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    Home » NOCO GB250 250A Lithium Jump Starter Instructions Guide
    NOCO

    NOCO GB250 250A Lithium Jump Starter Instructions Guide

    By Gabriel SmithSeptember 8, 2025Updated:December 4, 2025No Comments9 Mins Read
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    NOCO GB250 250A Lithium Jump Starter

    NOCO-GB250-250A-Lithium-Jump-Starter-PRODUCT

    Introduction

    The NOCO GENIUSPRO50 represents some of the most innovative and advanced technology on the market, making each charge simple and easy. It is quite possibly the safest and most efficient charger you will ever use. The GENIUSPRO50 is designed for charging all types of 6V, 12V and 24V lead-acid batteries, including Wet (Flooded), Gel, MF (Maintenance-Free), CA (Calcium), EFB Enhanced Flooded Battery), and AGM (Absorption Glass Mat), in addition to 6V, 12V and 24V Lithium (LiFePO4) batteries.

    It is suitable for charging battery capacities up to 2000 Amp-Hours (6V and 12V), 1000 Amp-Hours (24V) and maintaining all battery sizes. Before using the charger, carefully read the battery manufacturer’s specific precautions and recommended rates of charge for the battery. Make sure to determine the voltage and chemistry of the battery by referring to your battery owner’s manual prior to charging.

    Safety Instructions

    • Electrical Shock. A product is an electrical device that can shock and cause serious injury. Do not cut power cords. Do not submerge in water or get wet.
    • Explosion. Unmonitored, incompatible, or damaged batteries can explode if used with the product. Do not leave the product unattended while in use. Do not attempt to charge a damaged or frozen battery. Use the product only with batteries of the recommended voltage. Operate the product in well-ventilated areas.
    • Fire. A product is an electrical device that emits heat and is capable of causing burns. Do not cover the product. Do not smoke or use any source of electrical spark or fire when operating the product. Keep the product away from combustible materials.
    • Eye Injury. Wear eye protection when operating the product. Batteries can explode and cause flying debris. Battery acid can cause eye and skin irritation. In the case of contamination of the eyes or skin,
      Flush the affected area with running clean water and contact poison control immediately.
    • Explosive Gases. Working in the vicinity of a lead-acid battery is dangerous. Batteries generate explosive gases during normal battery operation. To reduce the risk of battery explosion, follow all safety information instructions and those published by the battery manufacturer and the manufacturer of any equipment intended to be used in the vicinity of the battery. Review cautionary markings on these products and on the engine.

    Mounting

    It is important to keep in mind the distance to the battery. The DC cable length from the charger, with either the battery clamp or eyelet terminal connectors, is approximately 72 inches (182.88cm). Allow for 12 inches (30.4cm) of slack between connections.

    Proposition 65

    Battery posts, terminals, and related accessories contain chemicals, including lead. These materials are known to the State of California to cause cancer and birth defects, and other reproductive harm.

    Minors

    If the product is intended by “Purchaser” to be used by a minor, the purchasing adult agrees to provide detailed instructions and warnings to any minor before use. Failure to do so is the sole responsibility of the “Purchaser,” who agrees to indemnify NOCO for any unintended use or misuse by a minor.

    Handling

    Handle the product with care. The product can become damaged if impacted. Do not use a damaged product, including, but not limited to, cracks to the casing or damaged cables. Do not use the product with a damaged power cord. Exposure to humidity and liquids may damage the product. Store and operate products in dry locations. Do not allow the hanger to remain wet. Do not disconnect the product by pulling on the cables.

    Modifications

    Do not attempt to alter, modify or repair any part of the product. Disassembling the product may cause injury, death or property damage. If the product becomes damaged, malfunctions or comes in contact with any liquid, discontinue use and contact NOCO. Any modifications to the product will void your warranty.

    Accessories

    This product is only approved for use with NOCO accessories. NOCO is not responsible for user safety or damage when using accessories not approved by NOCO.

    Location

    Prevent battery acid from coming in contact with the product. Do not operate the product in a closed-in area or an area with restricted ventilation. Do not set a battery on top of the product. Position cable leads to avoid accidental damage by moving vehicle parts (including hoods and doors), moving engine parts (including fan blades, belts, and pulleys), or what could become a hazard that may cause injury or death.

    Operating Temperature

    This product is designed to work in ambient temperatures between -4° F and 122° F (-20° C and 50° C). Do not store or operate outside of the specified temperature ranges. Do not charge a frozen battery. Discontinue use of the product immediately if the battery becomes excessively warm.

    Storage

    Do not use or store your product in areas with high concentrations of dust or airborne materials. Store your product on flat, secure surfaces so it’s not prone to falling. Store your product in a dry location. The storage temperature is -30ºC – 60ºC (average temperature). Never exceed 80ºC under any condition.

    Compatibility

    The product is only compatible with 6-volt, 12-volt and 24-volt Lead-Acid, AGM, and 6-volt, 12-volt and 24-volt Lithium batteries. Do not attempt to use the product with any other type of battery. Charging other battery chemistries may result in injury, death or property damage. Contact the battery manufacturer before attempting to charge the battery. Do not charge a battery if you are unsure of the battery’s specific chemistry or voltage.

    Medical Devices

    The product may emit electromagnetic fields. The product contains magnetic components which may interfere with pacemakers, defibrillators, or other medical devices. These electromagnetic fields may interfere with pacemakers or other medical devices. Consult with your physician before use if you have any medical devices, including pacemakers. If you suspect the product is interfering with a medical device, stop using the product immediately and consult your physician.

    Cleaning

    Power off the product before attempting any maintenance or cleaning. Clean and dry the product immediately if it comes in contact with liquid or any type of contaminant. Use a soft, lint-free (microfiber) cloth. Avoid getting moisture in openings.

    Explosive Atmospheres

    Obey all signs and instructions. Do not operate the product in any area with a potentially explosive atmosphere, including fueling areas or areas which contain chemicals or particles such as grain, dust or metal powders.

    High-Consequence

    Activities. This product is not intended for use where the failure of the product could lead to injury, death or severe environmental damage.

    Radio Frequency Interference

    The product is designed, tested, and manufactured to comply with regulations governing radio frequency emissions. Such emissions from the product can negatively affect the operation of other electronic equipment, causing it to malfunction.

    Features

    1. Internal Battery Level indicates the charge level of the internal battery.
    2. Power Button Push to turn unit “On” & “Off”.
    3. Power LED Illuminates White when the unit is “On”.
    4. Light Mode Button Toggles the ultra-bright LED light through 7 light modes: 100% > 50% > 10% > SOS > Blink > Strobe > Off.
    5. Voltmeter. The built-in voltmeter reads the voltage of the vehicle’s battery for enhanced diagnostics and troubleshooting.
    6. The voltmeter will read voltage between ~3V and ~20V. If the connected battery is below 3V, nothing will display.
    7. Boost LED Illuminates White when Boost is active.
    8. Manual Override Button: To enable, push and hold for three (3) seconds.NOCO GB150 3000A Lithium Jump Starter

    TroubleshootingNOCO GB150 3000A Lithium Jump Starter

    Technical Specifications

    • Internal Battery: Lithium Ion
    • Peak Current Rating: 3000A
    • Operating Temperature: -20°C to +50°C
    • Charging Temperature: 0ºC to +40ºC
    • Storage Temperature: -20ºC to +50ºC (Avg Temp.)
    • Micro USB (Input): 5V, 2.1A
    • USB (Output): 5V, 2.1A
    • 12V (Input): 12V, 5A
    • 12V (Output): 12V, 15A
    • Housing Protection: IP65 (w/Ports Closed)
    • Cooling: Natural Convection
    • Dimensions (L x W x H): 12.3 x 7 x 2.7 Inches
    • Weight: 7.5 Pounds

    Warranty

    NOCO One (1) Year Limited Warranty

    NOCO warrants that this product (the “Product”) will be NOCO GB150 3000A Lithium Jump Starter free from defects in material and workmanship for a period of one (1) year from the date of purchase (the “Warranty Period”). For defects reported during the Warranty Period, NOCO will, at its NOCO GB150 3000A Lithium Jump Starter discretion, and subject to NOCO’s technical support analysis, either repair or replace defective Products. Replacement parts and products will be new or serviceably used, comparable in function and performance to the original part and warranted for the remainder of the original Warranty Period.

    THIS LIMITED WARRANTY DOES NOT COVER: (1) NOCO GB150 3000A Lithium Jump Starter normal wear and tear; (2) cosmetic damage that does not affect functionality; or (3) Products where the NOCO serial number is missing, altered, or defaced. You may register your NOCO product online at: no.co/register. If you have any questions regarding your warranty or product, contact NOCO Support (email and phone number above) or write to: The NOCO Company, at 30339 Diamond Parkway, #102, Glenwillow, OH 44139 USA.

    Customer Support

    • Website: https://no.co/support
    • Ph: 1.800.456.6626

    FAQs

    Q: What vehicles can the GB250 jump-start?

    Diesel engines up to three litres and petrol engines up to six litres are compatible with the GB250. Cars, motorbikes, boats, ATVs, and other small engines can all use it.

    Q: How many jump starts can I get on a single charge?

    A 1.5-litre engine can receive up to 20 jump starts from a fully charged GB250. Larger engines or frequent use reduce the number of jumps.

    Q: Can the GB250 be used for USB charging?

    Indeed. In an emergency, it has a 5V USB connector for charging tablets, cellphones, and other USB devices.

    Q: Can I leave the GB250 connected to the vehicle battery?

    No, to prevent overloading or harming the equipment, always disconnect the jump starter after the car has started.

    Q: How do I know if the GB250 is fully charged?

    The battery level is displayed by the LED indicators. The jump starter is fully charged and operational when every light is solid.

    Q: Can the GB250 jump-start a dead battery?

    Indeed. As long as the engine size is within its rated capacity, the GB250 is built to start with entirely dead batteries.

    Q: Can it start multiple vehicles without recharging?

    Yes, however, the device’s capacity restricts how many jumps can be made. To sustain performance, let it recharge after frequent use.

    Q: Can the GB250 be used in extreme temperatures?

    It is appropriate for both hot summers and cold winters because it operates in temperatures between –20°C and 60°C (–4°F and 140°F). To extend battery life, keep it out of intense heat for extended periods of time.

    GB250 250A car jump starter NOCO GB250 compact lithium car starter NOCO GB250 automotive battery booster NOCO GB250 lithium jump starter NOCO portable jump starter
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    Gabriel Smith

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