Boost 4250A UltraSafe Lithium Jump Starter

NOCO GBX155 Boost X – 4250A 12V UltraSafe Lithium Jump Starter

The NOCO GBX155 Boost X is part of NOCO’s all-new Extreme Series — engineered with next-level starting power and cutting-edge technology to deliver confidence in any situation. Rated at 4,250 amps, this portable jump starter provides maximum energy output for powerful engine starts every time.

Key Features

• Extreme Starting Power – Delivers 4,250 amps to jump start gas engines up to 10.0L and diesel engines up to 8.0L.
• Fast USB-C Charging – Fully recharge in just 2.7 hours, or go from 0% to ready-to-start in as little as 5 minutes.
• Built-In 60W Power Bank – Charge laptops, tablets, smartphones, wearables, and other USB-C devices with fast Power Delivery in & out.
• UltraSafe® 2.0 Technology – Enhanced spark-proof design and reverse polarity protection, now with improved thermal efficiency and power management for longer life and stronger performance.
• Versatile & Rugged – Designed for all vehicle types.

Why Choose the GBX155?

This isn’t just an upgrade — it’s a whole new level of power and reliability. The GBX155 combines extreme jump starting capability with modern USB-C charging convenience, making it one of the most versatile lithium jump starters ever built. Whether you’re driving, boating, camping, or working in the field, the Boost X Extreme Series ensures you’ll never be left without power.