?:I jumped my car with this, then used my car to recharge it. 10 seconds to jump, <10 minutes to recharge. My battery want completely dead, but close (the doors wouldn't unlock with the fob, dash lights were very dim). Excellent lightweight product!

The product does work and works good. No issues jump starting a CAN AM Spyder F3 LTD. Very easy to use. The only reason giving it 4 starts vice 5 starts is that the unit's battery does not retain its charge. You almost need to charge the unit weekly or at least check the status. I left the unit unattended for two weeks (no use, no need) but it was almost drained. Compare that with my portable air compressor that retains its charge for weeks on end. If you can remember to check the battery status at least weekly, then it's a good buy. You just don't want to be caught off guard needing it either for yourself or another person in need, and the unit is dead because it's been a week since you last charged it.

So handy. It's works like a dream. Built with the best quality. I highly recommend this for everyone with a vehicle. It has gotten me out of a few tight spots where no one had jumper cables around. It also came in handy for helping others in need of a quick jump.

Love, Love and Love some more. Works perfectly and got me out of a couple of jams and helped neighbors with it.