NOCO GB251
Boost Max 3000A 24‑Volt Ultra Safe™ Portable Lithium Jump Starter Box
The NOCO GB251 Boost Max is designed as a professional-grade 24‑volt lithium jump starter for the toughest jobs. With massive power—3,000 peak amps—it effortlessly jump-starts 24V gas and diesel engines up to 32 L, including Class 8 trucks buses, RVs, and heavy equipment.
Features
Concealed inside a surprisingly compact, 14‑lb body with a carry case, it’s optimized for fleet managers, mechanics, and emergency responders who cannot compromise on performance.Featuring NOCO’s UltraSafe 2.0 spark‑proof and reverse‑polarity protection, the GB251 ensures mistake-free jump starting in challenging conditions
Advanced Options
A built-in voltmeter doubles as a 60‑second timer: start the engine within a minute or the unit shuts down to save power—hitting pause resets it for another attempt . Additional USB ports and a 600‑lumen LED make it a versatile emergency power bank and lighting tool.
Product Key Features
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Delivers 3,000 Amps peak for jump-starting 24 V batteries on large gas/diesel engines up to 32 L
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137 Wh lithium-ion battery also powers USB devices (2× 5 V 2.1 A)
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600‑lumen LED flashlight with 7 modes (high, medium, low, SOS, strobe, etc.)
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UltraSafe™ 2.0 protections: spark-proof, reverse‑polarity detection
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60‑second auto-shutdown timer with integrated voltmeter ensures safe, power-efficient use
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Rugged IP65-rated housing, natural cooling, operates from −4 °F to 122 °F
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Reliability & Performance
Designed for demanding field use, the GB251 sports an IP65-rated enclosure with natural cooling to withstand dust, moisture, and tough operating environments It recharges in ~8.5 hours using the included 56 W AC XGC4 adapter or via a vehicle’s 12 V outlet, ensuring it’s always ready for fleet work or on‑site emergencies.
Key Features (Bullet List)
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3,000 A peak current
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24 V 137 Wh lithium-ion battery
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Dual 5 V 2.1 A USB outputs
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600‑lumen 7‑mode LED flashlight
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Spark-proof clamps, reverse polarity detection
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Integrated voltmeter & 60‑s auto-shutdown
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AC (56 W) + vehicle 12 V XGC recharge
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Natural convection, rugged IP65 housing
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