Selecting the right inverter for you


Ring’s new range of inverters are compact, efficient and give better power management information for operators. For installers, they allow easier, quicker installation and have a smaller footprint. The new inverters, available in both Pure Sine Wave and Modified Sine Wave, now include a power saving mode to ensure battery power lasts for as long as possible. The new models are reduced in weight and have up to 40% smaller footprints than previous models, helping save valuable space in commercial vehicles.


Compatibility Chart

Use our simple flow diagram to help
guide you to your correct inverter.


carnation diagram (click to expand)

What inverter is right for you and what you need to check? 

Pure Sine Wave inverters tend to be more expensive but provide an extremely pure sine wave output which replicates the normal domestic mains supply, and as such they are ideal for powering more sensitive electronic equipment.

Modified Sine Wave inverters tend to be cheaper, but although they can be just as powerful as Pure Sine, they may produce some interference, so are best suited to simple systems that don’t have any delicate electronics or audio equipment that may pick up the choppy wave and produce a hum.

Surge Power

Check the inverter can handle the startup or surge power required by the equipment. For example, a microwave with a cooking power of 800W can require up to 2400W surge power during startup, therefore an inverter with this surge capability will be needed. User must ensure the rated power of the inverter is not exceeded. Note: devices such as microwaves, compressors etc. can have instantaneous power surges at startup, that can be two or three times their rated output.


Rated Power Find the power rating for all appliances that could be used at the same time. If only the operating current is shown then use the following formula to calculate the power:
Power (Watts) = Current x 240

Laptop: 150W
Angle grinder: 500W
Work light: 300W
In this instance, a Ring inverter with at least 1000W Output would be recommended.


What is an RCD?
An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you touch something live, such as a bare wire. It can also provide some protection against electrical fires. RCDs offer a level of personal protection that ordinary fuses and circuit-breakers cannot provide.

What does an RCD do?
An RCD is a sensitive safety device that switches off electricity automatically if there is a fault.

How does it work?
An RCD constantly monitors the electric current flowing through one or more circuits it is used to protect. If it detects electricity flowing down an unintended path, such as through a person who has touched a live part, the RCD will switch the circuit off very quickly, significantly reducing the risk of death or serious injury.

As an increase safety measure we offer a range of inverters with integral RCD. This can replace the need for an external RCD and will switch off the inverter in the event a fault is detected between live and earth - Protecting the user against electric shocks and protecting fleet managers.

  • Increased safety
  • Reduced installation time and cost
  • A more compact solution


All our inverters, whether modified or pure sinewave that do not have a screen, are compatible with our remote LCD screen. With 6m of cable the LCD screen can be mounted in a position that is easier to read than where the inverter is positioned on a vehicle.

This allows a driver or the vehicle operator to take readings on how the inverter is functioning and whether or not the power draw from the battery is too much.

  • Input volts provides warning when battery is becoming low

  • Output watts indicated when power is approaching maximum

  • Hours remaining function allows power management