300W Pure Sine Wave Inverter — 24VDC To 110/120VAC (60Hz)

 

 

Pure Sine Wave Power Inverter：WZRELB SE-300W is the ultimate travel-sized pure sine wave inverter, purpose-built for charging personal electronics on the go, with >90% conversion efficiency. It provides 300W continuous output (600W peak surge power), converting 24VDC to standard 110V/120VAC at 60Hz, fully matching the electrical standard used in North America (USA, Canada, Mexico), Japan, and parts of Central and South America. The all-aluminum shell doubles as a passive heat sink while protecting internals from bumps and drops, perfect for heavy-duty trucks, large RVs, marine craft, medium solar arrays, and dual-battery commercial vehicle setups.

 

This model outputs standard 110V/120VAC at 60Hz, 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. If you require Japanese 100VAC output, please contact us to confirm availability for your specific model.

 

The 24VDC input version is optimized for medium-duty applications, running two 12V batteries in series or a native 24V lithium pack, cutting DC amperage in half compared to 12V systems. This means thinner cables, less voltage drop, cooler connections, and longer cable runs, making it ideal for larger RVs, heavy-duty trucks, marine installations, and mid-sized solar arrays. It features universal compatibility with 24V battery banks including series-connected 12V lead-acid batteries and 24V lithium batteries.

 

Its true pure sine wave output eliminates the buzzing, flickering, and overheating risks that cheap modified sine wave inverters cause, delivering clean, grid-quality AC power that is completely safe for all microprocessor-based devices. It reliably powers a wide range of low-wattage electronics including laptops (≤65W), smartphones, tablets, electric shavers, portable speakers, LED lighting, camera chargers, and Nintendo Switch.

 

 

 

1. Ensure the total load of connected devices does not exceed 300W continuous power to avoid overload damage to the inverter.

2. Most car cigarette lighter sockets are fused at 150W. To use the full 300W output, connect the inverter directly to the battery using the provided standard cables.

3. Do not touch the aluminum housing during extended high-load operation, as the surface may become hot due to heat generation.

4. Cable Note (24VDC): With half the amperage of 12V systems, the 24V version allows for more practical cable sizing and longer cable runs from the battery bank to the inverter, with a maximum DC current of ~14.7A at full load.

Combining ultra-portability, high conversion efficiency, and comprehensive safety features, this pure sine wave inverter delivers top-tier power solutions for personal electronics, mobile charging needs, and low-wattage appliance use in travel, commercial vehicles, and off-grid scenarios

 

The SE-300W is packed with advanced features designed for maximum performance and safety: Core Functions: - 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 System: Built-in safeguards automatically protect your devices and battery bank in all abnormal operating conditions. Full Protection Suite: Protection Type Description Low Voltage Protection Features a low-voltage alarm and automatic shutdown to protect your 24V battery bank from deep discharge Over Voltage Protection Shuts down when 24V DC input voltage exceeds the maximum safe threshold Overload Protection Automatically disconnects when the connected load exceeds 300W continuous power Short Circuit Protection Instantly shuts down to prevent catastrophic damage if a short circuit is detected Over Temperature Protection Shuts down automatically if internal temperature exceeds the safe operating range Reverse Polarity Protection Built-in safeguards protect the inverter if battery cables are connected incorrectly

 

 

 

Designed for life on the move, the SE-300W features an ultra-compact and lightweight body that fits neatly into a glovebox, center console, laptop bag, or camping pouch. Its space-saving form factor and all-aluminum shell ensure exceptional portability and easy storage, while providing reliable passive heat dissipation and impact resistance, integrating seamlessly into any mobile scenario-whether for:

Heavy-duty truck travel and commercial vehicle on-board power

Large RV trips and marine craft mobile power supply

Medium solar arrays and dual-battery off-grid setups

Emergency preparedness and outdoor camping adventures

The inverter reliably powers a wide range of low-wattage devices including:
✓ Digital devices: Laptops (≤65W), Smartphones, Tablets, Camera Chargers, Drone Chargers, Nintendo Switch
✓ Personal care: Electric Shavers, Portable Beauty Devices
✓ Entertainment & lighting: Portable Speakers, LED Lighting, Mini Portable Projectors
✓ Small daily appliances: Mini USB Fridges, Portable Air Purifiers

With its perfect balance of 24V system optimization and ultra-portability, this inverter serves as an essential on-the-go power companion for all your mobile charging and low-wattage power needs.

 

 

Technical Specifications
Model		SE-300W
Input	DC Voltage	24VDC
	Max DC Current at Full Load	~14.7A
	Efficiency	> 90%
	Battery Compatibility	24V Lead-Acid / 24V Lithium Battery
Output	AC Voltage	110V/120VAC
	Continuous Power	300W
	Surge Power	600W
	Frequency	60Hz
	Waveform	Pure Sine Wave
	THD (Total Harmonic Distortion)	<3%–5%
	AC Voltage Regulation	±3%
	Outlet Type	Standard US-style Type A/B (NEMA 5-15) AC outlets
Environment	Working Temperature	-10℃ TO 50℃
	Working Humidity	20% ~ 90% RH non-condensing
Others	Cooling Ways	Intelligent Temperature-Controlled Fan
	Housing Material	Aluminum Alloy
	Protection	Low Voltage / Over Voltage / Overload / Short Circuit / Over Temperature / Reverse Polarity
	Warranty	12 Months (for non-artificial damage)

 

 

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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