NOCO GBX155 Boost X — 4,250A 12V Extreme Series Lithium Jump Starter

NOCO GBX155 Boost X — 4,250A 12V Extreme Series Lithium Jump Starter

The NOCO GBX155 Boost X is part of NOCO’s Extreme Series — not an upgrade to the original lineup, but a ground-up redesign built for maximum power and speed. At 4,250 amps, it handles gas engines up to 10 litres and diesel up to 8 litres, and recharges from flat to jump-ready in just 5 minutes via USB-C. This is the jump starter for drivers who refuse to compromise.

Key Features

• 4,250A peak starting current — gas engines up to 10L and diesel up to 8L; cars, trucks, SUVs, ATVs, boats, RVs, tractors, and more
• Ultra-fast USB-C recharge — fully charges in 2.7 hours; just 5 minutes of charge delivers enough power to jump start
• 60W USB-C Power Delivery — charges phones, tablets, laptops, and wearables both in and out
• Enhanced UltraSafe technology — spark-proof, reverse polarity protected, with improved thermal efficiency and power management
• Extreme Series platform — completely new architecture engineered for maximum energy release at every start

Specifications

• Peak Current: 4,250A
• Compatible Engines: Gas up to 10L, Diesel up to 8L
• Recharge Time: 2.7 hours (full); 5 minutes (jump-ready)
• USB-C Power Delivery: 60W in/out
• Warranty: 1-Year Limited

Ideal For

• Trucks, SUVs, and large diesel vehicles requiring serious starting power
• Drivers who need the fastest-recharging jump starter available
• Anyone upgrading from an older GB-series to the latest Extreme Series technology

Ships from Thunder Battery — Canada's trusted battery and energy storage dealer.