1. Introduction
Thank you for choosing the LOTKEY LPB-02 Portable Guitar Pedal Power Supply. This device is designed to provide stable and isolated power to your guitar effect pedals, featuring a built-in rechargeable battery for portability and a USB port for charging other devices. Please read this manual thoroughly before use to ensure proper operation and to maximize the lifespan of your product.
2. Safety Information
- Do not expose the unit to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the unit to strong impacts.
- Do not attempt to disassemble or modify the unit. This will void the warranty and may cause damage or injury.
- Use only the provided or recommended power adapter and cables for charging.
- Ensure proper polarity when connecting pedals to avoid damage. Most guitar pedals use center-negative polarity.
- Keep out of reach of children.
3. Package Contents
Please check the package for the following items:
- LOTKEY LPB-02 Power Supply Unit
- DC Power Cables (7 pieces)
- USB Charging Cable (Type-C to USB-A)
- User Manual
Image: The LPB-02 power supply unit shown with its dimensions and the included DC power cables and USB charging cable.
4. Product Overview
The LOTKEY LPB-02 features a robust design with multiple isolated outputs and a rechargeable battery for reliable performance.
4.1. Front Panel and Connections
Image: A detailed view of the LOTKEY LPB-02 power supply, highlighting its seven DC output jacks, USB-A output, USB-C charging input, and power switch.
- DC 9V Outputs (1-7): Seven isolated 9V DC outputs for powering guitar pedals. Output 1 provides 300mA, while outputs 2-7 provide 100mA each.
- USB DC 5V Output: A 5V 1A USB-A port for charging mobile devices like smartphones or tablets.
- Type-C Charging Port: Input for charging the internal battery of the power supply.
- Power Switch: Toggles the unit on and off.
- LED Indicators: Blue LEDs indicate active outputs. Red/Green LEDs indicate charging status.
Image: A close-up showing the seven DC 9V output jacks, with output 1 labeled for 300mA and outputs 2-7 for 100mA, demonstrating the isolated power distribution.
4.2. Internal Features
Image: An internal view of the power supply, illustrating the high-quality chip and the aluminum alloy shell designed for efficient heat dissipation and noise reduction.
The LPB-02 incorporates a powerful noise filter and high-quality IC chips within an aluminum alloy casing. This design minimizes noise interference and ensures efficient heat dissipation, contributing to stable and clean power delivery.
Image: A graphic illustrating how the built-in chip filters out voltage fluctuations and noise, providing a stable and pure direct current power supply to connected devices.
5. Setup Instructions
5.1. Initial Charging
Before first use, fully charge the LPB-02 unit. Connect the provided USB Type-C cable to the charging port on the power supply and the other end to a standard USB power adapter (not included). The charging indicator LED will show red while charging and turn green when fully charged.
Image: A close-up of the power supply's side panel, showing the USB-A output, USB-C charging input, power switch, and the red/green LED indicators for charging status and low battery.
A full charge typically takes approximately 6.5 hours and provides over 10 hours of continuous use for your pedals.
5.2. Connecting Pedals
- Ensure the power supply is turned off.
- Identify the power requirements (voltage and current) and polarity of your guitar pedals. Most pedals require 9V DC center-negative.
- Use the provided DC power cables to connect your pedals to the appropriate 9V DC output jacks on the LPB-02.
- Connect pedals requiring up to 300mA to Output 1. Connect pedals requiring up to 100mA to Outputs 2-7.
- Double-check all connections before powering on.
Image: A visual comparison demonstrating the benefits of using the LPB-02's independent direct current power supply (left) over traditional alternating current wall adapters (right), highlighting reduced interference and noise.
6. Operating Instructions
6.1. Powering On/Off
To turn on the power supply, flip the power switch to the 'ON' position. The blue LED indicators above each active output will illuminate. To turn off, flip the power switch to the 'OFF' position.
6.2. Using the USB Charging Port
The USB DC 5V 1A output port can be used to charge compatible USB-powered devices. Simply connect your device's USB charging cable to this port. This function can be used simultaneously with powering your guitar pedals.
7. Charging Instructions
When the battery is low, the charging indicator LED will turn red. Connect the Type-C charging cable to recharge the unit. The LED will turn green once fully charged. It is recommended to fully charge the unit when not in use for extended periods to maintain battery health.
8. Maintenance
- Clean the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store the unit in a cool, dry place away from direct sunlight.
- Regularly check cables for any signs of wear or damage. Replace damaged cables immediately.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to pedals | Unit not charged; Power switch off; Incorrect cable connection; Pedal power requirements exceed output. | Charge the unit; Turn on the power switch; Verify all cable connections and polarity; Ensure pedal current draw is within output limits (300mA for Output 1, 100mA for Outputs 2-7). |
| Humming or noise from pedals | Faulty cable; Pedal issue; Ground loop (less likely with isolated outputs). | Test with different cables; Test pedals individually with a known good power source; Ensure all connections are secure. |
| Unit not charging | Faulty charging cable; Faulty USB adapter; Charging port issue. | Try a different USB-C cable and USB power adapter; Ensure the cable is fully inserted. |
| Short circuit on one output | Damaged pedal; Incorrect cable; Short in pedal circuit. | The LPB-02 features short circuit protection. Disconnect the problematic pedal and cable. The other outputs should continue to function normally. Identify and resolve the issue with the specific pedal/cable before reconnecting. |
10. Specifications
| Feature | Detail |
|---|---|
| Model Number | LPB-02 |
| Item Weight | 1.15 pounds (approx. 0.52 kg) |
| Package Dimensions | 7.2 x 3.98 x 1.93 inches (approx. 18.3 x 10.1 x 4.9 cm) |
| DC Output 1 | 9V, 300mA |
| DC Outputs 2-7 | 9V, 100mA each |
| USB Output | 5V, 1A |
| Input Voltage (Charging) | 5V via USB-C |
| Battery Type | Built-in 3.7V/10000mAh rechargeable lithium battery |
| Full Charge Time | Approx. 6.5 hours |
| Battery Life | Over 10 hours (depending on load) |
| Special Feature | Short Circuit Protection, Overcurrent Protection, Noise Filter, Heat Dissipation |
| Brand | LOTKEY |
11. Warranty and Support
LOTKEY products are designed for reliability and performance. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or visit the official LOTKEY website for contact information. Please retain your proof of purchase for warranty service.