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…

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300W Power Inverter DC 18V to AC 110V for Milwaukee: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 5.4A Dual USB Ports for Car, Vehicles, Laptop, String Light


300W Power Inverter DC 18V to AC 110V for Milwaukee: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 5.4A Dual USB Ports for Car, Vehicles, Laptop, String Light

$39.99 @ Amazon.com

Product Description

6-in-1 Power Inverter: The 300W portable for m18 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 18v 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 18v 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 Milwaukee 18V 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 48-11-1820 48-11-1822 48-11-1840 48-11-1850 48-11-1852 48-11-1860 48-11-1862, 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 Milwaukee 18V Battery
Dimensions: 6.299212592 X 6.299212592 X 2.362204722 inches (Length X Width X Height)
Price: $39.99
300W Power Inverter DC 18V to AC 110V for Milwaukee: LIVOWALNY Battery Inverter Charger Adapter Power Supply with 2 AC & 5.4A Dual USB Ports for Car, Vehicles, Laptop, String Light

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

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

$42.99 @ Amazon.com (Save 28%)

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: $42.99 (Save 28%)
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 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

$35.99 @ Amazon.com (Save 10%)

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: $35.99 (Save 10%)
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

BESTEK 300W Car Power Inverter with 65W USB-C and QC3.0 Ports - 12V DC to 110V AC Converter for Vehicles with Multi-Protection - Red

BESTEK 300W Car Power Inverter with 65W USB-C and QC3.0 Ports - 12V DC to 110V AC Converter for Vehicles with Multi-Protection - Red

$39.99 @ Amazon.com

Product Description

BESTEK Advantage: America's leading brand of car power inverter. Offers 300 watts of continuous DC to AC power and 700 watts of instant power with 2 AC outlets, 1 PD 65W USB-C port and 1 USB-A QC 18W port to easily and quickly charge and power most of your devices

PD 65W Fast Charging: Our car inverter has been newly upgraded with a 65W USB-C charging port that allows you to quickly charge your digital devices quickly. You'll get 65W of maximum power when you connect a single device, which is enough to power a 2020 MacBook Pro 13-inch at full speed. When you use both the USB-C and USB-A ports, power is efficiently distributed between the ports to ensure your devices get the optimal charge rate

Powerful and Versatile: This 300W power inverter has 2 AC outlets with 65W USB-C and QC18W USB-A charging ports and can power up to 4 devices simultaneously. You can quickly charge your cell phone, laptop, camera, tablet and other digital devices on the go, as well as power other devices such as air pumps, breast pumps, CPAP machines, nebulizers, car vacuum cleaners and more

Smart Cooling Fan: Our car pulg adapter has a built-in intelligent cooling fan, which will automatically turn on when the internal temperature is too high. The intelligent cooling fan will automatically rotate at different speeds according to the power load and temperature, this design helps to reduce fan noise

Multi-Protection: Our car outlet adapter built-in fuse, safe charging technology can provide overheating, undervoltage/overvoltage charging, overload and short circuit protection, which can effectively protect your device and battery

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

Product Details
Brand: BESTEK
Model #: MRI3011BUPD65W
Warranty: BESTEK guarantee you refund within 180 Days, and 18-Month Product Replacement Warranty.
Size: 2 - PD 65W
Color: Red
Dimensions: 2 X 4 X 6 inches (Length X Width X Height)
Price: $39.99
BESTEK 300W Car Power Inverter with 65W USB-C and QC3.0 Ports - 12V DC to 110V AC Converter for Vehicles with Multi-Protection - Red

AIMS Power PWRI30012S Pure Sine Power Inverter with USB Port, 12 VDC 300 Watt Continuous Power, 600 Watt Peak Power, USB Port, Cables Included


AIMS Power PWRI30012S Pure Sine Power Inverter with USB Port, 12 VDC 300 Watt Continuous Power, 600 Watt Peak Power, USB Port, Cables Included

$98.00 @ Amazon.com (Save 14%)

Product Description

POWERFUL: 300W max continuous power, 600W surge, clean pure sine power, soft start technology, compact design, lightweight,

PROTECTIONS: overload, over temp, high voltage, low voltage, short circuit, internally fused, low and high voltage alarm, cooling fan, and isolated ground neutral.

FEATURES: Works with small electronics, and much more. Includes USB port, cables and LED indicators. If additional outlets are needed, simply add an outlet splitter.

TRUST AIMS: Buy with confidence. In the inverter business for over 20 years. All tech support, warranty, and sales supported in Nevada.

APPLICATIONS: Ideal for back-up or off grid power system using a 12V battery(s) in homes, boats, cabins, solar, bus, vans, and vehicle outfitters

Product Details
Brand: AIMS Power
Model #: PWRI30012S
Warranty: Manufacturer Warranty
Size: 300 Watt
Color: GREY
Dimensions: 7.25 X 3.65 X 2.2 Inches (Length X Width X Height)
Price: $98.00 (Save 14%)
AIMS Power PWRI30012S Pure Sine Power Inverter with USB Port, 12 VDC 300 Watt Continuous Power, 600 Watt Peak Power, USB Port, Cables Included

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

$25.99 @ Amazon.com (Save 26%)

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: $25.99 (Save 26%)
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

300Watt Pure Sine Wave Power Inverter DC 12volt to AC 120volt Car Converter Adapter with Dual USB Ports for Smartphones Laptops Tablets


300Watt Pure Sine Wave Power Inverter DC 12volt to AC 120volt Car Converter Adapter with Dual USB Ports for Smartphones Laptops Tablets

$49.82 @ Amazon.com

Product Description

GIANDEL 300Watt PURE SINE INVERTERS designed for your devices that require careful protection, provide 300Watt continuous DC to AC power in car and with 2 AC outlets and 2 USB charging ports, great for Christmas gift, charging string lights, laptop, speakers, cameras, nebulizer, game console, kindle, iPad and other

Equipped with 2 Smart USB charging ports, which detect your devices automatically to deliver its fastest charge speed up to 2.4 amps per port , it can charge most phones,tablets,power banks simultaneously

Super silent and smart cooling fan design makes this 300W power inverter easier to dissipate heat, and durable cigarette lighter plug is easy to plug into a cigarette socket.Solid copper wire reduce the idle current to be only 0.35A max.

Super Low idle current and with external replaceable 30 amps fuse and full protection against overheating, under and over voltage , short circuit, overload,Low Voltage alarm. Isolation protection design.

Made by aluminum alloy housing provides better protection from drops and bumps. Giandel provides 18 months Warranty.Product liability is covered by AIG.

Product Details
Brand: Giandel
Model #: PS-300B
Color: 300W Red
Dimensions: 6.22 X 4.13 X 1.77 inches (Length X Width X Height)
Price: $49.82
300Watt Pure Sine Wave Power Inverter DC 12volt to AC 120volt Car Converter Adapter with Dual USB Ports for Smartphones Laptops Tablets

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

$139.98 @ 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: $139.98
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

Power Inverter for Milwaukee 18V Battery,300W Portable Outdoor Battery Converter with 3USB 1Type C&2AC Outlets, Converting DC 18V/20V to AC 110V-120V, for Camping, RV, and Emergency Power (Tool Only)


Power Inverter for Milwaukee 18V Battery,300W Portable Outdoor Battery Converter with 3USB 1Type C&2AC Outlets, Converting DC 18V/20V to AC 110V-120V, for Camping, RV, and Emergency Power (Tool Only)

$38.99 @ Amazon.com (Save 9%)

Product Description

Unmatched Compatibility: Engineered for seamless integration, this inverter works with a wide range with Milwaukee 18V lithium-ion batteries—including models8-11-1820 48-11-1822 48-11-1840 48-11-1850 48-11-1852 48-11-1860 48-11-1862 and more. It’s your reliable power partner for remote outdoor settings. (Batteries not included.)

High-Efficiency 300W Power Conversion: Convert DC 20V to AC 110V effortlessly, ensuring your essential electronics—smartphones, laptops, tablets, cameras, and lights—stay charged during power outages or on the go.

Versatile Charging Options: Stay connected with both a standard AC 110-120V outlet and 3 USB ports (DC 5V/5.4A) and 1 Type C, offering flexible charging solutions whether you’re working or enjoying outdoor adventures.

Military-Grade Safety System: Featuring a compact fan and optimized ventilation for superior heat dissipation, this inverter is built with robust safety protections against short circuits, over-current, under-voltage, and overheating to safeguard your devices and enhance your peace of mind.

Advanced Low Voltage Protection: Integrated overload, over-current, overheat, and low voltage protection mechanisms automatically shut down the inverter when battery voltage drops below 15V or rises above 24V, preventing over-discharge and ensuring long-lasting battery health.

Product Details
Brand: Ecarke
Model #: SKU071040003-US-5
Warranty: 1 year
Size: Fit for Milwaukee
Dimensions: 4 X 2 X 1.5 inches (Length X Width X Height)
Price: $38.99 (Save 9%)
Power Inverter for Milwaukee 18V Battery,300W Portable Outdoor Battery Converter with 3USB 1Type C&2AC Outlets, Converting DC 18V/20V to AC 110V-120V, for Camping, RV, and Emergency Power (Tool Only)

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