NOCO Boost Max GB251plus User Guide
- June 3, 2024
- NOCO
Table of Contents
NOCO Boost Max GB251plus
User Guide & Warranty
DANGER
READ AND UNDERSTAND ALL SAFETY INFORMATION BEFORE USING THIS PRODUCT. Failure
to follow these safety instructions may result in ELECTRICAL SHOCK, EXPLOSION,
FIRE, which may result in a SERIOUS INJURY, DEATH, or PROPERTY DAMAGE.
Electrical Shock.
The 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
product. Do not leave product unattended while in use. Do not attempt to jump
start a damaged or frozen battery. Use product only with batteries of
recommended voltage. Operate product in well ventilated areas. Fire. Product
is an electric device that emits heat and is capable of causing burns. Do not
cover product. Do not smoke or use any source of electrical spark or fire when
operating product. Keep product away from combustible materials.
Eye Injury.
Wear eye protection when operating product. Batteries can explode and cause
flying debris. Battery acid can cause eye and skin irritation. In the case of
contamination of eyes or skin, flush affected area with running clean water and
contact poison control immediately.
Explosive Gases.
Working in the vicinity of a lead acid is dangerous. Batteries generate
explosive gases during normal battery operation. To reduce risk of battery
explosion, follow all safety information instructions and those published by
the battery manufacturer and manufacturer of any equipment intended to be used
in the vicinity of the battery. Review wcautionary markings on these products
and on engine.
For more information and support visit: www.no.co/support
Important Safety Warnings
CAUTION:
Manual Override Mode disables all safety measures. When used improperly and/or
against our recommended use, it may result in injury or death and will void
your warranty. Risk of fire, explosion, and burns. Do not disassemble, crush,
heat above 60ºC (140ºF) or incinerate. This device is intended for temporary
use outdoors and reasonable care should be exercised when using this device in
wet conditions.
WARNING:
Do not overcharge the internal battery. See Instruction Manual. Do not smoke,
strike a match, or cause a spark in the vicinity of the power pack. Only
charge the internal battery in a well ventilated area when not in use.
CAUTION:
Risk of Injury To Persons. Do not use this product if the power cord or the
battery cables are damaged in any way. This device is not intended for use in
a commercial repair facility. This device is intended to be stored indoors
when not in use. This device shall not be stored or left outdoors when not in
use.
Proposition 65.
WARNING: This product can expose you to chemicals including lead and exhaust fumes, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Personal Precaution
Only use product as intended. Someone should be within range of your voice
or close enough to come to your aid in case of emergency. Have a supply clean
water and soap nearby in the case of battery acid contamination. Wear complete
eye protection and protective clothing while working near a battery. Always
wash hands after handling batteries and related materials. Do not handle or
wear any metal objects when working with batteries including; tools, watches
or jewelry. If metal is dropped onto battery, it may spark or create a short
circuit resulting in electrical shock, fire, explosion which may result in
injury, death or property damage. Minors. If the product is intended by
“Purchaser” to be used by a minor, purchasing adult agrees to provide detailed
instructions and warnings to any minor prior to 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.
Choking Hazard
Accessories may present a choking hazard to children. Do not leave
children unattended with product or any accessory. The product is not a toy.
Handling
Handle 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 products with a damaged power cord. Humidity and
liquids may damage product. Do not handle the product or any electrical
components near any liquid. Store and operate the product in dry locations.
Do not operate product if it becomes wet. If product is already operating and
becomes wet, disconnect it from the battery and discontinue use immediately.
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
product may cause injury, death or damage to property. If 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 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 -20º C to 50º C. Do not operate outside of temperature ranges. Do not jump start a frozen battery. Discontinue use of 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 -20ºC to +50ºC (0ºC ~ +25ºC daily average). Never exceed 80ºC
under any condition.
Compatibility
The product is only compatible with 12-volt lead-acid battery systems only.
Do not attempt to use product with any other type of battery. Jump starting
other battery chemistries may result in injury, death or property damage.
Contact the battery manufacturer prior to attempting to jump start the
battery. Do not jump start a battery if you are unsure of the battery’s
specific chemistry or voltage.
The Battery
The built-in lithium-ion battery in the product should be replaced only by
NOCO, and must be recycled or disposed of separately from household waste. Do
not attempt to replace the battery yourself and do not handle a damaged or
leaking lithium-ion battery. Never dispose of battery in household trash.
Disposal of batteries in household trash is unlawful under state and federal
environmental laws and regulations. Always take used batteries to your local
battery recycling center. If the product battery is excessively hot, emitting
an odor, deformed, cut, or is experiencing or demonstrating an abnormal
occurrence, immediately stop all use and contact NOCO.
Battery Charging
Charge the product with the included 12VDC car charger or XGC4 wall
charger. Do not use generic or third-party power adapters, as they may present
a serious electrical risk that can result in injury to person, Device, and
property. Using damaged cables or chargers, or charging when moisture is
present, can result in electric shock. NOCO is not responsible for the user’s
safety, damage to Device, or damage to property when using accessories or
power supplies that are not approved by NOCO. When using the XGC4 wall
charger, make sure that the AC plug is fully inserted into the adapter before
you plug it into a power outlet. The power adapter may become warm during
normal use, and prolonged skin contact may cause bodily injury. Always allow
adequate ventilation around the power adapter while in use. To ensure maximum
battery life, avoid charging Your product for more than a week at a time, as
overcharging may shorten battery life. Over time, an unused product will
discharge and must be recharged before use. Disconnect the product from power
sources when not in use. Use the product only for their intended purposes.
Medical Devices
Product may emit electromagnetic fields. Product contains magnetic
components which may interfere with pacemakers, defibrilators, or other medical
devises. These electromagnetic fields may interfere with pacemakers or other
medical devices. Consult with your physician prior to use if you have any
medical device including pacemakers. If you suspect the product is interfering
with a medical device, stop using the product immediately and consult your
physician.
Medical Conditions
If you have any medical condition that you believe could be affected by
product, including but not limited to; seizures, blackouts, eyestrain or
headaches, consult your physician prior to use of product. The use of a
integrated high-powered flashlight contains a light sensitivity hazard. Use of
the light in Strobe Mode may cause seizures in persons with photosensitive
epilepsy, which may result in serious injury or death.
Light
Staring directly into the light beam or shine of the flashlight may result
in permanent eye injury. The product is equipped with a high output LED pre-
focused lamp that emits a powerful beam at the highest setting.
Cleaning
Power off the product before attempting any maintenance or cleaning. Clean
and dry 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 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. 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 them to malfunction.
Model Number: GB251This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
How To Use
Step 1: Charge the GB251.
The GB251 comes partially charged out of the box and needs to be fully charged
prior to use. Connect the GB251 using the included 12V DC car charger or XGC4
wall charger to the 12V IN port. The time to recharge a GB251 will differ
based on the discharge level and the power source used. Actual results may
vary due to battery conditions and level of discharge. When recharging, the
charge level of the internal battery is indicated by the Charge LEDs. The LEDs
will slowly pulse ‘On’ and ‘Off’ and become solid until all four Charge LEDs
are on. When the battery is fully charged, the Green 100% LED will be solid,
and the 25%, 50% and 75% Charge LEDs will turn “Off”. From time to time, the
Green 100% LED will pulse indicating maintenance charging is occuring.
Step 2: Connect to the Battery
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 GB251 is for jump starting 24-volt lead-acid battery systems only. Before connecting to the battery, verify that you have a 24-volt lead-acid battery system. The GB251 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), consult the vehicle’s manual for proper jump starting instructions.
- Connect the positive (red) battery clamp to the positive (POS,P,+) battery terminal and the negative (black) battery clamp to the negative (NEG,N,-) battery terminal or vehicle chassis.
Step 3: Jump Starting.
- 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, and all LEDs will flash once. If you are properly connected to the battery, the white boost LED will illuminate and the battery charge LEDs will chase. A 60-second timeout countdown will begin as soon as a battery is detected.
- Try starting the vehicle. Most vehicles will immediately start. Some vehicles may require the GB251 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 GB251 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 GB251.
60-Second Timeout
A 60-second countdown will be initiated as soon as a battery is detected.
After 60 seconds have elapsed, the jump-starting function will be disabled.
The boost LED will turn off and the internal battery charge LEDs will indicate
the current charge level of the unit. To reset the jump-starting function,
press the power button to power off the unit. Press the power button again to
power on the unit and restart the jump-starting function.
CAUTION
60-SECOND TIMEOUT IS DISABLED WHILE USING MANUAL OVERRIDE MODE. POWER WILL
CONTINUE TO BE SUPPLIED WHILE MANUAL OVERRIDE IS ACTIVE. TO MAXIMIZE THE
NUMBER OF JUMP-STARTS, IT IS RECOMMENDED TO TURN OFF THE BOOST-UNIT AS SOON AS
THE VEHICLE HAS STARTED.
Low Voltage Batteries & Manual Override.
The GB251 is designed to jump start 24-volt lead-acid battery systems down to
3-volts. If your battery is below 3-volts, the boost LED will be “off”. This
is an indication that the GB251 can not detect a battery. If you need to jump
start a battery below 3-volts there is a manual override feature, which allows
you to force “on” the jump start function. If the battery is below 3-volts,
the boost LED will be off and the voltmeter will not display a voltage.
CAUTION.
USE THIS MODE WITH EXTREME CARE. THIS MODE IS FOR 24-VOLT LEAD-ACID BATTERIES
ONLY. BOTH THE SPARK PROOF AND REVERSE POLARITY PROTECTION FEATURES ARE
DISABLED. PAY VERY CLOSE ATTENTION TO THE POLARITY OF THE BATTERY BEFORE USING
THIS MODE. DO NOT ALLOW THE POSITIVE AND NEGATIVE BATTERY CLAMPS TO TOUCH OR
CONNECT TO EACH OTHER AS THE PRODUCT WILL GENERATE SPARKS. THIS MODE USES VERY
HIGH CURRENT (UP TO 3000 AMPS) THAT CAN CAUSE SPARKS AND HIGH HEAT IF NOT USED
PROPERLY. IF YOU ARE UNSURE ABOUT USING THIS MODE, DO NOT ATTEMPT AND SEEK
PROFESSIONAL HELP.
Powering Your USB & 12V Devices.
The GB251 has (2) USB-OUT ports and a 12V-OUT port (12V AUX/ cigarette lighter
port). Plug-in any standard USB device or 12V device (Up to 15A) and turn the
GB251 “on” to start powering your devices.
Interface
1.) Internal Battery Level Indicates the charge level of the internal battery.
2.) Error LED Illuminates red if reverse polarity is detected, or blinks
“on” and “off” in various sequences (from 1 to 6 blinks) to convey error
conditions.
3.) Hot LED Illuminates solid red; unit is fully operational, but
approaching upper temperature limit. Flashing red; unit is too hot to jump
start, only the flashlight is available in this state.
4.) Cold LED Illuminates solid blue; unit is fully operational, but
approaching lower temperature limit. Flashing blue; unit is too cold to jump
start, only the flashlight is available in this state.
5.) Power Button Push to turn unit “on” & “off”.
6.) Power LED Illuminates white when unit is “on”. Will illuminate orange
after the 60-second timeout countdown until the clamps are removed from the
Car Battery or the GB251 is power cycled ‘off’ and back ‘on’ again.
7.) Light Mode Button Toggles the ultra-bright LED light through 7 light
modes: 100% > 50% > 10% > SOS > Blink > Strobe > Off
8 . Voltmeter/Countdown Timer. The built-in voltmeter reads the voltage
of the vehicle’s battery for enhanced diagnostics and troubleshooting. The
voltmeter will automatically read the voltage of any battery (or battery
system) when the battery clamps are connected – even if the unit is powered
off. The voltmeter will read voltage between ~3V to ~30V. If the connected
battery is below 3V, nothing will display. In this situation, it is likely
there is a load(s) on the battery, such as, headlights or an AC fan that
should be shut off before attempting to start the vehicle. While the unit is
on and after a battery is detected, the voltmeter will display the 60-second
timeout countdown.
9.) Boost LED Illuminates white when boost is active. If the unit is
connected properly to a battery, the GB251 will automatically detect a battery
and go into boost mode (LED flashes white when manual override feature is
active).
10.) Manual Override Button To enable, push and hold for three (3)
seconds. WARNING: Disables safety protection and manually forces boost
“on”. Only for use when a battery voltage is too low to be detected.
Troubleshooting
Error | Reason/Solution |
---|
| Error LED: Solid Red| Reverse polarity / Reverse the battery
connections.
Error LED: Blinking Red
w/Cables Connected Properly
| Short circuit detected at the clamps. / Have battery checked by a
professional.
Single (1) Flash| Short circuit detected on battery clamps. / Remove all
loads, reconnect clamps to battery.
Double (2) Flash| High voltage detected at clamps (the GB251 is
connected to a voltage system greater than 24V).
Quadruple (4) Flash| Charge timeout error (i.e. the GB251 has been in
bulk charge for too long)
Quintuple (5) Flash| XGC OUT over current (i.e. more than 15amps is
being drawn from the XGC OUT port)
Sextuple (6) Flash| BMS (Battery Management System) Fault. (Power GB251
“off” and “on” again to clear. If problem persists contact Customer Support)
**| Hot LED: Solid| Unit is fully operational, but approaching upper
temperature limit. / Allow the unit to cool.
Hot LED: Flashing| Unit is too hot to jump start, only the flashlight is
available in this state. / Allow the unit to cool.
Hot LED: Flashes Then All LEDs Off| Unit is too hot to jump start or use
other functions. / Allow the unit to cool, and bring the unit into cooler
environment.
**| Cold LED: Solid| Unit is fully operational, but approaching lower
temperature limit. / Allow the unit to warm up.
Cold LED: Flashing| Unit is too cold to jump start, only the flashlight
is available in this state / Allow the unit to warm up.
Cold LED: Flashes Then All LEDs Off| Unit is too cold to jump start or
use other functions. / Allow the unit to warm up, and bring the unit into
warmer environment.
| Boost Light Does Not Come On w/Cables Connected Properly|
Connected battery is below 3-volts / Remove all loads, and try again, or use
manual override mode.
Technical Specifications
Internal Battery: 137Wh Lithium Ion | 12V (Input): 12V/5A (14V Max) |
---|---|
Peak Current Rating: 3000A | 12V (Output): 12V, 15A Max |
Operating Temperature: -20°C to +50°C | Housing Protection: IP65 |
(w/Ports Closed)
Charging Temperature: 0ºC to +40ºC| Cooling: Natural Convection
Storage Temperature: -20ºC to +50ºC (Avg Temp.)| Dimensions (L x W x
H): 12.5 x 13.65 x 3.7 Inches
USB (Output): 5V, 2.1A| Weight: 13.65 Pounds
NOCO One (1) Year Limited Warranty
NOCO warrants that this product (the “Product”) will be 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 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.
NOCO’S LIABILITY HEREUNDER IS EXPRESSLY LIMITED TO REPLACEMENT OR REPAIR. TO THE MAXIMUM EXTENT PERMITTED BY LAW, NOCO SHALL NOT BE LIABLE TO ANY PURCHASER OF THE PRODUCT OR ANY THIRD PARTY FOR ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOST PROFITS, PROPERTY DAMAGE OR PERSONAL INJURY, RELATED IN ANY WAY TO THE PRODUCT, HOWSOEVER CAUSED, EVEN IF NOCO HAD KNOWLEDGE OF THE POSSIBILITY OF SUCH DAMAGES. THE WARRANTIES SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND THOSE ARISING FROM COURSE OF DEALING, USAGE OR TRADE PRACTICE. IN THE EVENT THAT ANY APPLICABLE LAWS IMPOSE WARRANTIES, CONDITIONS OR OBLIGATIONS THAT CANNOT BE EXCLUDED OR MODIFIED, THIS PARAGRAPH SHALL APPLY TO THE GREATEST EXTENT ALLOWED BY SUCH LAWS.
This Limited Warranty is made solely for the benefit of the original purchaser of the Product from NOCO or from a NOCO approved reseller or distributor and is not assignable or transferable. To assert a warranty claim, the purchaser must: (1) request and obtain a return merchandise authorization (“RMA”) number and return location information (the “Return Location”) from NOCO Support by emailing support@no.co or by calling 1.800.456.6626; and (2) send the Product, including RMA number, receipt or a warranty fee (fee required only if not providing receipt) of 45% of MSRP of the defective Product (the “Warranty Fee”) [RMA will include applicable Warranty Fee amount] to the Return Location. DO NOT SEND IN THE PRODUCT WITHOUT FIRST OBTAINING AN RMA FROM NOCO SUPPORT. The original purchaser is responsible (and must prepay) all packaging and transportation costs to ship products for warranty service. NOTWITHSTANDING THE ABOVE, THIS LIMITED WARRANTY IS VOID AND DOES NOT APPLY TO PRODUCTS THAT: (a) are misused, mishandled, subjected to abuse or careless handling, accident, improperly stored, or operated under conditions of extreme voltage, temperature, shock, or vibration beyond NOCO’s recommendations for safe and effective use; (b) improperly installed, operated or maintained; (c) are/were modified without the express written consent of NOCO; (d) have been disassembled, altered or repaired by anyone other than NOCO; (e) the defects of which were reported after the Warranty Period. THIS LIMITED WARRANTY DOES NOT COVER: (1) 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.
HASSLE-FREE WARRANTY CONDITIONS
These conditions apply only to Product during the Warranty Period. The Hassle-
Free Warranty is void either by elapsed time from date of purchase (elapsed
time from serial number date, if no proof of purchase) or from the conditions
listed earlier in this document. Return Product with the appropriate
documentation.
With Receipt:
1 Year: No charge. With proof of purchase, the warranty period begins on date of purchase.
With NO Receipt:
1 Year: No charge. With no proof of purchase, the warranty period begins on the serial number date. 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.
For more information and support visit: www.no.co/support
References
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