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NOCO GB40 Jump Starter User Reviews
NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines
Key Insight
The override feature is crucial for completely dead batteries but isn''t clearly explained in documentation - many users nearly returned working units before discovering this hidden capability.
What Real Users Say
Based on 20 Reddit discussions + 124,723 Amazon reviewsReal owners consistently highlight this unit''s remarkable ability to hold charge for over a year without maintenance and its reliable performance in extreme cold conditions. Users successfully jump-started everything from small cars to large diesel engines, though some needed to use the override feature for completely dead batteries.
👍 What Users Love
- ✓Exceptional charge retention lasting 12-18 months without recharging
- ✓Works reliably in extreme cold temperatures down to -15°F
- ✓Can jump multiple vehicles consecutively on single charge
- ✓Compact size eliminates need for traditional jumper cables
- ✓Functions as backup power bank for camping and emergencies
- ✓Durable construction withstands trunk storage abuse
👎 Common Complaints
- ✗Cables are notably short for some vehicle configurations
- ✗No wall charger included in package
- ✗Instruction manual has extremely small text
- ✗Override feature not well documented for completely dead batteries
- ✗May struggle with stone-cold dead batteries without override mode
Key Features
- •Maintains power for over a year without needing recharge cycles
- •Compact lithium design fits easily in trunk or glove compartment
- •Built-in safety systems prevent reverse polarity and overcharging
- •Dual-purpose device works as phone charger and emergency flashlight
- •Heavy-duty clamps designed for tight engine bay spaces
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