NOCO Boost X GBX155 4250A Portable Jump Starter
Jump-Start Any Vehicle Yourself. No Second Car Needed.
A 4250-amp portable jump starter with spark-proof, reverse-safe clamps — compact enough for your glovebox, powerful enough for a truck, SUV, or diesel engine.
- ✓ 4250A for trucks and SUVs
- ✓ Spark-proof, reverse-safe clamps
- ✓ Compact enough for your glovebox, powerful enough to rescue any road trip or job site emergency
A dead battery costs you the meeting, the flight, the pickup
Your battery dies at the worst moment. You wave down strangers, hope someone has cables, wait 45 minutes for a tow truck. Every dead battery costs time, money, and the feeling that you had no way to fix it yourself.
Peak Power: 4250 Amps
Delivers 4250 peak amps of lithium starting power — enough to jump gas engines up to 10.0L and diesel engines up to 8.0L. Covers trucks, SUVs, vans, boats, and RVs.
Built-In Safety System
Spark-proof technology means the clamps won't arc when you connect them, and reverse-polarity protection blocks current if you attach red to black by mistake.
USB-C 60W Port
Charges devices between jumps, and a 500-lumen flashlight with 6 modes covers emergency lighting and roadside visibility.
Jump-Starting Should Take Under a Minute
Connect Clamps
Attach the heavy-duty clamps to your battery. LED indicators confirm a safe connection.
Press to Boost
One button delivers up to 4250 amps. Spark-proof tech protects you if clamps touch incorrectly.
Start and Go
Turn your key, engine starts. Disconnect, stow in the bag, and get back on the road.
Real Results
"Bought it after getting stranded twice last winter, should've done this years ago."
"Didn't expect the flashlight to be this bright, used it to check my engine at night."
"If you've got a truck that sits for weeks at a time, get one of these. Saved me twice already."
Common Questions
Is it safe?
Yes. Spark-proof technology means the clamps won't arc when you connect them. Reverse-polarity protection detects if you accidentally attach red to black and blocks current flow. Status LEDs confirm proper connection before power flows.
Will it start my vehicle?
The GBX155 delivers 4250 peak amps, enough to jump gasoline engines up to 10.0 liters and diesel engines up to 8.0 liters — covering most cars, trucks, SUVs, vans, motorcycles, boats, RVs, and ATVs.
What's included?
Heavy-duty clamps, a USB-C cable, a 12V-to-USB-C cable, a carry bag, and a guide. Peak amps: 4250A. Engine support: gas up to 10.0L, diesel up to 8.0L. USB-C: 60W in/out. Flashlight: 500 lumens, 6 modes.
What if it doesn't work for me?
100-day risk-free returns or exchange, with no return fees required.
Try it risk-free for 100 days
If the NOCO Boost X doesn't get you started, contact us for a full refund or exchange — no return fees required. We stand behind every unit because we know how it performs.
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