Where can I obtain the user manual for Boost Max?
| GB250+ | User Guide |
| GB251+ | User Guide |
| GB500+ | User Guide |
Which Boost should I get for my vehicle?
| Boost | Gasoline Engine | Diesel Engine | |
|---|---|---|---|
| GB20 | Up to 4.0L | Learn more. | |
| GB40 | Up to 6.0L | Up to 3.0L | Learn more. |
| GB50 | Up to 7.0L | Up to 4.5L | Learn more. |
| GB70 | Up to 8.0L | Up to 6.0L | Learn more. |
| GB150 | Up to 9.0L | Up to 7.0L | Learn more. |
| Boost X | Gasoline Engine | Diesel Engine | |
|---|---|---|---|
| GBX45 | Up to 6.5L | Up to 4.0L | Learn more. |
| GBX55 | Up to 7.5L | Up to 5.0L | Learn more. |
| GBX75 | Up to 8.5L | Up to 6.0L | Learn more. |
| GBX155 | Up to 10.0L | Up to 8.0L | Learn more. |
| Boost Max | Gasoline Engine | Diesel Engine | ||
|---|---|---|---|---|
| GB250+ | 12V | Up to 16.0L | Up to 16.0L | Learn more. |
| GB251+ | 24V | Up to 32.0L | Up to 32.0L | Learn more. |
| GB500+ | 12V & 24V | Up to 45.0L | Up to 45.0L | Learn more. |
What is the starting current on Boost Max?
| GB250+ | 5,250 Amps (Peak) |
| GB251+ | 3,000 Amps (Peak) |
| GB500+ | 6,250 Amps (Peak) |
What is the lumen rating for the LED flashlight?
| GB250+ | 600 lumen LED flashlight. |
| GB251+ | 600 lumen LED flashlight. |
| GB500+ | 2200 lumen LED flashlight. |
What if the clamps touch?
Nothing, it is perfectly safe. Boost has built in sensors that prevent power from being delivered, unless a battery is detected.
Can the clamps be connected to the battery backwards?
The error LED will illuminate, but it is perfectly safe and there won’t be any sparks. With Reverse Polarity Protection, Boost will not deliver power unless it is connected to the battery correctly.
What is the countdown timer on Boost Max?
You will need to start the vehicle before the time runs out. It is designed to conserve the power of the internal battery because this model is capable of unloading more power than previous models.
Is Boost Max waterproof?
NOCO Boost models carry a rating of IP65 with the port covers closed, which means they can be exposed to water without any issues, however, they cannot be submerged in water.
How long is the warranty on Boost Max?
NOCO Boost Max has a one-year limited warranty. Visit our Support Page to learn more about Warranty or find the User Guide to your specific Boost Max model.
What are the operating temperatures for Boost Max?
NOCO Boost can operate within the temperature range -4ºF to 122ºF (-20ºC to 50ºC). Boost is equipped with thermal sensors that will prevent it from operating outside of this temperature range for your own safety.
What is the optimal storage temperature for Boost Max?
NOCO Boost Max should not be stored below -4ºF (-20ºC), and not exceed 122ºF (50ºC) for any reason. Storing Boost Max outside of these ranges can cause damage to multiple crucial components of the jump starter. This applies to all Boost models.
Can I recharge Boost Max in extreme heat?
NOCO Boost Max should not be stored below -4ºF (-20ºC), and not exceed 122ºF (50ºC) for any reason. Storing Boost Max outside of these ranges can cause damage to multiple crucial components of the jump starter. This applies to all Boost models.
How long does Boost Max take to recharge?
NOCO Boost Max is equipped with a 12V XGC charging port. Connect Boost Max using the included 12V DC car charger or XGC4 wall charger to the 12V IN port.
| GB250+ | 56W Charging 8.5 hours | How to Recharge GB250+. |
| GB251+ | 56W Charging 8.5 hours | How to Recharge GB251+. |
| GB500+ | 56W AC Charging 6-8 hours | How to Recharge GB500+. |
How long does Boost Max hold a charge?
All Boost Max models can hold 70% of its rated capacity for up to one year. For optimal performance, we recommend charging the device at least every 4-6 months, after initial charge.
What is the internal battery capacity of Boost Max?
| GB250+ | 242 Watt-Hour Lithium-Ion |
| GB251+ | 137 Watt-Hour Lithium-Ion |
| GB500+ | 266 Watt-Hour Lithium-Ion |
What devices can Boost Max recharge?
Boost Max can recharge any device that uses USB. This includes all generations of smartphones on the market, as well as HD action cameras, tablets, music players, headphones, earbuds, wireless speakers and more.
| GB250+ | Charging USB Devices with GB250+ |
| GB251+ | Charging USB Devices with GB251+ |
| GB500+ | Charging USB Devices with GB500+ |
Can Boost Max recharge my smartphone?
Yes. Boost Max can recharge any device that uses USB charging.
What is the USB port ratings on Boost Max?
Boost Max has two USB out ports both rated at 5V, 2.1 Amps.
Is Boost Max compatible with 220V outlets?
Yes. Boost Max is recharged by provided 56-Watt XGC Adapter, which comes with power connections for Type G (UK), Type I (AU), Type C (EU) and Type A (NA) plugs.
What types of batteries can Boost Max jump?
NOCO Boost Max can only jump start lead acid batteries. This includes wet, gel, maintenance free, enhanced flooded battery, and absorbent glass mat batteries.
| GB250+ | 12-Volt lead-acid battery systems. |
| GB251+ | 24-Volt lead-acid battery systems. |
| GB500+ | 12-Volt and 24-Volt lead-acid battery systems. |
How large of an engine can Boost jump start?
| GB250+ | Gasoline and diesel engines up to 16L. |
| GB251+ | Gasoline and diesel engines up to 32L. |
| GB500+ | Gasoline and diesel engines up to 45L. |
Can I use Boost Max on my hybrid vehicle?
Boost jump starters are compatible with the starting-battery in hybrid vehicles as long as the starting-battery in question is a 12V Lead-Acid battery. These include Wet-Cell, Gel-Cell, AGM, AGM+, Maintenance Free, and EFB batteries. Boost will also work with Calcium-Calcium and Calcium-Lead batteries. As long as the unit is used on a 12V ignition system for a gas or diesel engine and on one of the aforementioned battery types, it will work.
Should I charge Boost Max before using it?
Yes. Boost Max will arrive partially charged. Fully charge the unit before first using it to ensure optimal performance.
Can Boost Max jump start a car from the 12V plug?
No. The 12V ports in a car are current limited at 8 Amps. Boost Max delivers a maximum range of 3,000A to 6,250A, depending on your model, which would cause severe damage to the port. Plugging the 12V XGC Cable into the vehicle’s 12V plug will not jump start the vehicle.
Can Boost Max jump start a 6V vehicle?
No. Boost Max is only designed for 12V or 24V vehicles. Jump starting a 6V battery could become extremely dangerous.
Can Boost Max jump start a lithium battery?
No. Lithium batteries are sensitive to how current is applied to the battery. Jump starting a lithium battery could become extremely dangerous.
Can Boost Max be left in direct sunlight in a car?
No. Remove Boost Max from direct sunlight. The ambient temperature in car can increase up to 50ºC (122ºF) within 10 minutes.
Can the battery inside Boost Max be replaced?
No. We do not replace the batteries or repair the units, but replace the whole unit if it tests faulty.
Can Boost Max charge my car’s battery?
No. While Boost Max can jump start your car battery it is not a battery charger. If you need to charge your car battery we recommend using NOCO Genius for charging and maintaining 6V or 12V batteries lead acid, AGM or Lithium batteries.
What is Boost Max isn’t detecting my car’s battery?
If Boost Max is not detecting the battery it is possible the voltage is too low to detect. Boost Max 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 Boost Max 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.
| GB250+ | Using Manual Override on GB250+. |
| GB251+ | Using Manual Override on GB251+. |
| GB500+ | Using Manual Override on GB500+. |
How heavy is Boost Max?
| GB250+ | 14.7 lbs (6.67 kg) |
| GB251+ | 13.6 lbs (6.17 kg) |
| GB500+ | 19.25 lbs (8.73 kg) |
Can I take Boost Max on an airplane?
No. FAA Guidelines limit lithium batteries larger than 100Wh, all Boost Max models exceed this limitation. No-Lithium batteries are allowed to be checked in luggage.
Can Boost Max jump start a motorcycle?
Yes, as long as the battery in the motorcycle is a 12V Lead Acid battery you can use GB250+ or GB500+ to jump start it.
Can Boost Max jump start a motorcycle using an SAE harness?
No. There isn’t a direct Boost-to-SAE adapter since the SAE cable isn’t rated for the output of the Boost.
Does Boost Max come with a carrying case?
Yes. All Boost Max units come packaged with a carrying case for that unit. At this time we do not sell replacement carrying case.
Is Boost Max made in the USA?
NOCO Boost Max Jump Starters are designed in the United States and manufactured in various countries around the world.
Can Boost Max power other 12V DC devices, like an air compressor?
Yes. All Boost Max models have a 12V Out port that can power 12V accessories, such as air compressors.
Is it possible to accidentally overcharge Boost Max?
Boost Max jump starters have built-in overcharge protection and can be left on a charger at all times.
I lost my charging adapter. Where can I get a replacement?
Boost Max recharges using the 56W XGC Power Adapter. This is available for purchase here on our website.
Does NOCO sell replacement clamps or longer cables?
Boost Max GB500+ has removeable clamps that can be replaced. NOCO also sells a longer 72-inch (182 CM) version of the clamp cables. They can be found on our website:
| GBC004 | Boost Max Battery Clamps |
| GBC005 | Boost Max 72-inch Battery Clamps |
My Boost Max has reached its End of Life. Where can I safely dispose of it?
We always recommend checking in with your local laws, and regulations for proper disposal of your Lithium battery products, like the Boost. If you live in the USA or Canada, you can follow this link to see where to drop off the Lithium product for recycling in your area:
