Berger XT 300 W User Manual

The Berger XT 300 W is a high-performance 300-watt power inverter designed for automotive and off-grid applications, featuring pure sine wave output, multiple AC outlets, USB charging ports, overload protection, low voltage alarm, and cooling fan. Operates on 12V DC input, producing 120V AC, 60Hz output. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Modes 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Pure sine wave inverter, DC input terminals, AC outlets, USB ports, LCD display, cooling fan, overload protection circuit.

Feature	Description
Pure Sine Wave Output	Clean power suitable for sensitive electronics
AC Output	Two 120V AC outlets (300W continuous)
USB Charging Ports	Two USB ports (5V/2.4A each)
LCD Display	Shows input voltage, output wattage, and warnings
Overload Protection	Automatic shutdown when exceeding 300W
Low Voltage Alarm	Audible alert when input voltage drops below 10.5V
Cooling Fan	Thermally controlled for efficient heat dissipation
DC Input Terminals	For connecting to 12V battery
Power Switch	Main power control
Remote Control Port	Optional remote switch connection

Installation

Unpack and inspect contents. Ensure proper ventilation.

Connect to battery: Attach red cable to positive (+) terminal, black to negative (-).
Secure connections: Tighten all terminals to prevent arcing.
Mount inverter: Use provided screws to mount in dry, ventilated location.
Connect ground: Attach ground wire to vehicle chassis or ground point.

WARNING! Ensure battery is disconnected during installation. Use appropriate gauge cables (minimum 8 AWG).

First-Time Setup

Power on inverter; check LCD display.

Verify input voltage: Display should show 11-14V DC.
Test outlets: Plug in low-wattage device (under 50W) to verify operation.
Set alarm thresholds: Use menu to adjust low voltage cutoff (default 10.5V).
Configure fan mode: Select AUTO (default) or MANUAL cooling.

CAUTION! Do not exceed 300W total load. Ensure proper ventilation around unit.

Specifications

Power Rating: 300W continuous, 600W surge.
Input Voltage: 12V DC (10.5-15V range).
Output Voltage: 120V AC ±5%.
Frequency: 60Hz ±0.5%.
Waveform: Pure sine wave (<3% THD).
Efficiency: >90% at full load.
USB Output: 5V DC, 2.4A per port.
Protections: Overload, short circuit, over temperature, low voltage.
Operating Temp: -20°C to 50°C.
Dimensions: 8.5" x 5.5" x 2.5".

Controls and Settings

Access settings via front panel buttons. Front Panel: POWER, MODE, SET, UP/DOWN arrows.

LCD Display: Shows input voltage, output power, temperature, warning icons.

Settings Menu: Low voltage cutoff (10.5-11.5V), fan mode (AUTO/MANUAL), brightness, alarm volume, load calculation. Protection Settings: Overload threshold (300W adjustable), temperature cutoff, restart delay. Display: Backlight timeout, voltage display format, power saving mode.

Connecting Devices

AC devices: Plug into outlets. USB devices: Connect to USB ports.

Calculate total wattage: Ensure sum of connected devices ≤ 300W.
Connect sensitive electronics first: Computers, medical devices.
Connect motorized devices last: Refrigerators, power tools.
Monitor display: Watch for overload warnings.

Tip: Start with lowest power device first to test system stability.

Operation Modes

Supports continuous, standby, and eco modes.

Normal mode: Full power output, fan runs as needed.
Eco mode: Automatically reduces power when load < 10W.
Standby: Maintains connection with minimal power draw.
Remote operation: Use optional remote switch for on/off control.
Parallel operation: Can be connected with second unit for 600W output.
Battery charging: Can pass through to charge connected devices.
Load calculation: Press CALC button to estimate runtime.
Temperature monitoring: Display shows internal temperature.

WARNING! Do not operate in enclosed spaces. Keep away from flammable materials.

Safety Features

Overload Protection: Automatic shutdown when exceeding 300W. Low Voltage Cutoff: Protects battery from deep discharge. Temperature Control: Fan activates at 40°C. Short Circuit Protection: Immediate shutdown on detected short.

Care & Maintenance

Disconnect from battery before cleaning. Use compressed air to remove dust from vents.

CAUTION! Do not use liquids for cleaning. Check connections monthly for corrosion.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. UL 458 certified for marine and vehicle use. Copyright © 2025 Berger Power Systems; trademarks of Berger Industrial GmbH. For support, visit www.bergerpower.com or contact 1-800-555-3000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power output	Battery/low voltage	Check battery connections; ensure voltage > 10.5V.
Overload shutdown	Exceeded 300W limit	Disconnect devices; restart; reduce total load.
Fan not running	Temperature/obstruction	Ensure vents clear; fan activates at 40°C.
Low voltage alarm	Battery discharge	Recharge battery; check alternator output.
USB ports not working	Overcurrent protection	Disconnect devices; wait 30 seconds; reconnect.

Reset: Hold POWER + MODE for 5 seconds to factory reset.

Service: 1-800-555-3000; www.bergerpower.com/support