Welcome. If you are using the NOCO Genius® Boost™ GB20. Read and understand the User Guide before operating the product to avoid any accident or damage.
About Noco GB20 Genius Boost
The NOCO Genius® Boost™ GB20 is an ultra-compact and portable lithium-ion jump starter for cars, boats, motorcycles, ATVs, lawn mowers, RVs, tractors, trucks and more. It’s extremely safe for anyone to use. It features spark proof technology and reverse polarity protection. The GB20 can instantly jump start most single battery applications, up to 20 times on a single charge. The GB20 is also equipped with a USB battery pack and LED flashlight, making it the ultimate emergency tool.
Download Noco Boost GB20 12V 400A User Manual
| Brand | Noco |
| Model | GB20 |
| Category |
Battery Charger |
| File Size | 55.26Kb |
| Pages | 11 pages |
| Language | English |
| 1417 views | |
Technical Specifications
| Internal battery: | Lithium Ion |
| Peak current rating: | 400A |
| joules 3s: | 4650 |
| Operating temperature: | -30°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 |
| Housing Protection: | IP65 (w/Ports Closed) |
| Cooling: | Natural Convection |
| Dimensions (L x W x H): | 6.7 x 3.2 x 1.7 Inches |
| Housing Protection: | IP65 |
| Cooling: | Natural Convection |
| Dimensions (L x W x H): | 6.7 x 3.2 x 1.7 Inches |
| Weight: | 2.1 Pounds |
Getting Started with Noco GB20
The GB20 comes partially charged out of the box and needs to be fully charged prior to use. Carefully read and understand the vehicle owner’s manual on specific precautions and recommended methods for jump starting the vehicle. Make sure to determine the voltage and chemistry of the battery by referring to your battery owner’s manual prior to using this product. The GB20 is for jump starting 12-volt lead-acid batteries only.
How to Connecting to the Battery.
Before connecting to the battery, verify that you have a 12-volt lead-acid battery. The GB20 is not suitable for any other type of battery. Identify the correct polarity of the battery terminals on the battery. The positive battery terminal is typically marked by these letters or symbol (POS,P,+). The negative battery terminal is typically marked by these letters or symbol (NEG,N,-). Do not make any connections to the carburetor, fuel lines, or thin, sheet metal parts. The below instructions are for a negative ground system (most common). If your vehicle is a positive ground system (very uncommon), follow the below instructions in reverse order.
- Connect the positive (red) battery clamp to the positive (POS,P,+) battery terminal.
- Connect the negative (black) battery clamp to the negative (NEG,N,-) battery terminal or vehicle chassis.
- When disconnecting, disconnect in the reverse sequence, removing the negative first (or positive first for positive ground systems).
Jump Starting Instruction Guide
- Verify the voltage and chemistry of the battery.
- Confirm the battery clamps are connected to the correct polarity battery terminals.
- Connect the HD X Connector to the GB20.
- Make sure all of the vehicle’s power loads (headlights, radio, air conditioning, etc.) are turned off before attempting to jump start the vehicle.
- Press the Power Button to begin jump starting. All LEDs will flash, indicating that all LEDs are properly functioning. If you are properly connected to the battery, the White Boost LED will illuminate. If the battery clamps are connected in reverse, the Red Error LED will illuminate. Reverse the connections to clear this error and then the White Boost LED will illuminate. The White Boost LED is illuminated, when the GB20 is ready to jump start your vehicle.
- Try starting the vehicle. Most vehicles will immediately start. Some vehicles may require the GB20 to be connected for up to 30 seconds before starting. If the vehicle does not start right away, wait 20-30 seconds and try again. Do not attempt more than five (5) consecutive jump starts within a fifteen (15) minute period. Allow the GB20 to rest for fifteen (15) minutes before attempting to jump start the vehicle again.
- Once you have started your vehicle, disconnect the battery clamps, and remove the GB20.
Low Voltage Batteries & Manual Override
The GB20 is designed to jump start 12-volt lead-acid batteries down to 2-volts. If your battery is below 2-volts, the Boost LED will be “Off”. This is an indication that the
GB20 can not detect a battery. If you need to jump start a battery below 2-volts there is a Manual Override feature, which allows you to force “On” the jump start function.
Before using the Manual Override feature, make sure the battery clamps are connected to the correct polarity battery terminals and the HD X Connect is connected to the GB20. To use the Manual Override feature, press and hold the Manual Override Button (a red exclamation point icon inside a red circle) for three (3) seconds. The White Boost LED will flash “On” and “Off” indicating you have successfully entered into Manual Override and it is ready to jump start your vehicle. If connected in reverse polarity, the Red Error LED will illuminate and the unit will not operate.
Most vehicles will immediately start. Some vehicles may require the GB20 to be connected for up to 30 seconds before starting. If the vehicle does not start right away,
wait 20-30 seconds and try again. Do not attempt more than five (5) consecutive jump starts within a fifteen (15) minute period. Allow the GB20 to rest for fifteen (15) minutes before attempting to jump start the vehicle again.
Troubleshoot the Error LED
The GB20 shall display an Error Condition when a reverse polarity condition is present, a battery below two (2) volts, or the internal battery overheating. When one of these Error Conditions are present, the following will happen:
| Error | Reason/Solution |
|---|---|
| Error LED Solid Red | Reverse polarity/ Reverse the battery connections. |
| Error LED Blinking Red w/Cables Connected Properly | The internal battery is too hot/ Allow the unit to cool. Bring the unit into cooler environment. |
| Boost Light Does Not Come On w/Cables Connected Properly | Connected battery is below 2-volts/Remove all loads, and try again, or use Manual Override Mode. |
Charging the GB20.
Connect the GB20 using the included USB Charge Cable to the USB IN port and the USB car charger. It can also be recharged from any USB powered port, like an AC adapter, car charger, laptop and more. The USB IN port is rated at 2.1 Amps to ensure safe and efficient charging of the internal lithium battery. Due to FCC regulations, we recommend not to charge and discharge the unit at the same time.
Charging Your Mobile Devices.
You can recharge virtually any USB device, like a smartphone. Connect the included USB Charge Cable to the USB OUT port and connect to your USB device. The number of times you can recharge a USB device will vary between devices. For recharge times, contact your device manufacturer.
LED Flashlight.
The GB20 has an integrated ultra-bright LED flashlight. It has seven (7) light modes that effect its performance and longevity: 100%, 50%, 10%, SOS, Blink, Strobe, and Off.
- To turn the flashlight “On” and “Off”, use the Power button with the light bulb icon.
- Press once to turn the flashlight “On” at 100% luminosity, again for 50% luminosity (within 3 seconds), again for 10% luminosity (within 3 seconds), again for SOS (within 3 seconds), again for Blink (within 3 seconds), again for Strobe (within 3 seconds) and again for “Off”.
- If a light mode is not selected within 3 seconds, it will remain “On” in the current light mode, and the next selection will turn the flashlight “Off”.
Depending on the mode selection, the GB20 will have various levels of output and runtime. Selecting a lower power level when using the GB20 for extended periods of time will prolong battery life.
Modes:
100% > 50% > 10% > SOS > Blink > Strobe > Off
Energy Saving Auto Shut Off.
The GB20 has a built in energy saving feature that will automatically turn the unit off after seven (7) hours. To continue using, simply power on the unit again.
Please read the instruction before using the Noco GB20 Genius Boost lithium jump starter. Detailed instruction can be found in Noco GB20 Genius Boost User Guide that you can download PDF file or read the user manual online in the link provided above
NOCO GB20 — Frequently Asked Questions
What is the NOCO GB20 and which engines is it for?
How do I jump start a vehicle with the GB20?
What do the LEDs mean (Power, Charge, Boost, Error)?
- Power LED: On when the unit is powered.
- Charge LEDs: Show internal battery level while charging/using.
- Boost LED (white): On when Boost is active and ready; flashes when Manual Override is active.
- Error LED (red): On for reverse polarity; blinks when internal battery temperature is too hot/too cold.