Gmm U300 300W Portable Power Station User Manual

Gmm U300 300W Portable Power Station

IMPORTANT SAFETY INSTRUCTIONS

• Please read the user manual carefully before using this product to charge.

DANGERS:

• Non-compliance use may lead to serious injury or death.
• DO NOT disassemble, repair or modify the product or the battery.
• DO NOT touch the product or the plug-in points if your hands are wet.
• DO NOT connect any metallic objects to the AC input or output.
• DO NOT dispose of the product together with household waste.
• DO NOT use any inappropriate power cords.
• DO NOT move the product if it is recharging or in use.
• DO NOT put your fingers or hands into the product.
• DO NOT smoke in the vicinity of the battery and any spark/flame is also not allowed.
• DO NOT place the product close to or in a fire or expose it to heat. Keep out of direct sunlight.
• DO NOT charge, use or store the product in a bathroom or in an area exposed to rain or moisture. Doing so may cause short circuits, electric shocks, and/or fire.

WARNINGS

• Non-compliance use may lead to serious injury or death.
• Please turn off the output ports when no devices are connected to the product to prevent electric shocks.
• Use and store the power station only in a clean and dry environment, DO NOT use and store it in a dusty and wet environment.
• Check the product prior to every use. DO NOT use the product if it is damaged or broken.
• DO NOT use the product if the power cord is damaged or broken.
• Keep the power station away from children or pets. DO NOT let children use the power station.
• DO NOT use or store the product in an area or environment at high temperature.
• Should fluid from inside of the product come in contact with your skin or clothing, wash the affected areas with tap water.
• DO NOT place the product on its side or upside down while in use or storage.
• DO NOT use accessories for other usages.
• DO NOT overload the AC or DC outputs. Please check the specifications of output ports and devices before operation.
• Please turn off the output ports when no devices are connected to the product to prevent electric shocks.
• Only use the output socket to power external devices. Never connect the output to mains power under any circumstances.
• DO NOT operate the product above the specified input voltage.
• DO NOT use the product if it is not functioning correctly.
• DO NOT use a battery pack or appliance that is damaged or modified.
• Damaged or modified batteries may cause unpredictable behavior resulting in fire, explosion or risk of injury.
• DO NOT disassemble the product, take it to a qualified service person when service or repair is required. Incorrect reassembly may result in a risk of fire or electric shock.
• Be extremely cautious to reduce the risk of dropping a metal tool onto the battery. It might spark or short-circuit the battery or other electrical parts may cause an explosion.

WARNINGS:

• Non-compliance use may lead to serious injury or death.
• Please turn off the output ports when no devices are connected to the product to prevent electric shocks.
• Use and store the power station only in a clean and dry environment, DO NOT use and store it in dusty and wet environment.
• Check the product prior to every use. DO NOT use the product if it is damaged or broken.
• DO NOT use the product if the power cord is damaged or broken.
• Keep the power station away from children or pets. DO NOT let children use the power station.
• DO NOT use or store the product in an area or environment at high temperature.
• Should fluid from inside of the product come in contact with your skin or clothing, wash the affected areas with tap water.
• DO NOT place the product on its side or upside down while in use or storage.
• DO NOT use accessories for other usages.

CAUTIONS:

• Non-compliance use may lead to injuries and or property damage.
• DO NOT dismantle or modify the product. Doing so may cause irreversible damage to the product and void the warranty.
• DO NOT drop or strike the product. Doing so may cause circuit failures and cracks in the casing.
• DO NOT place the product under direct sunlight or place in high-temperature situations. Doing so may cause product malfunction or component degradation.
• DO NOT expose the product to strong electrostatic fields, strong magnetic fields, and/or radiation.
• Please check the product before each use. Stop using the product immediately if you notice unusual smells, heating, distortion, or any other abnormalities. Then please contact the dealer or our customer service centre.
• If you do not need to use the power station to power the CPAP or other device, you can press and hold the AC button or the DC button to manually turn off the power, in order to make the power station more durable.
• (Please don’t press both of the buttons at the same time.)
• Make sure that the product is properly secured when transporting it in a motor vehicle.
• Switch the product off immediately if it accidentally falls, drops, or is exposed to vibrations.
• Carefully read the instructions for the electric devices that you intend to connect to your product.
• Make sure that the device you are connecting is switched off before you connect it.
• Please dispose of the product according to the local recycling and environmental regulations.
• Serious injuries include  Blindness, burns, fractures, electric shock, poisoning, etc., which can lead to complications, hospitalization or permanent treatment.
• Injuries include  Burns, electric shock, etc., which do not lead to hospitalization or permanent treatment.
• Property damage includes  Buildings, belongings pets, etc.

PRODUCT OVERVIEW

• Power Button: Short press to turn on the power or turn off the screen display, and long press for 2s to turn off.
• AC/DC Button: Short press to turn on/off.
• LED Light Button: Short press to turn on, then, short press to change the lighting mode, and long press for 2s to turn off.
• Please turn off each output by pressing its power button as it does not turn off automatically or it will drain the battery out.

Four Use Modes of LED Light :

• A. LED light ( 100% bright ) (Click on the Light button )
• B. LED light (50% bright ) ( Click on the Light button
• C. SOS Flashing ( Click on the Light button)
• D. SOS Burst Flashing ( Click on a Light button)
• Long press the Light button for 2s to turn off the LED Light

RECHARGE MODE

Note:
BATTERY LEVEL=100% and the battery is full, stop recharging and the LCD turns off. USB-C1 input and adapter input unplug, No loading in after 2mins, SLEEP MODE on.

CHARGE MODE

SLEEP MODE: ALL OFF

1. If the USB output is lower than 80mA for 12 hours then the power station will enter low loading current status, and then the power station will enter the sleep mode.
2. If there is no loading after 12 hours, the power station will enter sleep mode.

INTERNAL FAN:

• If the battery input/output power in watts exceeds 100W, the inner fan will start to work automatically.
• The fan will turn on when the internal temperature rises up to 45°C (charging mode), and the fan will turn off if the internal temperature is down to 40°C (Discharging mode). The fan noise should be controlled under 60d in 100 cm distance.

RECHARGING (INPUT)

Tips:

• To maximize the battery life, be sure to fully recharge the power station before operating or storing it.
• To shorten the recharge time, it is recommended to disconnect all loads while recharging the product.
• When you charge it with a PD charger through the USB-C1 port, it is recommended to use a power greater than or equal to 60W.

Notes:

• The above recharge times are based on conditions when the PORTABLE POWER STATION is recharged at full speed with no loads connected to it.
• When you recharge your PORTABLE POWER STATION with a compatible solar panel(not included)on bright sunny days free of scattered clouds, please place the power station in the shade to prevent it from overheating.
• DO NOT use a damaged or frayed charging cable to recharge your PORTABLE POWER STATION.
• Make sure the open circuit voltage of the solar panel does not exceed 30V or fall short of 10V.
• The solar recharge time is highly dependent on solar irradiance and ambient temperature.
• For optimal recharging performance, it is highly recommended to recharge your power station with a USB-C PD wall charger (not included)with a high power rating.
• We recommend Apple USB-C Power Adapter: 30W, 61W, 87W or Samsung USB-C Power Adapter 45W.

BUTTON

• Step 1 Short Press the Power button to check the battery level, if the power less than 5%, please recharge the power station before using
• Step 2 Short press the AC button to turn on/off the AC Output
• Step 3 Short press the DC button to turn on/off the cigarette lighter output.
• Step 4 Short press the LED light button to turn on/off the LED light.And short press to change the lighting mode.

Note:

1. USB output interface can automatically wake up by inserting the charging cable
2. If there is no output, please plug the charging cable again.

OPERATION TIME OF SOME COMMON DEVICES

How to calculate operation time

• Battery   Powered Devices: Number of Full Charges=296Wh × 0.90/The Battery Capacity of Device (Wh)
• DC Powered Devices: Working Hours=296Wh × 0.90/The Rated Power of Device (W)
• AC Powered Devices: Working Hours=296Wh × 0.85/The Rated Power of Device (W)

Notes:

• The above calculation formula is only applicable to the case that the product is fully charged, and there is no excessive battery loss.
• Actual times of full charges and working hours might be varied by different charging methods and device operation status.

SPECIFICATIONS

Rated(CN/EU/UK)
MPPT| Support Solar Panel MPPTCharging
---|---
BMS Syetem|

1. Under Voltage Protection
2. 0ver Voltage Protection
3. 0ver Current In Chorge/
4. Discharge Protection
5. Short Circuit in Change/
6. Discharge protection
7. 0ver Temperature in Charge/
8. Discharge Protection
9. 0vercharging Voltage Protection

WHAT’S IN THE BOX

MAINTENANCE

1. To prolong the service life of your PORTABLE POWER STATION, keep it away from harsh sunlight, water, dust, and dirt. Do NOT leave your PORTABLE POWER STATION outside under harsh environments.
2. If possible, keep your PORTABLE POWER STATION connected to a power source when it is not being used and avoid using large loads when the battery level is low.
3. To maintain a healthy battery, please recharge your PORTABLE POWER STATION at least once every two months.
4. If you do not intend to use your PORTABLE POWER STATION frequently, it is strongly recommended to keep its battery level at around 50% and store it in a clean, dry and well-ventilated environment with temperatures around 77 °F(25 °C) and humidity no higher than 75%.
5. Keep your PORTABLE POWER STATION away from corrosives, fire, and heat sources.

TROUBLESHOOTING

1. If your PORTABLE POWER STATION does not operate normally, please refer to the following table for a possible cause and solution.
2. If the following troubleshooting solutions do not work, please contact us for help. Please send an email to the email address for help.

FAQ

Q: Why doesn’t my PORTABLE POWER STATION power other devices?

1. A: First, make sure the output ports have been turned on by pressing the On/Off Buttons of the corresponding Port.
2. Then, check the battery level of the product. Please recharge the product as soon as possible if the battery capacity is low.
3. Finally, check if the connected device conforms to the specifications of the power station output ports.
4. If the product still can’t power your devices, see TROUBLESHOOTING or send an email to.

Q: Can I replace the battery pack in my PORTABLE POWER STATION?

• A: No, the battery pack in PORTABLE POWER STATION is not replaceable. Do NOT try to dismantle your PORTABLE POWER STATION and replace the battery by yourself. Doing so may cause irreversible damage to the product and battery explosion.

Q: Can PORTABLE POWER STATION be interconnected?

• A: No, the PORTABLE POWER STATION can NOT be interconnected with other power stations. If you are looking for a rechargeable AC power supply with a larger capacity, please visit our official website or send an email to us for more options.

Q: Is the PORTABLE POWER STATION waterproof?

• A: No, the PORTABLE POWER STATION is not waterproof. Please keep the product away from moisture. Do no submerge the product in water or operate the product in the rain. Doing so may cause short-circuits, electric shocks, and fire.

Q: Why doesn’t the battery of PORTABLE POWER STATION last as long as I expect?

• A: The battery capacity is rated at 0.2C. When the PORTABLE POWER STATION is powering devices that have high power consumption, the internal resistance of the battery will turn more energy into heat and lower battery capacity as a result. When this is the case, you may not get exactly 296Wh of energy.

Q: Can I charge my electric devices while the PORTABLE POWER STATION is recharging?

• A: Please kindly note that the DC port and AC ports can support pass-through charging.

DISCLAIMER

• Our company cannot be held liable for damages caused by fire, earthquake, used by a third party, other accidents, intentional misconduct on the part of the customer, abuse or other abnormal conditions.
• Do not repair any damage to the AC plug or power supply on your own.
• The warranty covers all terms and conditions of the warranty. Contents that are not specified in the warranty terms and conditions are beyond our responsibility.
• Our company assumes no liability for damages caused by incorrect use or non-compliance with this instruction manual.

Intended use:

• A portable power station is intended as a power supply for electronic devices with a maximum power consumption of 300W.
• Our product is not suitable to be used with equipment that relates to one’s own personal safety and relies heavily on electricity, such as medical devices, equipment for nuclear facilities, the manufacture of air and spacecraft, etc.
• We therefore assume no liability for accidents involving personal safety, fires, or machine failures caused by using our product with the aforementioned devices.
• gmmservice01@outlook.com
• Manufacturer: SHENZHEN GNZ ENERGY CO…, LTD
• Address: Room 2011,20th Floor, Block B, Baoxin Science and Technology Park, No. 9 Guangyuang 5th Road, Tangjia Community,
• Fenghuang Street, Guangming District, Shenzhen, China

Documents / Resources

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