Ring Automotive MP300 12V Modified Sinewave 240W Inverter

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Quoting product code: A28TB


About this product


  • 240W continuous output to power a range of common household appliances
  • Modified sinewave output
  • 240Vac output to power a product without additional connectors

Product overview

• 240W continuous output to power a range of common household appliances
• Modified sinewave output
• 240Vac output to power a product without additional connectors
• 12Vdc power socket and battery clips to allow a simple connection with the car’s battery
• Weighs only 625g and its compact design (115mm x 180mm x 55mm) prevents it getting in the way
• 500mA USB connector to charge an additional device such as a Smartphone or a Sat Nav

Special Feature
• Shutdown protection against overload

What is an inverter?
An inverter is a converter that connects to a sealed lead acid (SLA) battery that is usually connected to a car, a truck or a solar panel. The inverter can connect to the battery either through a car accessory plug or by clipping directly to the battery. A mains powered device can then be plugged directly into the inverter’s AC socket. Inverters vary in capacity and can power devices of up to a specific wattage. Inverters can be split into two categories: pure sinewave and modified sinewave.

What makes this inverter unique?
The MP300 inverter connects to the car battery through either the car accessory socket or by connecting directly with alligator clips. The inverter can power a device up to 240W, such as a laptop or small television. It is highly efficient, converting 90% of its energy supply into output power. It is fitted with a 500mA USB socket to charge a wide range of devices such as a compatible smart phone or a dash cam, while still keeping the mains socket available to power an additional item such as a battery charger. It also has shutdown protection to power down the inverter if the battery power drops below a certain level.

What is the difference between pure sinewave and modified sinewave?
All household mains sockets output a sinewave along the cable to transfer power from the source, such as the battery or plug to the product that is plugged in. This product is a modified sinewave inverter which produces a stepped approximation of a pure sinewave inverter which makes it easier to produce. A modified sinewave inverter can power devices such as laptops, printers and chargers, although some items may pick up interference from the inverter. A solution for this is to upgrade to a pure sinewave inverter, such as A71JW. A pure sinewave inverter is used to power sensitive electronic devices such as power motors, power tools, clocks or microwaves.


Connector Car plug & battery clips
Cable length 80 cm
Input voltage range 12 V
Standby input current: 0.25 A
Output voltage: AC 240 V
Output frequency: 50 Hz
Output power: 240 W continuous
Peak output power: 300 W
Output waveform Modified sinewave
Efficiency 90 %
Dimensions 115 mm x 180 mm x 55 mm
Weight 625 g
USB output 0.5 A
Low battery protection Yes
Shutdown protection Yes

Hello. I need to power a hozelock garden pump model 7819 from my car. Would this product be enough for the job?

Asked by: Jorge
Dear Neil, Thanks for the update, that means this is not compatible with the Samsung smart phones, where I could a use as a phone answering, kindly let me know is there anyway I could make use of this geature on a Samsung galaxy note 3 Best Regards Nicholas
Answered by: Gladwin
Date published: 2015-08-30

I need to plug in a device that says 240v 1.2A. Is this OK at 300w. Thank you

Asked by: david
can the device can power a portable pa system?
Answered by: groove factory conobus
Date published: 2015-07-17

Hi can assure me that this inverter has the male plug to fit in the cigarette lighter socket please. Thanks
Asked by: Michael Delgado
Yes this is supplied with both the Cigarette power plug and crocodile clips.
Answered by: rs
Date published: 2015-07-17
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