300W Pure Sine Wave Inverter — 48VDC To 110V/120VAC (50Hz)

 

 

The WZRELB SE-300W is the ultimate travel-sized pure sine wave inverter, purpose-built for charging your personal electronics on the go. Whether you are a business traveler who needs to keep a laptop charged during long drives or a weekend road-tripper powering your phone, drone, and portable speaker, the SE-300W outputs clean, grid-quality AC power from your battery. Its true pure sine wave output eliminates the buzzing, flickering, and overheating risks that cheap modified sine wave inverters cause.

 

Output Voltage: 110V/120VAC (60Hz)

This model outputs standard 110V/120VAC at 60Hz-the electrical standard used in North America (USA, Canada, Mexico), Japan, and parts of Central and South America. It is compatible with all standard North American appliances, power tools, and electronics that use Type A/B (NEMA 5-15) plug outlets. Whether you are running appliances in an American RV, powering a US-spec construction tool, or providing backup power for your home in the Americas, this output configuration matches your needs perfectly.

 

Input Voltage: 48VDC

The 48VDC input version is the industry standard for professional off-grid solar installations, telecom tower backup, and large-scale energy storage systems. Running at 48V dramatically reduces the DC current to just one-quarter of a 12V system, enabling the use of practical cable sizes, longer cable runs, and safer connections. This is the recommended input voltage for continuous heavy-duty operation of 2000W+ inverters.

Battery Type: 48V Battery Bank or 48V Lithium (e.g., LiFePO4 Server Rack Batteries)

Ideal For: Professional Solar Installations · Telecom Backup · Off-Grid Homes · Server Rack Battery Systems · Large Energy Storage · Commercial Backup Power

 

What Can 300W Power?

Laptops (≤65W) · Smartphones · Tablets · Electric Shavers · Portable Speakers · LED Lighting · Camera Chargers · Nintendo Switch

 

 

 

• True Pure Sine Wave Output: Delivers a stable 300W continuous / 600W peak true sine wave AC output with premium pure copper inductance-safe for all microprocessor-based devices.
• Intuitive LED Display: A digital LED readout lets you monitor input voltage in real time so you always know your battery's condition.
• Ultra-Quiet Smart Fan: The temperature-controlled cooling fan only activates when the internal temperature rises, keeping things silent during light loads.
• Comprehensive Protection: Built-in safeguards against low voltage, over-voltage, overload, short circuit, and over-temperature automatically protect your devices and battery.

 

 

The SE-300W is designed for life on the move. Its ultra-compact and lightweight body fits neatly into a glovebox, center console, laptop bag, or camping pouch. The all-aluminum shell doubles as a passive heat sink while protecting internals from bumps and drops.

 

 

1. Ensure the total load of connected devices does not exceed 300W continuous.
2. Most car cigarette lighter sockets are fused at 150W. To use the full 300W, connect directly to the battery using the provided cables.
3. Do not touch the aluminum housing during extended high-load operation-it may become hot.

Cable Note (48VDC): 48V is the recommended input voltage for high-power inverters (2000W+). The greatly reduced amperage means safer wiring, lower cable costs, and minimal voltage drop even over longer distances.

Output Note: If you require Japanese 100VAC output, please contact us to confirm availability for your specific model.

Approximate Max DC Current at Full Load: ~7.4A (at 48VDC input)

 

 

Model	SE-300W
Continuous Power	300W
Peak/Surge Power	600W
Input Voltage	48VDC
Output Voltage	110V/120VAC
Output Frequency	60Hz
Waveform	Pure Sine Wave
THD	<3%–5%
Efficiency	>90%
AC Voltage Regulation	±3%
Outlet Type	Standard US-style Type A/B (NEMA 5-15) AC outlets
Housing Material	Aluminum Alloy
Cooling	Intelligent Temperature-Controlled Fan
Protection	Low Voltage / Over Voltage / Overload / Short Circuit / Over Temperature / Reverse Polarity
Warranty	12 Months

 

 

Q: Can I add a fuse or circuit breaker between the inverter and battery?

A: Yes, and we strongly recommend it. Calculate: Continuous Power ÷ Lowest Input Voltage = Minimum Fuse Rating.

 

Q: Why do sparks appear when connecting the battery cables?

A: This is normal. The inverter has internal capacitors that draw a brief charge current upon first connection. It does not indicate a malfunction.

 

Q: Why does the output voltage drop or the inverter shut down under load?

A: Check: (1) Fuse/breaker is not undersized, (2) All included cables are connected, (3) Battery capacity is sufficient, (4) Cable gauge is appropriate for the current draw.

 

Q: Why can't my inverter start the refrigerator?

A: Refrigerator compressors are inductive loads with startup surges 6–10× their running wattage. We recommend choosing an inverter with continuous power at least 3–7× the fridge's rated wattage.

 

Q: Is the output single-phase or split-phase?

A: All SE Series inverters are single-phase output only.

 

Q: How do I choose between 12V, 24V, 48V, or higher input voltage?

A: Higher input voltages draw less current, allowing thinner cables and longer cable runs. For inverters ≥2000W, we recommend 24V or 48V input. For industrial applications, 96V or 110V input is ideal.

 

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