FirstPower Pro 300W Power Supply Inverter Review

The FirstPower Pro 300W Power Supply Inverter is a portable powerhouse that converts DC power from your 20V Dewalt or 18V Milwaukee battery into AC power, just like a regular wall outlet. This means you can charge your devices, run your tools, or power your electronics anywhere, anytime.

Imagine you’re camping, and your phone’s battery is low. With the FirstPower Pro 300W Power Supply Inverter, you can simply plug it into your battery and charge your phone. Or, if you’re working on a project and need to use a power tool, this inverter can provide the necessary power. It’s like having a mini power station in your hand.

The FirstPower Pro 300W Power Supply Inverter is designed with a sleek, compact design and is made from durable plastic. It features a clear LCD display, a variety of output ports, including AC outlets, USB ports, and a Type-C port. Additionally, it has a built-in LED light that can be used as a flashlight or a lantern. Whether you’re a DIY enthusiast, an outdoor adventurer, or simply someone who wants to be prepared for power outages, the FirstPower Pro 300W Power Supply Inverter is a valuable investment. Read more…

About Inverter Review

InverterReview.com lets you read reviews on a wide range of power inverters and electrical appliances! You will be able to find a power inverter of your choice from small to large size inverters. So, if you need an in inverter for your vehicle, home or solar system, InverterReview.com may serve you well.

View all posts by Inverter Review →

300W Car Power Inverter - Dual DC to AC Plug Adapter Outlets, 65W USB-C Fast Charging, 24W USB-C & 3.0 USB-A Ports, Portable Car Charger with Switch Control Converter for Laptops, Phones


300W Car Power Inverter - Dual DC to AC Plug Adapter Outlets, 65W USB-C Fast Charging, 24W USB-C & 3.0 USB-A Ports, Portable Car Charger with Switch Control Converter for Laptops, Phones

$25.33 @ Amazon.com (Save 28%)

Product Description

High Power and Multi-Port Design: This 300W Cigarette Lighter Adapter offers robust power output and multiple charging ports to cater to diverse needs on the road. Dual AC outlets handle high-power devices like laptops and small appliances, while two USB-C ports (24W and 65W) and two USB-A 24W ports provide fast charging for various electronics. The multi-port setup allows simultaneous charging of multiple devices, ensuring you don’t run out of power. Ideal for 12V vehicles, it delivers reliable support for family trips, camping, and emergency situations.

Safe and Reliable: This car power inverter 12v to 110v to wall plug features built-in multiple protection mechanisms, including overload protection, short circuit protection, overheat protection, and low voltage protection, ensuring the safety of your devices and vehicle. These protection mechanisms make the High Power Car Inverter safer and more reliable during use, not only protecting your electronic devices but also extending the product's lifespan. Whether on long trips or daily use, it can provide safe and stable power support.

Compact and Portable: The compact and lightweight design of this Portable Car Power Converter makes it easy to store in your car's glove box or center console, perfect for long trips, camping, and emergency use. Its compact design not only saves space but also makes it easy to carry, allowing you to use this car inverter to power electronic devices anytime, anywhere. Whether in the car or outdoors, road trips, long drives, and car camping, it can provide you with convenient power support, keeping you charged at all times.

Quiet Fan and Plug-and-Play Design: This 300W Power Inverter features a built-in quiet fan to ensure the device stays cool and noise-free during extended use. The plug-and-play design makes operation simple; just plug it into your car's power outlet and it's ready to use, with no complex installation required. Whether charging a laptop, tablet, or smartphone, this inverter provides quiet, stable, and convenient power support, making it an ideal choice for long trips, camping, and emergency use.

Durable Casing and Rigorous Quality Assurance: This 300W Power Converter Car Inverter is made with ABS+PC materials, ensuring durability and resistance to wear and impact over long-term use. The text on the product surface is laser-engraved, making it resistant to fading and peeling. Before leaving the factory, each device undergoes multiple safety tests and simulated transportation tests, including collision, vibration, and drop tests, to ensure reliability and durability under various conditions. We also offer a one-year quality guarantee, with a replacement policy instead of repair during this period, ensuring worry-free use.

Excellent Customer Service: We offer a one-year quality guarantee with a no-repair, replacement-only policy, ensuring your peace of mind. Additionally, we provide free refunds and 24-hour customer support, so you can purchase with confidence. (Friendly reminder: Our products are designed inverters from 12V to 110V. Before purchasing, please make sure that the output voltage of your vehicle is compatible, a few vehicles have an output voltage of more than 12V and cannot use this car power inverter.)

Product Details
Brand: DrimMek
Model #: MT-PC200XS
Warranty: 1
Color: black
Dimensions: 5.5 X 3 X 1.4 Inches (Length X Width X Height)
Price: $25.33 (Save 28%)
300W Car Power Inverter - Dual DC to AC Plug Adapter Outlets, 65W USB-C Fast Charging, 24W USB-C & 3.0 USB-A Ports, Portable Car Charger with Switch Control Converter for Laptops, Phones

BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter


BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

$24.59 @ Amazon.com (Save 18%)

Product Description

BESTEK Advantage: America's leading power inverter brand. Provides 300 Watts continuous DC to AC power and 700 Watts instantaneous power, featuring 2 AC outlets and 2 USB ports

Fast Charging: two 110V AC outlets for charging larger devices such as laptops and tablets, 2 USB charging ports (0-2.4A) for powering USB compatible devices, a good choice as requisite car accessories

Ultra Compact and Lightweight: iPhone-sized design ideal for use on vacations, work trips, and camping. 24 inch cigarette lighter plug makes the power inverter can be plugged into almost any vehicle

Multi-Protection: built-in 40 amps fuse to protect your device. Safe charging design provides protection against, overheating, under and over voltage charging, short circuiting

Durable metal housing provides advanced protection from drops and bumps.Smart cooling fan system makes the car power inverter very silent when operating,and the fan runs faster when the device gets warmer or output power exceeds 70W

Product Details
Brand: BESTEK
Model #: MRI3011BU
Warranty: 18 Months
Size: 1 - Power Inverter
Color: Red
Dimensions: 4.8 X 3.1 X 1.9 inches (Length X Width X Height)
Price: $24.59 (Save 18%)
BESTEK 300W Power Inverter DC 12V to 110V AC Car Inverter with 4.2A Dual USB Car Adapter

LLTOP LED Driver 300 Watts Waterproof IP67 Power Supply 90-130V AC to 12V DC 25A Low Voltage Transformer Converter Power Adapter for Indoor Outdoor LED Lights


LLTOP LED Driver 300 Watts Waterproof IP67 Power Supply 90-130V AC to 12V DC 25A Low Voltage Transformer Converter Power Adapter for Indoor Outdoor LED Lights

$59.88 @ Amazon.com

Product Description

[Low voltage Transformer]: Constant voltage power supply input: AC90-130V 50/60Hz Output: DC12v, 25A, 300w, 3.3 feet input cord with US standard 3-prong plug

[Multi safety Protections of led power supply]: Automatic safety protection for short circuit, overload, over voltage, over current, over temperature

[Waterproof and Ultra Slim]:100% waterproof IP67, size of 9.68x3.15x1.57 inches suitable for multi scene

[Wide Range of Applications]: Converts 110V/120V AC to 12V DC, widely use for led strip lights, led landscape lighting, pool lights, outdoor led signs, modules

[Durable Material]: Aluminum alloy housing easy for heat dissipation, waterproof glue full filled inside to protect components operation stability

Product Details
Brand: LLTOP
Model #: 12v 300w
Size: 12V 300W
Dimensions: 3.15 X 9.68 X 1.6 inches (Length X Width X Height)
Price: $59.88
LLTOP LED Driver 300 Watts Waterproof IP67 Power Supply 90-130V AC to 12V DC 25A Low Voltage Transformer Converter Power Adapter for Indoor Outdoor LED Lights

ALLWEI 300W Car Power Inverter with 65W USB-C and 3.0 USB Port - DC 12V to 110V AC Power inverters for Vehicles Converter Fast Charging Ports Car Charger Adapter (Red)


ALLWEI 300W Car Power Inverter with 65W USB-C and 3.0 USB Port - DC 12V to 110V AC Power inverters for Vehicles Converter Fast Charging Ports Car Charger Adapter (Red)

$24.98 @ Amazon.com (Save 14%)

Product Description

【USB-C PD65W】Car inverter featuring USB-C PD65W, Enjoy fast charging with 65W max(5V3A;9V3A;12V3A;15V3A;20V3.25A(65W Max) output for your laptop, tablets, cell phones, and various other devices. If your device requires 20W, this USB-C port will automatically adjust to deliver the optimal 20W for high-speed charging

【Premium 300W Power Inverters】Power inverter with 2 AC outlets, 1 PD 65W USB-C port and 1 USB-A Fast Charger 18W port, Provides 300 watts continuous DC to AC power and 600 watts of peak power. 12v to 110v converter great for charging string lights, laptop, breast pump, game console, TV, DVD players, car vacuum cleaners, Christmas gifts car lights and more

【Fast Charging】When using USB-C and USB-A ports simultaneously, power is efficiently distributed between the two ports to provide optimal charging speeds. WARM TIP: car power inverter for DC 12V and Car ONLY, not applied for DC 24V and airplane use. Please do not leave the power inverter in the ON position while your car is off

【Mufti-Protection】Inverter 12v to 110v built-in fuse to protect your device, safe charging design provides protection against, overheating, under and over voltage charging, short circuiting, overloads, and overcharging

【More Convenient 】Power inverters for vehicles Plug directly into your cigarette lighter socket,The length of the Cord is 33 inch,to satisfy people using easily who sit in backseat,with fastening tape,which is more convenient to keep

【Upgraded Cooling Effect】Power inverters built-in very silent automatic temperature-controlled cooling fan helps reduce heat and prevent shortages. Durable metal housing provides advanced protection from drops and bumps

Product Details
Brand: ALLWEI
Model #: SGR-NX3011SK-6
Warranty: 18 months
Size: Red 300W
Color: 300W Red PD65W
Dimensions: 4.7 X 3.1 X 1.8 Inches (Length X Width X Height)
Price: $24.98 (Save 14%)
ALLWEI 300W Car Power Inverter with 65W USB-C and 3.0 USB Port - DC 12V to 110V AC Power inverters for Vehicles Converter Fast Charging Ports Car Charger Adapter (Red)

BESTEK 300Watt Pure Sine Wave Power Inverter [30W PD USB-C] Car Adapter DC 12V to AC 110V with QC3.0 USB Ports, Multi-Protection Car Charger Power Inverter for Vehicles

BESTEK 300Watt Pure Sine Wave Power Inverter [30W PD USB-C] Car Adapter DC 12V to AC 110V with QC3.0 USB Ports, Multi-Protection Car Charger Power Inverter for Vehicles

$41.99 @ Amazon.com

Product Description

〖EFFICIENT QUICK CHARGING〗38W fast Type-C car inverter supporting PD 20W(Max) and QC 18W(Max) high output, can fast charge all prevailing phones simultaneously. The PD port, 6X faster than a 2.4A charger, can quickly charge iPhone, iPad, MacBook, etc.

〖BESTEK 300W PURE SINE WAVE INVERTER〗designed for your devices that require careful protection, provide 300W continuous DC to AC power and 700W of peak power. And DC 12v to AC 110v power inverter featuring PD 30W&QC 18W USB ports, 2 AC Outlets and a 24 inch cable with cigarette lighter plug. Great for Christmas gift, charging string lights, laptop, speakers, camera, nebulizer, game console, kindle, iPad and other.

〖SAFE PROTECTION FOR CHARGING〗Built-in 40 amps fuse to protect your device, LED indicators for short circuit protection, temperature control, under-voltage, and over-voltage protection. It helps protect and extend the life of your electronics and appliances.

〖QUIETCOOLING FAN〗The smart cooling fan will automatically rotate at different speed according to power load and temperature, this design can help to reduce the fan noise.Also the high speed cooling fan protect the inverter against overheating.

〖RELIABLE QUALITY WARRANTY〗If you have any questions or dis-satisfactions with your purchase,24H x 7D technical and friendly customer service support, BESTEK guarantees you a refund within 180 Days, and an 18-Month Product Replacement Warranty.

Product Details
Brand: BESTEK
Model #: MRZ3011HU-PD-BKRD
Warranty: 18 MONTH
Color: Black + Red
Dimensions: 7 X 5 X 2 Inches (Length X Width X Height)
Price: $41.99
BESTEK 300Watt Pure Sine Wave Power Inverter [30W PD USB-C] Car Adapter DC 12V to AC 110V with QC3.0 USB Ports, Multi-Protection Car Charger Power Inverter for Vehicles

300W Power Inverter DC 20V to AC 110V for Dewalt: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 2 USB Ports for Car, Vehicles, Laptop, Phone, String Light, Fan


300W Power Inverter DC 20V to AC 110V for Dewalt: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 2 USB Ports for Car, Vehicles, Laptop, Phone, String Light, Fan

$38.99 @ Amazon.com

Product Description

6-in-1 Power Inverter: The 300W portable power inverter features 2 AC outlets, 3 USB-A port (18W 5V 2.4A/3A), and 1 USB-C (27W 5V 3A) port which can provide 300 watts continuous DC 20v to AC 110v-120v power, allowing you to charge multiple devices simultaneously, making it ideal for use in driving, road trips, or while camping.

High-Speed 300W Charging: The charger adapter 20v can deliver fast and efficient power to a wide range of devices, including smartphones, projectors, tablets, laptops, electric fans, cell phones, speakers, string Christmas lights and other electronic devices.

Compatible with DeWalt 20V Batteries: This allows you to charge your electronic devices anytime, even in remote locations without power—simply bring your battery (Note: battery NOT included). Including model DCB206 DCB204 DCB181 DCB182 DCB200 DCB203 DCB204-2 DCB206-2 and more.

Multi-Layer Protection: Utilizing advanced SPWM chip technology (smaller/lighter/quieter/higher conversion efficiency), the device incorporates a safe charging design with a built-in 40A fuse. It provides comprehensive safeguards against overload, overheating, undervoltage, overvoltage charging, and short circuits.

Built to Last and Rapid Cooling: Featuring advanced drop and impact resistance for enhanced life span. The intelligent cooling fan system ensures ultra-quiet operation of the battery inverter, while automatically adjusting fan speed for faster cooling when device temperature rises or output power exceeds 70W.

Product Details
Brand: LIVOWALNY
Model #: power supply
Warranty: 1 Year
Size: For Dewalt 20V Battery
Dimensions: 5.905511805 X 5.905511805 X 1.968503935 Inches (Length X Width X Height)
Price: $38.99
300W Power Inverter DC 20V to AC 110V for Dewalt: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 2 USB Ports for Car, Vehicles, Laptop, Phone, String Light, Fan

RoyPow 300W Car Power Inverter, DC 12V to 110V AC Power Inverter with Cigarette Lighter Port, Car Plug Adapter Outlet with 3.4A USB-A, QC3.0 24W, PD 30W, PD 36W, Dual AC Outlets, Car Charger Adapter


RoyPow 300W Car Power Inverter, DC 12V to 110V AC Power Inverter with Cigarette Lighter Port, Car Plug Adapter Outlet with 3.4A USB-A, QC3.0 24W, PD 30W, PD 36W, Dual AC Outlets, Car Charger Adapter

$49.99 @ Amazon.com

Product Description

【Powerful 300W Car Power Inverter】: RoyPow 300W Car Power Inverters provide 300W continuous DC to AC power, converting DC 12V to AC 110~120V. It is equipped with two 110V AC outlets, a 21-inch cable with a cigarette lighter socket and 4 USB ports: USB-A 3.4A, QC3.0 24W, PD 30W and PD 36W, which enable you to charge multiple devices simultaneously. Great for your phone, drone, laptop, tablet, string lights, camera, kindle, DVD, etc. Note: Ensure your device's power doesn't exceed 300W for safe usage.

【Multi-Protection】: Designed to keep your devices safe and ensure longer-lasting performance, RoyPow car power converter is made of insulated, flame-retardant ABS material, and the built-in fuse design to protect your device and appliances from overheating, under voltage charging, over voltage charging, overload, overcharging, and short circuit.

【Durable Cigarette Lighter & Cigarette Lighter Socket Design】: The cigarette lighter features a double spring design on both sides that is securely mounted and is resistant to up to 5000 times of insertion and extraction. Secure plug-in buckle design with stable current and built-in USB charging ports. You can plug into almost all vehicles. Plus, you can charge your appliances through the cigarette lighter socket, and it's also ready for your car diffuser, car TV, cooler, vacuum cleaner, etc.

【PD36W/PD30W/QC3.0 High-Speed Charging】: The 300W modified sine wave power inverter supports PD 36W, PD 30W & QC3.0 24W high output, can automatically detect your devices and fastest charge your multiple devices simultaneously, and shorten your charging time. Both the fastest charging speeds of the PD30W Type-C, PD36W Type-C and QC3.0 USB-A are up to 3 amps. The PD 36W/30W port provides fast charging for iPhone. The 24W QC 3.0 port can charge most Android devices from 0% to 80% in 30 minutes.

【Smart Quiet Cooling Fan & LED Display】: Equipped with a smart temperature-controlled cooling fan, designed to regulate the car plug adapter's temperature, help the car power inverter to dissipate heat quickly, and enjoy uninterrupted performance. It will automatically rotate at different speeds according to power load and temperature, making the car power inverter remain silent and efficient during operation. The LED display updates the DC input voltage in real time, helping you know the voltage of your car battery at a glance.

【AC Output Power Switch & LED Atmosphere Light & Power Indicator】: The AC Power Switch gives you full control over the AC power output, adding a layer of safety and convenience. USB Ports and Type-C Ports can provide enough power for other devices, even when the AC power switch is turned off. The blue LED ambient light and the power indicator automatically light up when the car power inverter is powered. In addition, the power indicator can display the charging status of the car power inverter.

Product Details
Brand: RoyPow
Model #: 7081
Warranty: 18-Month Warranty
Size: 300W
Dimensions: 5.83 X 3.11 X 1.42 Inches (Length X Width X Height)
Price: $49.99
RoyPow 300W Car Power Inverter, DC 12V to 110V AC Power Inverter with Cigarette Lighter Port, Car Plug Adapter Outlet with 3.4A USB-A, QC3.0 24W, PD 30W, PD 36W, Dual AC Outlets, Car Charger Adapter

RYOBI RYi300BG 300-Watt Powered Inverter for 40-Volt Battery


RYOBI RYi300BG 300-Watt Powered Inverter for 40-Volt Battery

$94.25 @ Amazon.com

Product Description

Perfect for Powering Small Electronic Devices: Laptops, Tablets, and Cell Phones

Outlet Types: 1 USB-A Outlet, 1 USB-C Outlet and 1 120V Wall Outlet

Pure Sine Wave Technology: Safe for Small and Sensitive Electronics

40V 300 Watt Power Source Battery Inverter

Product Details
Brand: RYOBI
Model #: RYi300BG
Dimensions: 8.46 X 5.79 X 5.2 inches (Length X Width X Height)
Price: $94.25
RYOBI RYi300BG 300-Watt Powered Inverter for 40-Volt Battery

300W Power Inverter 18V to 110V for Milwaukee Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Port for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan


300W Power Inverter 18V to 110V for Milwaukee Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Port for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan

$39.99 @ Amazon.com

Product Description

Premium 300W Power Inverters: This VoLtTech 300W Car Power Inverter is a versatile device that combines a car plug in adapter outlet, a power converter, and a charger in one compact unit. It features 2 AC outlets, 3 USB-A port (27W 5V 2.4A/3A), and 1 USB-C (18W 5V 3A) port, allowing you to power multiple devices simultaneously while on the go.

Fast and Efficient Charging: Equipped with PD 18W USB-C and QC 27W USB-A ports, this battery adapter can rapidly charge most phones and tablets (Max 5.4A total output). Additionally, the AC 110v outlets are perfect for powering laptops, computers, game consoles, TVs, DVD players and other electronic devices. With its high power output and fast charging capabilities, it is an essential accessory for road trips, camping, or everyday use.

Compatible with Milwaukee 18V Batteries: Works seamlessly for milwaukee for m18 batteries, enabling you to charge your devices on the go—even in areas without power. Just bring your battery (Note: battery NOT included). Compatible models include 48-11-1820 48-11-1822 48-11-1840 48-11-1850 48-11-1852 48-11-1860 48-11-1862, and more.

High Quality Metal Housing: This power supply provides strong protection and efficient heat dissipation, ensuring long-lasting performance. This for m18 battery adapter equipped with advanced intelligent chips that automatically detect the voltage and current requirements of different devices, preventing overheating, undervoltage, overcurrent, overvoltage, overload, and short circuits. Your safety is always our top priority.

Compact and Portable Design: Just about cell phone size - 5 x 3 x 1.5 inches, this charger adapter is extremely portable and space-saving.

Product Details
Brand: VoLtTech
Model #: 09f9e3f7-48e9-4837-a8f8-a3e849fac543
Warranty: 1 Year
Dimensions: 5 X 3 X 1.5 inches (Length X Width X Height)
Price: $39.99
300W Power Inverter 18V to 110V for Milwaukee Battery: VoLtTech Battery Inverter DC Charger Adapter with 2 AC Outlet & 2 USB Port for Car, Vehicles, Laptop, Computer, Phone, String Light, Fan

PROGENY 300W Portable Power Station, 299Wh/80818mAh Solar Generator, Regulated DC Output Backup Battery with Pass-Through Charging AC Outlet, Pure Sine Wave, LED Light Power Station for CPAP Camping


PROGENY 300W Portable Power Station, 299Wh/80818mAh Solar Generator, Regulated DC Output Backup Battery with Pass-Through Charging AC Outlet, Pure Sine Wave, LED Light Power Station for CPAP Camping

$129.98 @ Amazon.com

Product Description

More Powerful In Less Weight : 299Wh/80818mAh portable power station weights only 7lb, powerful enough to charge smartphones (2000mah) 40 times, laptops (56wh) 4-5 times, mini fridge(45W) about 6-18 hours, CPAP 2-4 nights(using DC converter). Ideal for camping, home emergency, travel, fishing, van life.

Multiple Outputs For Choice: This solar powered generator features 1*pure sine wave 110v AC outlet (300w rated, 600w peak); 1*car port (12V/10A, 120w max); Built-in QC 3.0 USB and USB-C output(9V/2A, 18w max) can charge your small digital devices effectively; Fast charger on the top is convenient to charge your phone any where when you forget to bring usb cable (*All ports support pass-through charging*)

Smart 12V Regulated Power: Progeny P66 300W power station was the 1st to offer regulated 12v outout comparing to most similar power staions on the market, 12V regulated power can keep you trouble-free from the devices shutting down when the battery is low (like electric cooler, freezer, CPAP)

Charge It Anywhere: Built-in professional MPPT technology, this solar generator provides faster solar recharge rates by Progeny 120W solar panel (sold separately) about 6-7 hrs; Recharge from a carport within 7-8 hrs while on-the-road/off-road; It also can be full charged by AC wall outlet within 6-7 hrs

Safe And Reliable: P66 portable battery pack use battery management system (BMS) to improve battery utilization, extend battery life through short protection, overcurrent protection, overvoltage protection, overload protection, and overheating protection; With Pure Sine Wave charges your devices more stable and safety without damage and reduces audible electrical noise

Product Details
Brand: PROGENY
Model #: P66
Warranty: 24-months warranty and exchange while new version released
Size: 300W
Color: Orange
Dimensions: 8.2 X 6.2 X 5.8 inches (Length X Width X Height)
Price: $129.98
PROGENY 300W Portable Power Station, 299Wh/80818mAh Solar Generator, Regulated DC Output Backup Battery with Pass-Through Charging AC Outlet, Pure Sine Wave, LED Light Power Station for CPAP Camping

Please share this:

Facebook         Twitter         Linkedin         Pinterest        

Leave a Reply

Your email address will not be published. Required fields are marked *