SP300W Pure Sine Wave Power Inverter

Name: SP300W
Availability: InStock

Compact DC-to-AC power for laptops, phones, cameras, CPAP machines and small electronics in cars, boats and camping setups.

✓ 300W Continuous

✓ 600W Peak

✓ CE

✓ Pure Sine Wave

✓ OEM Available

✓ RoHS

Continuous Power

300W

Peak / Surge

600W

Input (DC)

12/24/48V(alternative)

Output (AC)

100-120/200-240V(alternative)

Waveform

Pure Sine

Efficiency

90% (full load), 95% (1/3 load)

TRUSTED BY MANUFACTURERS, INSTALLERS AND DISTRIBUTORS WORLDWIDE

RV Manufacturers

Marine Builders

Solar Installers

Telecom Operators

Truck Fleets

Off‑grid Communities

Emergency Services

Export Distributors

PROBLEM & SOLUTION

What Problems Does It Solve?

Dead Devices on the Road

Keep laptops, phones and tablets charged on long drives without searching for a wall outlet.

CPAP Power While Camping

Run a CPAP machine overnight from a 12V battery with clean power that will not damage the motor.

Clean Power for Sensitive Electronics

Protect cameras, drones and audio gear from the distortion that cheap modified-sine inverters produce.

INDUSTRY APPLICATIONS

Where the SP300W Goes to Work

From weekend camping to industrial telecom backup, the SP300W converts battery power into reliable AC electricity across the applications that matter most.

Car & Road Trip

Power laptops and tablets on long drives without idling the engine.

Camping

Run LED lighting, phone chargers and a small fan off a portable battery.

Boat & Marine

Keep navigation electronics and radios alive on small craft.

CPAP & Medical

Run a CPAP machine overnight from a 12V battery with clean sine output.

WHY CHOOSE SP300W?

Built for the People Who Depend on It

The SP300W is not just a spec sheet. It is engineered to solve real power problems in the field — clean output, reliable conversion, and the configurability that professional buyers need.

Clean Power

THD < 3% output protects sensitive laptops, phones and medical devices from distortion.

Compact Size

Palm-sized aluminum body fits in a glovebox, door pocket or backpack without notice.

Silent Operation

Smart fan only spins under load, so overnight CPAP use stays whisper-quiet.

OEM Support

Custom logo, socket, voltage and packaging for distributors and gift-channel buyers.

FEATURE HIGHLIGHTS

Every Detail Engineered On Purpose

Eight features that define why the SP300W performs in the field, not just on paper.

Pure Sine Wave

Brief startup surge for devices like mini fridges and small pumps.

300W Continuous

Steady 300W output with 600W surge handles startup spikes from small motors.

600W Peak Surge

Brief startup surge for devices like mini fridges and small pumps.

Dual AC Outlet

Two standard AC sockets plus USB for charging phones and tablets.

USB Charging

Built-in 5V / 2A USB port charges phones and tablets directly.

Smart Cooling Fan

Fan activates only when needed, keeping overnight use silent.

Full Safety Protection

Overload, over-temp, short-circuit, low and high voltage shutdown.

Aluminum Housing

Lightweight aviation-grade alloy dissipates heat and survives travel.

WHY PURE SINE WAVE ?

The Waveform Decides Whether Your Devices Survive

Utility grid power is a pure sine wave. Modified sine wave inverters produce a rough, blocky approximation. That difference is not academic — it determines whether your laptop runs cool, your fridge compressor lasts, and your CPAP motor stays quiet.

Pure Sine Wave

Modified Sine Wave

Pure Sine Wave

Recommended

Modified Sine Wave

Not recommended

WHAT CAN IT POWER ?

The SP300W Runs These Devices

A quick reference grid of common devices the 300W inverter handles. Items marked green run comfortably within the continuous rating.

Smartphone

30W

Laptop

65W

Tablet

30W

LED Light

15W

CPAP (no heater)

80W

Camera Charger

25W

Small Fan

45W

Portable Fridge

120W

Drone Battery

60W

Router / Modem

20W

Game Console

150W

Mini Speaker

40W

Running wattage shown. Inductive loads (motors, compressors) draw 2–4x running power for a few seconds at startup — the SP300W’s 600W peak handles these surges.

POWER CONSUMPTION REFERENCE

Will It Run Your Device?

A practical reference table showing typical device wattage and whether the SP300W can handle it. Use this as a quick sizing check before you buy.

DEVICE	TYPICAL POWER	SUITABLE FOR SP300W
Smartphone charger	10W	✓ Yes
Laptop (13")	65W	✓ Yes
CPAP (no heater)	80W	✓ Yes
LED strip light	15W	✓ Yes
Small fan	45W	✓ Yes
Mini fridge (startup)	300W surge	✓ Yes
Coffee maker	800W	× No
Microwave	1200W	× No

Values are typical estimates. Always check your device’s nameplate wattage. For devices with motors or compressors, account for 2–4x startup surge.

BUYING GUIDE

How to Choose the Right Inverter

Not sure whether you need 300W or a different size? Follow this 4-step guide — and if the SP300W is not the right fit, we link you to the model that is.

List your devices

Write down every device you want to run simultaneously. Check the nameplate wattage on each.

Add them up

Sum the running watts. Add 2–4x for any device with a motor or compressor (fridge, pump, AC).

Pick the next size up

Choose an inverter whose continuous rating exceeds your total. The SP300W is right for loads up to 300W.

Check your battery

Ensure your battery bank can deliver the current. At 300W, a 12V system draws ~25A; 24V halves it; 48V quarters it.

Explore the Full SP Series

If the Inverter is not the perfect fit, compare it with the rest of the ZentroVolt pure sine wave lineup — from 300W to 6000W.

TECHNICAL SPECIFICATIONS

SP300W Full Spec Sheet

From weekend camping to industrial telecom backup, the SP300W converts battery power into reliable AC electricity across the applications that matter most.

Rated Power

Output Waveform

Output Voltage (AC)

Efficiency

AC Outlets

Protection

Housing

Storage Temp

Net Weight

300W continuous

Pure Sine Wave (THD < 3%)

110V / 120V / 220V / 230V / 240V

90% (full load), 95% (1/3 load)

2 x AC + USB

Overload, over-temp, short-circuit, low-voltage, high-voltage

All-aluminum housing

-30°C to +70°C

0.73 kg

Surge Power

Input Voltage (DC)

Output Frequency

No-load Current

USB Port

Cooling

Operating Temp

Dimensions

Certifications

600W peak (surge)

12V/24V/48V DC (Battery)

50Hz / 60Hz

< 1.2A

5V / 2A USB

Smart fan

-10°C to +50°C

175x103x60mm

CE-EMC/LVD, ROHS, UKCA, FCC

Why 12V / 24V / 48V input options matter

Battery banks come in different voltages. 12V suits small vehicle and RV starter batteries; 24V matches truck and commercial vehicle systems; 48V is the standard for solar energy storage and telecom backup. Offering all three on one platform means the same inverter body can serve a camper van, a long-haul truck, and a 10kWh solar battery wall — simplifying procurement and spare-parts management for distributors.

Why 110V–240V output is configurable

North America runs 110/120V at 60Hz; Europe, Asia, Africa and Oceania run 220/230/240V at 50Hz. A configurable output lets one SKU ship to any market, and lets overland travelers power local appliances wherever they are. Output voltage and frequency are set at the factory or via OEM configuration before shipment.

Why THD < 3% is the benchmark for "clean"

Total Harmonic Distortion (THD) measures how far the waveform deviates from a perfect sine. Grid power is typically 2–5% THD. Our pure sine wave output stays under 3%, matching or beating utility power — safe for medical devices, variable-frequency motor drives, and any electronics with active PFC circuits.

OPTIONAL CONFIGURATION

Configure It for Your Market

The SP series platform is built for global deployment and OEM customization. Choose input voltage, output voltage, socket type, branding and packaging — all configured before shipment.

Input Voltage (DC)

12V

24V

48V

Output Voltage (AC)

110V

120V

220V

230V

240V

Output Frequency

50Hz

60Hz

Socket Type

Universal

Branding

OEM logo

Neutral

ZentroVolt

Packaging

Color box

Brown box

Bulk

MODEL COMPARISON

Compare Available Models

Browse options from minimum to maximum power output and find the unit best suited to your load requirements.

SPECIFICATION	SP300W 300W	SP1000W 1000W	SP2000W 2000W	SP6000W 6000W
Continuous Power	300W	1000W	2000W	6000W
Peak / Surge Power	600W	2000W	4000W	12000W
Output Waveform	Pure Sine Wave	Pure Sine Wave	Pure Sine Wave	Pure Sine Wave
Input Voltage	12V / 24V / 48V	12V / 24V / 48V	12V / 24V / 48V	24V / 48V
Output Voltage	100-120V/200-240V	100-120V/200-240V	100-120V/200-240V	100-120V/200-240V
Efficiency	90% (full load), 95% (1/3 load)	90% (full load), 95% (1/3 load)	90% (full load), 95% (1/3 load)	90% (full load), 95% (1/3 load)
AC Outlets	1 x AC + USB	2 x AC + USB	2 x AC + USB	2 x AC + USB
USB Port	5V / 2A	5V / 2A	5V / 2A	5V / 2A
Cooling	Smart fan	Dual Smart fan	Dual smart fan	Four smart fan
Housing	Aluminum alloy	Aluminum alloy	Aluminum alloy	Aluminum alloy
Certifications	CE-EMC/LVD, ROHS, UKCA, FCC	CE-EMC/LVD, ROHS, UKCA, FCC	CE-EMC/LVD, ROHS, UKCA, FCC	CE-EMC/LVD, ROHS, UKCA, FCC
OEM Available	Yes	Yes	Yes	Yes

FAQ

Frequently Asked Questions

Real answers to the questions buyers ask about the SP300W — from sizing and battery compatibility to OEM customization.

Will a 300W inverter run a CPAP machine? ▼

Yes. Most CPAP machines draw 60–90W without the heated humidifier, well within the 300W continuous rating. If you use the heated humidifier or heated tube, expect 150–180W — still within range. Add the 600W surge headroom for the brief startup spike.

Can I plug it into my car cigarette lighter? ▼

Yes for loads up to about 150W. The cigarette socket is typically fused at 10–15A, which limits 12V draw to roughly 120–180W. For the full 300W, connect directly to the battery with the included cables.

Is 300W enough for a laptop? ▼

Easily. Most laptops draw 45–100W. A 300W inverter has 3–6x headroom, so the laptop charger runs efficiently and the inverter stays cool.

How long will it run on a car battery? ▼

A 12V 50Ah car battery has roughly 600Wh usable. At a 100W load (laptop + phone), expect about 5–6 hours. We recommend keeping the engine running for long sessions to avoid draining the starter battery.

Does it produce clean power for sensitive electronics? ▼

Yes. The SP300W outputs a pure sine wave with THD < 3%, matching utility-grid quality. It is safe for laptops, cameras, audio gear and medical devices.

Can I use it while the engine is off? ▼

Yes, but monitor your battery. The inverter has low-voltage shutdown at 10.5V to protect the battery from deep discharge, but repeated deep cycles will shorten a starter battery's life — use a dedicated leisure battery for regular stationary use.

What is the difference between 300W continuous and 600W peak? ▼

300W continuous is the power it can deliver indefinitely. 600W peak (surge) is the brief extra power available for a few seconds when a device starts up — for example a mini fridge compressor or a small motor.

Is it safe to leave plugged in? ▼

The inverter draws a small no-load current (< 0.6A). For long-term storage, switch it off using the front-panel switch to avoid draining the battery.

Can I use it with a solar panel? ▼

Yes, through a battery. Connect the solar panel to a charge controller, the controller to a 12V battery, and the inverter to the battery. The inverter cannot connect directly to a solar panel.

Do you offer OEM Branding ▼

Yes. We support custom logo printing, custom socket types (US/EU/UK/AU), custom packaging and private model numbers with low MOQs. Contact our OEM team for details.

“

"We tested four inverter brands before choosing ZentroVolt. The pure sine output was the cleanest on the oscilloscope, and the OEM customization let us launch under our own brand in 30 days."

R. Khalil

Procurement Director, International Trading Group

OEM & ODM

Build Your Brand on the SP300W

SP300W

The SP300W is an OEM-ready platform. Distributors, installers and brand owners can customize everything from logo and housing color to voltage, socket and packaging — with low MOQs and fast lead times.

MOQ

500 pcs

LEAD TIME

30 days

LOGO METHOD

Self-adhesive face label

LANGUAGES

EN, FR, ES, DE

SOCKET OPTIONS

US / EU / UK / AU

VOLTAGE CONFIG

110‑240V

CERTIFICATIONS

Tested and Certified for Global Markets

Every ZentroVolt inverter carries the certifications required for export to Europe, Asia, Africa and Oceania. FCC for North America is available on request.

Conformité Européenne

European safety, health and environmental protection

RoHS

Restriction of Hazardous Substances

No lead, mercury, cadmium or other restricted substances

EMC

Electromagnetic Compatibility

No electromagnetic interference with other devices

LVD

Low Voltage Directive

Electrical safety for equipment operating 50‑1000V AC

Other Power Levels in the SP Series

SP300W

300W Pure Sine Wave

SP600W

600W Pure Sine Wave

SP1000W

1000W Pure Sine Wave

SP1500W

1500W Pure Sine Wave

SP3000W

3000W Pure Sine Wave

GET IN TOUCH

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SP300W

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