NOCO Boost X GBX155: 4250A UltraSafe Jump Starter for 10.0L Gas & 8.0L Diesel

Meet NOCO Boost X GBX155, a portable lithium jump starter designed to remove the guesswork from roadside starts. With a peak of 4,250 amps, it powers gas engines up to 10.0 liters and diesel engines up to 8.0 liters, delivering a confident kick-start when you need it most. This isn’t just raw power—it combines advanced safety, smart energy management, and versatile charging in a compact, rugged package you can trust on the road, at the campsite, or off-grid.

Power that travels with you

• 4,250 amps for strong starts on large engines
• Gas engines up to 10.0 liters; diesel engines up to 8.0 liters
• UltraSafe 2.0 with spark-proof connections and reverse polarity protection
• Enhanced thermal efficiency and power management for safer operation and longer life

Smart energy, fast recovery

• Turbo recharging via USB-C Power Delivery in about 2.7 hours
• From a completely depleted battery, a jump start can be ready in as little as 5 minutes
• 60‑second timer conserves energy while delivering maximum power when you need it
• Integrated high-voltage design that supports up to 18 jumps per charge

Power on the go

The 60-watt USB-C Power Delivery port lets you charge phones, tablets, laptops, and more. Dual‑direction charging turns Boost X into a capable portable power bank, keeping your devices powered when you’re away from wall outlets.

Light, tools, and ready-to-go

A precision 500-lumen LED flashlight in 7 modes (including SOS and strobe) illuminates repairs, roadside work, or camp tasks in low light.

What’s in the box

• GBX155 jump starter
• Heavy-duty jumper clamps
• USB-C charging cable
• microfiber storage bag

Durable, dependable engineering

Engineered in the USA and backed by a 1-year limited warranty, GBX155 is designed for reliability in challenging environments. Whether it’s a glovebox staple for everyday drivers or a backup power companion for adventures, this jump starter blends trust with performance.

Designed to be a versatile tool—a car jump starter, a portable power pack, and a compact jump box—GBX155 offers possibilities without overpromising results. It’s crafted to meet demanding needs with real-world usefulness, letting you plan ahead with confidence.