Sine Wave Inverters

True sine wave inverters produce AC electricity that has the same wave form as that supplied by the national grid. Although more costly than our range of modified sine inverters which have an approximated wave form, they run many electrical appliances far more smoothly and reliably. We only sell reliable, good quality brands.

Both the Cotek and Studer inverters are exceptionally well made, and come with a range of protective features. They have an excellent overload capacity, and for short bursts can be used at loadings well above their nominal continuous load rating. They come in a very wide range of power classes for both 12V and 24V DC input systems, which enables the optimal inverter to be chosen for any application - from charging up your mobile phone to powering heavy duty power tools and household appliances.

Mastervolt's ranges of marine-grade pure sine wave inverters are amongst the best quality available anywhere. Fully featured and designed to work in the toughest conditions, Mastervolt's products have a well deserved reputation for quality and reliability and a two-year manufacturer's warranty.

Mastervolt Combi units are the simple and safe solution for dual voltage systems. A dual-purpose inverter and battery chargers in a single device. They automatically manage all your 12V and 240V systems to ensure that you can power your appliances AND keep your batteries as full as possible at all times. There is no need for any AC changeover switches and no need to remember to switch your inverters and chargers on and off.

You might like to read our introduction to inverters before buying to understand a bit more about the difference between sine wave and modified sine wave inverters, and what you can power from them!

2 models available



500W EP EVER 12V Inverter

500W 12V

1000W 24V

A transformer based 500W pure sine wave inverter.
5 models available




12V 500W

12V 1KW

12V 2KW

48V 2KW

48V 3KW

A 12V 500W Inverter Charger. A perfect off grid companion.
4 models available



Fountainhead 1000W pure sine inverter - 12V

KS1000P 12V

KS1500P 12V

KS2000P 12V

KS3000P 24V

New line!
Imported directly to allow us to offer the lowest prices possible, this is the best value 1000W pure sine inverter we stock. This 1000W model will power many of your domestic appliances and comes with a one year manufacturer's warranty.
3 models available



Durite 125W Pure Sine Inverter




A rugged, high quality pure sine wave inverter from top UK manufacturer Durite - a unit you can depend upon.
5 models available



Victron Pheonix 12V 800W sine wave inverter

12V 800W

12V 1200W

12V 1600W

12V 2000W

12V 3000W

A 12V, 800W inverter with pure sinewave output, high peak power and high efficiency.


Mastervolt AC Master 12V 300W pure sine inverter

MV AC Master

The smallest in the range, this 350W pure sine inverter is good value for money and will run even sensitive electronic equipment perfectly.
3 models available

MV Mass Sine


Mastervolt Mass Sine 12V 800W sine wave inverter




Mastervolt's Mass Sine wave of professional grade marine inverters are tough and reliable, highly specified and suitable for all AC equipment.
4 models available

MV Combi


Mastervolt Mass Combi 60A / 1200W inverter charger

60A 1200W

100A 2000W

100A 2500W

200A 3750W

The smallest in the range, this sophisticated combi unit will charge at 60A and will provide 1200W of 240V power.
2 models available



Mastervolt Mass Sine inverter remote on/off switch

Remote on/off

ICC panel

A simple remote on/off switch for Mastervolt Mass Sine inverters
3 models available



Battery to inverter wiring harness (up to 60 amp)

60 amp

80 amp

125 amp

Battery wiring harness for inverters up to 60 amp. 16mm2 cables complete with ring terminals and inline fuse. Ideal for Cotek SK600.


solar panels
Framed panels
Framed polycrystalline silicon solar panels. Great for a wide variety of uses.
Framed panels - large
Larger framed silicon solar panels - for more power hungry installations.
Semi-flexible panels
3 ranges of low-profile, marine-grade panels designed with the yachtsman in mind. Great range of sizes from 5W to 70W.
Flexible panels
Ideal on boats, or expeditions!
Peel 'n' stick panels
Flexible thin-film solar panels with an adhesive backing.
Solar panel kits
A range of framed, laminate and semi-flexible solar panel kits complete with solar regulator, cables and connectors.
Grid-connect PV

On the grid

With payments from the feed-in tariff, installing solar panels on a roof makes sense financially as well as economically. Our local installation team would be delighted to quote for an installation. Please see our dedicated website for solar panels in Cambridge:

We work with other solar panel installers outside of Cambridge too. If you would like competitive quotes for a solar PV installation outside of East Anglia, please visit

Solar Regulators
The world leaders in PWM solar regulators.
MPPT Solar Regulators
Get more power from your panels.
wind turbines
Leading Edge
Bombproof and British.
Rutland Turbines
Small, economical wind turbines, ideal for battery charging on yachts.
Forgen Turbines
Reliable vertical axis turbines - great for remote power solutions.
Fluorescent lights
Efficient fluorescent lighting from Labcraft for boats and caravans.
LED lights
Stylish efficient lighting with new LED technology.
Modified sine inverters
A range of 12V-240V inverters providing great value for money.
Sine wave inverters
Sophisticated sine wave inverters for improved versatility and reliability.
Great value maintenance-free leisure batteries - ideal for boats and caravans
Haze Gel batteries
High-spec zero- maintenance gel batteries at great prices
Rolls Solar
A full range of these robust top-end solar batteries is now available
Crown Renewable
Diverse range of high quality solar batteries
Mastervolt chargers
Very high-spec chargers suitable for marine use
Chargers and accessories
Battery terminals, chargers, split charging devices and more.
odds & ends
Meters & Monitors
Keep an eye on your battery bank's state of charge with these meters and battery monitors.
Cable & Connectors
All the connectors you need, and high-grade cable to finish off your system
Solar Panel Mounts
Versatile mounting solutions to secure solar panels to poles and roofs
Keep an eye on this page for the latest bargains.
Off-grid power
Complete power systems for properties with no grid connection
Bespoke Solutions
We design and build remote power systems to fit your needs and budget
Trade customers
We offer great discounts for trade customers placing multiple orders. Please contact us for more information