Back to Amazon.com
customer reviews
15,689
4.6 out of 5 stars

NOCO Boost XL GB50 Jump Starter Box

$119.95
$189.95 37% off Reference Price
Condition: New
Sold out Back to product details

Top positive review
80 people found this helpful
Solid unit. Zero issues & worth having handy.
By Maxwell on Reviewed in the United States on November 12, 2022
TLDR; Worth the buy. Worked exactly as needed. Good tool to have on hand. "Better to have it and not need it, than need it and not have it." I had neglected to start up an 06 Infiniti sitting in the heat for a couple of weeks when the battery was already going bad. Don't judge! I bought a new car. So, since I always intended to own a portable jumper for times like this, having no cables & instead of bothering anyone with a jump, I pulled the trigger and bought one of these units. (12V 1500A) Getting to the point. Worth the buy. No problems upon use. I of course had to charge it completely which took somewhere between 4-6 hours. Upon hooking up to the battery ***it did take a minute or two for the car battery to "receive" the charge,*** but once it did, the unit started making a clicking sound, the power LED Indicators on the unit started cycling (which to me suggested the unit was officially feeding the car battery) - went to turn the key in the ignition and voila, car started up without skipping a beat. Remember folks, if a power cell has zero charge, it's not going to instantly come back to life when you hook it up to a jumper or other battery! Give it a couple of minutes at most, but any longer, it would be safe to assume the battery is totally dead especially if the unit is non-responsive when you hook it up. The unit itself is nice and compact. The box packaging is sturdy enough for you to regularly pack it back inside its box - if you're that sort of person, I am - but it does include a surprisingly NICE quality/material storage bag. The Jumper Cables are a tad short, but understandably for the purpose of being compact. I myself had no issues reaching my battery with them, but could pose an issue to those with a hard to reach battery. The dual LED illumination lights definitely supply you with some decent light, and would certainly be visible at night on the road or get you around your house in a power outage, but I would not recommend it be used as a primary light source. It also includes a USB port for you to connect a charger for your devices. I understand others have later reported that their unit died on them. I'll cross that bridge when I get there. Though, I would imagine as long as I don't keep it sitting on a charger, don't use it unnecessarily, and only recharge it if it actually becomes depleted - it should last. I recommend this product. 👌 Thank you for reading!
Top critical review
2 people found this helpful
Great for 3 years
By CometWatcher on Reviewed in the United States on July 20, 2025
This is a great portable charger, but its shelf life is about 3 years. I loved mine, but it no longer will take a charge. I’m going with a cheaper option from this point on with the expectation that they all probably will work the isolated times you need them but they also all will only last a couple of years or so. (My previous, larger charger from a different brand also lasted about 3 years.)

Sort by:
Filter by:
By -
Verified Amazon Purchase
Vine Customer Review of Free Product
Sorry, no reviews match your current selections.
Try clearing or changing some filters.Show all reviews
Show more reviews


people found this helpful
By -
Verified Amazon Purchase
Vine Customer Review of Free Product