USER GUIDE
EB3840 EXPANSION BATTERY
Brand: iTECHWORLD
Tagline: THE POWER EXPERT
Contents
1. Product Overview
This section provides an overview of the EB3840 Expansion Battery.
Device Description: The EB3840 is an expansion battery designed to complement power station systems.
Key Ports and Controls:
- 1. MAIN POWER/USB CONTROL: The master power button for turning the unit on/off and controlling USB ports.
- 2. XT-60 INPUT PORT: Input port for solar or car charging.
- 3. PARALLEL PORT: Used for connecting multiple EB3840 units or connecting to a PS3600 PRO for capacity expansion.
- 4. LCD DISPLAY: Shows remaining power, usage data, and status indicators.
- 5. USB OUTPUTS: Ports for charging USB devices.
Included Accessories:
- XT60 to 50A Anderson adapter
- Parallel Cable
- Car Charger
- User Manual
- Cable Storage Bag
3. LCD Features
The EB3840 features an informative LCD display that provides key operational data.
Display Indicators:
- 1. REMAINING DISCHARGE TIME: Indicates the estimated time the battery can power devices.
- 2. EXPANSION BATTERY STATUS: Shows the operational status of the EB3840.
- 3. PARALLEL OPERATION STATUS: Indicates if the unit is operating in parallel mode (e.g., "S1", "S2").
- 4. TOTAL INPUT POWER: Displays the current power being received by the unit.
- 5. TOTAL OUTPUT POWER: Displays the current power being supplied by the unit.
- 6. XT60 INPUT STATUS: Shows the status of the XT60 input port.
- 7. BATTERY LEVEL INDICATOR: Visual representation of the battery's charge level (e.g., percentage).
- 8. USB OUTPUT STATUS: Indicates if the USB output ports are active.
- 9. USB-C OUTPUT STATUS: Indicates if the USB-C output port is active.
4. Fault Resolution
This table outlines common statuses, their explanations, and recommended resolutions.
| Status | Explanation | Resolution |
|---|---|---|
[Output Exceeds Standard/Short Circuit Icon] Icon flashes and buzzes | The output exceeds the standard and it's short-circuited. | 1. Remove the output device. 2. Press the power/USB button briefly to deactivate the alarm. |
[Temperature Warning Icon] The temperature warning icon flashes and buzzes | This product has surpassed the recommended temperature limit. | Remove all loads, disconnect the power source, and allow the unit to cool down to an appropriate temperature (between -10°C to 40°C) before proceeding. |
[Charging Unavailable Icon] S1 S2 | Parallel connection failure; there is a disruption between the EB3840 and PS3600 PRO. | 1. Disconnect the parallel connection. 2. Charge the unit with low battery capacity or discharge the unit with high battery capacity until the battery level drops below 80%. |
5. PS3600 PRO Connection
The EB3840 can be connected in parallel with the iTechworld PS3600 PRO power station to expand capacity.
Connection Capacity: You can connect a maximum of two (2) EB3840 units to a PS3600 PRO (sold separately) for a total capacity of up to 11,520Wh, using parallel cables.
Procedure:
- Ensure both the PS3600 PRO and EB3840 units are powered OFF before making any connections.
- Once connected, the screen will display "S1" and "S2" to indicate parallel operation.
- After successful parallel connection, the EB3840 can begin charging or discharging.
- Note that the EB3840 may charge at a slower rate when nearly full and discharge faster when in high demand.
- If there is no external charge, the unit with a higher charge state will charge the unit with a lower charge state. The display will show the current power status.
Important Safety Note:
- Never connect or disconnect the parallel cable while the products are operational.
- Only connect or disconnect the cable when the products are powered OFF to prevent electrical hazards or malfunctions.
WARNING: Do not connect or disconnect the EB3840 to a PS3600 PRO whilst switched ON.
6. Solar Panel Charging
The EB3840 can be charged using compatible solar panels.
Charging Guidelines:
- Do not charge the EB3840 via a solar panel that has a voltage exceeding 50V.
- The unit supports a maximum solar input of 200W. Charging time depends on the solar panel's input wattage. (Solar panels are not included).
- For optimal operation, ensure there is no regulator in the solar charging line. The EB3840 contains a built-in regulator, so unregulated solar power should be input directly.
Connecting Patterns:
Connecting Pattern 1:
Description: A single solar panel is connected to the EB3840 via an XT60 port using a 50A Anderson to XT60 adapter.
Connecting Pattern 2:
Description: Multiple solar panels (e.g., two) are connected in series or parallel to the EB3840 via an XT60 port using a 50A Anderson to XT60 adapter.
7. Car/Vehicle Charging
The EB3840 can be charged from a vehicle's power outlet.
Procedure:
- Use the provided car charger cable for vehicle charging.
- Car chargers typically offer lower power outputs (around 90-120 watts), which may result in extended charging times.
- For a quicker charge, it is recommended to connect the EB3840 in parallel to a PS3600 PRO that is connected to a power source. This method can charge the unit from 0-100% in approximately 3 hours.
Diagram Description: The EB3840 is shown connected to a vehicle's power outlet via an XT60 port using a car charging cable.
8. General Specifications
| Model name | EB3840 |
|---|---|
| Dimensions | 550*321*464mm |
| Weight | 36.5Kg |
| Capacity | 3840Wh |
| Max parallel capacity | 11520Wh |
| XT60 input | 11.5-50V, 200W max |
| USB QC3.0 | 18W |
| USB-C | 100W |
| Car charging output | 12V/10A |
| Power Off current | <500uA |
| Operating temperature | -10~40°C |
| Environment humidity | ≤90%RH |
| Cycle life | >3500 times |
9. Battery Specifications
| Battery type | LiFePO4 |
|---|---|
| Single cell rated voltage | 3.2V |
| Single cell rated capacity | 20Ah |
| Battery pack rated voltage | 48V |
| Battery pack output voltage | 40V~54V |
| Battery pack rated capacity | 3840Wh |
10. Safety Precautions
For safe operation and optimal performance, the EB3840 Expansion Battery must be operated correctly. Please carefully read, understand, and follow all instructions and guidelines in this user guide. Failure to follow these instructions may result in damage to the unit, property, death, or serious injury.
Disclaimer: While iTechworld has taken every precaution to ensure the accuracy of the contents of this user guide, iTechworld assumes no responsibility for any errors or omissions.
Furthermore, all specifications and functionality may change at any time without notice. It is best to view the iTechworld website for the most up-to-date information.
WARNING: People with physical disabilities, visual, sensory, or mental impairments (including children) should not use this device. Children should be supervised to ensure they do not play with the expansion battery.
DANGER: Do not disassemble or modify the expansion battery. Doing so will void your warranty and may result in electrical shock, fire, death, or serious injury.
EXPLOSION HAZARD: Do not use the expansion battery in an environment where flammable fumes or gases are present (such as near gas bottles, petrol engines, or lead-acid battery compartments).
WARNING: Avoid using the expansion battery in extreme temperatures, high humidity, direct sunlight, and near fire.
WARNING: Please use the wires recommended in this user guide; otherwise, it may result in damage to the expansion battery, a risk of electrical shock, fire, death, or serious injury.
WARNING: Do not drop the expansion battery.
WARNING: When not using the expansion battery, turn off the power and unplug the power cord.
WARNING: Do not use the expansion battery and its accessories to connect equipment if there is a defect.
DANGER: Never smoke or allow a spark or flame in the vicinity of the expansion battery. This may cause the battery to explode.
LIMITATIONS OF USE: Do not use in connection with life support systems or other medical equipment or devices.
LONG TERM STORAGE: For long-term storage, discharge the power from full to empty once every three months, and then recharge it to 75%. Ensure the power is turned off completely.
11. Contact Us
Customer Support:
- Phone: 1300 483 249
- Email: service@itechworld.com.au
- Website: www.itechworld.com.au
About iTechworld:
When it comes to energy storage and creation, iTechworld is a leading name in the industry. Based in Australia, it is a family-owned and operated business committed to providing innovative products and excellent benefits to customers Australia-wide.
Whether for camping, 4WD adventures, or general use, iTechworld offers solutions to meet power needs, allowing users to escape the grid with comfort and convenience.
iTechworld. The Power Expert.
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