Jackery JE-300B Explorer 300 Portable Power Station User Guide


Jackery JE-300B Explorer 300 Portable Power Station User Guide


Important Safety Instruction

  1. Please read all instructions before using this product.
  2. Close supervision is required when using this product near children to reduce the risk.
  3. Risk of electric shock may occur if using accessories recommended or sold by non-professional product manufacturers.
  4. When the product is not in use, please unplug the power plug from the product’s socket.
  5. Do not dismantle the product, which may lead to unpredictable risks such as fire, explosion or electric shock.
  6. Do not use the product through damaged cords or plugs, or damaged output cables, which may cause electric shock.
  7. Charge the product in a well ventilated area and do not restrict ventilation in any way.
  8. Please put the product in a ventilated and dry place to avoid rain and water to cause electric shock.
  9. Do not expose the product to fire or high temperature (under direct sunlight or in vehicle under high heat), which may cause accidents such as fire and explosion.
  10. Solar charge times depend on weather conditions, place your solar panel where it will get as much direct sunlight as possible.




Product Appearance




  1. Input Power
  2. Remaining Charge Time
  3. Solar Charging Indicator
  4. AC Wall Charging Indicator
  5. Car Charging Indicator
  6. Low Battery Indicator
  7. Remaining Battery Percentage
  8. Error Code
  9. High Temperature Warning
  10. Low Temperature Warning
  11. Remaining Discharge
  12. Time Output Power
  13. Energy Saving Mode
  14. AC Power Indicator
  15. Battery Power Indicator
  16. WIFI
  17. Bluetooth
  18. EPS

Emergency Power System.

Once you have connected the mains and the AC input port of the EPS via the AC charger cable, you can use the AC output port of the EPS to power your unit (at this point the AC power comes from the mains, not the EPS battery). In the event of a sudden loss of mains power, the EPS can automatically switch to battery mode within 20 ms. Since this is a non-professional UPS function, it does not support 0ms switching. Do not connect to equipment with high uninterruptible power requirements such as data servers and workstations. Please test several times to confirm compatibility before use and it is recommended to connect to only one device. Do not use more than one unit at a time to avoid triggering the overload protection. Failure to follow these instructions may result in equipment failure or loss of data for which we cannot be held responsible.


Output On/Off

  • Main power on/off: Press the “Main Power Button” and the working indicator lights up and the LCD display is illuminated. When this product does not have any operation for 2 minutes, the product will enter the hibernation state and the display will turn off automatically. If you need to turn off the main power, please press and hold the “Main Power Button” until the working indicator turns off. The default standby time of this product is 2 hours. If the other power output switch is not turned on, or the product does not have any charging input, the product will automatically shut down after 2 hours. The automatic shutdown time can be set on the Jackery App.
  • AC Output On/Off: Ensure that the main power supply is turned on. Press the AC Button, the AC Output operation indicator lights up. Then you can connect the equipment that needs AC charging. Press the AC Button again to turn off the AC Output.
  • USB/Car Port Output On/Off: Ensure that the main power supply is turned on. Press the DC Button, the DC Output operation indicator lights up. Then USB/Car Port Output Ports can be connected to external load devices. Press the DC Button again to turn off the USB/ Car Port Output

LCD Screen On/Off
To turn on, press the Main Power Button or when there’s a charging input, the screen display will light up automatically. To turn off, press the Main Power Button again and the screen display will turn off. Or, if there is no operation in 2 minutes, the product will enter a sleep state and the screen display will automatically turn off.
To get the screen always-on (under charging or discharging state), follow these steps:

  • After the display screen lights up, double-click the Main Power Button and the mode of Always-On Display will be on.
  • To turn off Always-On Display, follow these steps: Press the Main Power Button and the screen will be turned off in 2 minutes.
  •  During Always-On mode, the screen automatically turns off after 2 hours without charging or discharging.
  • AC Input Reset Button: When the Reset Button pops up, you need to remove AC charge cable and press the Reset Button to reset.

LED Light On/Off

  • There are three modes of LED Light: Light mode, and SOS mode.
  • The operations are as follows: Press the LED Light Button, the LED will be turned on. The light will always turn on in Low Light mode and the output power on the screen is 1W. Press again to enter the SOS mode and the output power on the screen is 1W. Then, press again to turn off the LED Light. In any of these modes, the light can be turned off by a long press.


This product supports the connection of Jackery App for intelligent control and operation. Users can download the Jackery App through App Store or Google Play. Please refer to the User Manual for Jackery App for detailed connection instructions.


  • Green energy first: We advocate to use the green energy first. This product supports two modes of charging at the same time: solar charging and AC wall charging.
  • When AC wall charging and solar charging are turned on at the same time, the product will give priority to solar charging and both methods will be used to charge the battery at the maximum permissible power.

Charging from the wall

Please use the AC cable included in the package.


Solar energy charging

The Solar Generator 300 Plus is different from other Jackery Solar Generator. For the first time, it adopts USB-C input as the solar charging input. You can refer to the following connection scheme to charge your Explorer 300 Plus.


Jackery New SolarSaga 40 Mini or 80 Solar Panel Connection Guide
The new Solar Saga 40 Mini is compatible with different models of portable power stations and contains two ports:

  •  DC8020 port is suitable for Jackery Pro series and Plus series (excluding Explorer 300 Plus ).


  • DC8020-DC7909 port applies to Jackery Explorer 160/240/300/500/1000.


Charging in the Car

This product can be charged with a 12V car charger. Please start the vehicle before charging to prevent draining the car battery and prevent your vehicle from being unable to start. Meanwhile, please ensure that the car charger
and the car cigarette lighter provide a good connection, and ensure that the car charger is fully inserted. In addition, if the vehicle is running on bumpy roads, it is forbidden to use the car charger in case it burns due to a poor connection. The Company will not be responsible for any loss caused by non-standard operation.



  • Product Name: Jackery Explorer 300 Plus
  • Model No: JE-300B
  • Capacity: Lithium-ion 22.5 Ah / 12.8 V DC(288 Wh)
  • Weight: Around 8.27 Ibs / 3.75 kg
  • Dimensions: 9.1 x 6.1 x 6.6 in / 23 x 15.5 x 16.7 cm
  • Cycle Life: 3000 cycles to 80%+ capacity
  • Total Output: 300 W
  • AC Output: 120V~60Hz, 2.5A, 300 W Rated, 600 W Surge peak
  • USB-A Output: 15W Max 5V⎓3A
  • USB-C (OUT): 15W Max 5V⎓3A
  • USB-C (IN/OUT): 100W Max 5V⎓3A, 9V⎓3A, 12V⎓3A, 15V⎓3A, 20V⎓5A
  • USB Total Output:  USB-C(IN/OUT) : 100W Max, USB-C(OUT)+USB-A : 24W Max
  • Car Port: 12V⎓10A
  • Charge mode AC Input: 100V-120V~60Hz, 10A Max
  • Bypass mode AC Input/Output: 100V-120V~60Hz, 300 W Max
  • DC Input(USB-C): 12-27 V⎓5A Max, 100W Max
  • Charge Temperature: 0~45°C (32~113℉)
  • Discharge Temperature: -10~45°C (14~113℉)



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