UltraSafe Jump Starter – 3000A 24V Boost MAX
Built for the largest and most challenging 24-volt engine starts. Over 3000 amps of starting power jump starts gasoline and diesel engines up to 32 liters – semi-trucks (up to Class 8), motorhomes, coaches, buses, mining, agricultural, construction and vocational equipment with 6, 8, 12 and 16 cylinders.
Start Within 60 Seconds
Start the vehicle within 60 seconds after pressing the power button. After the 60-second timeout the unit must be powered off and back on to begin a new jump-start sequence; the yellow power LED indicates the sequence has ended.
UltraSafe 2.0 – Spark-Proof
Mistake-free design with spark-proof technology and reverse polarity protection, now with enhanced thermal efficiency and power management for better performance and longer battery life.
USB Charge & Recharge
Two built-in 2.1A USB ports power phones, tablets, cameras and more. With 137 watt-hours of lithium power, the GB251+ can recharge your devices multiple times before it needs recharging.
Rapid Recharge
Recharge up to 4X faster directly from the vehicle's 12-volt auxiliary port or the NOCO XGC4 power adapter.
Integrated Voltmeter
The integrated voltmeter helps pinpoint battery issues and doubles as a 60-second countdown timer that shuts off the GB251+ to preserve internal charge.
High-Lumen LED Flashlight
600-lumen LED flashlight with multiple brightness modes, SOS, and emergency strobe.
Compact & Lightweight
High-discharge lithium technology packs commercial starting power into a 14-pound unit with a protective carrying case.
Specifications
| Peak Starting Current | 3000A |
|---|---|
| Voltage | 24V |
| Battery Types | 24V lead-acid battery systems |
| Gas / Diesel Engine Rating | Up to 32L (safe on all engine sizes) |
| Internal Battery | 137 Wh lithium-ion |
| USB Output | Dual 5V 2.1A max |
| XGC Input | 12V 4A |
| XGC Output | 12V 15A |
| LED Flashlight | 600 lumens |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Charging Temperature | 32°F to 104°F (0°C to 40°C) |
| IP Rating | IP65 (ports closed) |
| Dimensions (H × W × D) | 8.62" × 12.43" × 3.68" |
| Weight | 14.7 lb (6.67 kg) |
| Warranty | 1-Year |
What’s in the Box
- GB251+ Lithium Battery Jump Starter
- 56-Watt XGC power adapter
- 12-Volt 2-foot XGC cable
- Protective carrying case
- User guide & warranty information
