What Is The Noco Boost Plus GB40?
The NOCO Boost Plus GB40 is an ultra-compact lithium jump starter delivering 1000 peak amps to jump-start 12V vehicles (gas/diesel) and charge USB devices. Its safety-first design includes spark-proof clamps, reverse polarity protection, and thermal guards to prevent overloads. Using a LiFePO4 battery, it supports up to 40 jump starts per charge and recharges via USB-C in 2.5 hours. Ideal for cars, boats, and motorcycles, it doubles as a power bank for phones/tablets.
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What defines the NOCO Boost Plus GB40’s core functionality?
The GB40 combines high-current lithium technology with multi-stage safety protocols. At 0.9 lbs, it packs a 12V 1000A burst to revive dead batteries while preventing voltage spikes via Auto-Voltage Detection. Unlike traditional jump starters, it eliminates the need for another vehicle, operating independently for up to 40 uses per charge cycle.
Technically, the GB40 uses a LiFePO4 battery with 24Wh capacity (6,000mAh at 4V) and a proprietary Boost+ algorithm to optimize power delivery. Its microprocessor monitors voltage 100x/sec, cutting output if resistance exceeds 4.5V. Pro Tip: Always pre-charge the GB40 to 75%+ before storage—LiFePO4 cells last longer when kept above 3.2V/cell. For example, reviving a 5.7L V8 truck requires positioning clamps correctly (red to positive terminal first) and activating the “Force Mode” for stubborn starts. But how does it handle extreme cold? The built-in -40°F to 140°F operational range ensures reliability even in frozen conditions.
How does the GB40 ensure safe jump-starting?
NOCO’s Advanced Safety Suite includes reverse polarity alerts, short-circuit prevention, and thermal throttling. If clamps are misconnected, an LED flashes red and power blocks automatically. The spark-resistant design eliminates ignition risks near fuel vapors, critical for marine or motorcycle use.
Internally, a 12-layer protection system covers over-voltage, under-voltage, and over-current scenarios. The clamps use 8AWG cables with 500A fuses, while the housing is IP65-rated against water ingress. Pro Tip: For diesel engines requiring multiple attempts, wait 30 seconds between tries to let the GB40’s cooling system reset. Practically speaking, this device simplifies emergency starts—imagine being stranded in a parking lot with a flooded engine; the GB40’s 20-second activation sequence gets you moving faster than waiting for roadside assistance. Transitioning from safety to performance, let’s examine its technical thresholds.
| Safety Feature | GB40 | Competitor X |
|---|---|---|
| Reverse Polarity Protection | Yes | No |
| Spark-Proof Clamps | Yes | Yes |
| Thermal Cutoff | 140°F | 160°F |
What technical specifications set the GB40 apart?
With a peak current of 1000A and 12V/24V compatibility, the GB40 outperforms bulkier models. Its 24Wh LiFePO4 battery offers 500+ cycles at 80% capacity retention, and USB-C charging supports 18W PD input for rapid replenishment.
Key metrics include a standby drain of <0.1% per month and a 5V/3A USB-A output for charging devices. The force mode bypasses low-voltage detection (down to 1V) for deeply discharged batteries. Pro Tip: Use the USB-C port with a 20W+ charger to hit the 2.5-hour full charge time—slower chargers extend this to 4+ hours. For instance, a rider with a dead Harley-Davidson Softail can connect the GB40, toggle force mode, and crank the engine within seconds. But what about hybrid vehicles? The GB40 works on 12V auxiliary batteries in Prius models but won’t jump the high-voltage traction battery.
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Which vehicles are compatible with the GB40?
The GB40 supports gasoline engines up to 6.0L and diesel up to 3.0L, covering most cars, SUVs, trucks, and motorcycles. It’s incompatible with 24V commercial vehicles or EVs like Teslas, which require specialized equipment.
Compatibility hinges on the vehicle’s 12V battery system. For boats, ensure the battery isn’t isolated by a marine switch—connect directly to the starter motor terminals if necessary. Pro Tip: For diesel tractors or RVs, pair the GB40 with a NOCO GBX155 for higher capacity. Imagine a scenario where a Jeep Wrangler’s battery dies off-road; the GB40’s compact size fits in a glovebox, eliminating the need to carry heavy cables. Transitioning to maintenance, proper care extends its lifespan significantly.
| Vehicle Type | GB40 Support | Notes |
|---|---|---|
| Sedans (2.0L) | Yes | 1-2 clicks typical |
| Pickups (5.7L V8) | Yes (Force Mode) | May require 2 attempts |
| Motorcycles | Yes | Disconnect headlights first |
How to maintain the GB40 for optimal performance?
Store the GB40 at 50% charge in temperatures between -4°F and 113°F. Recharge every 6 months to prevent deep discharge damage, and clean clamps with isopropyl alcohol after saltwater exposure.
Cycle the battery fully 1-2 times yearly to recalibrate its fuel gauge. The LED status indicators show charge level: green (75-100%), yellow (50-75%), red (25-50%). Pro Tip: Avoid leaving it in direct sunlight—prolonged UV exposure degrades the ABS+PC housing. For example, a user storing the GB40 in a Arizona garage should keep it in a shaded compartment to prevent 150°F+ temps from accelerating capacity fade. But what if the battery drains completely? Use a USB-C PD charger to initiate a “wake-up” charge for 10 minutes before full recharging.
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FAQs
Yes, but connect directly to the starter motor if the battery switch is off. Saltwater-resistant clamps handle marine environments, but rinse with freshwater after use.
How long does a full charge last in storage?
Up to 1 year if stored at 50% charge and 77°F. Capacity drops 15% annually in optimal conditions.
Does the GB40 work on AGM batteries?
Yes—its Auto-Voltage Detection adjusts for AGM, gel, and flooded lead-acid batteries. Force Mode bypasses voltage checks for deeply drained AGMs.