Voltage spikes can occur in the best-regulated environments, which is why a new surge protection product called SurgeStop should be on every mobile computer user's list of essentials.

Why do you need a surge protector?

Anything that interrupts or affects the continuous flow of normal power can cause a surge or voltage spike to be induced into the electrical system that supplies power to your notebook computer and peripheral devices.

Current overflows from power interferences such as lightning strikes, fluorescent lights, vacuum cleaners heating pumps and other appliances can cause data loss, or even damage the notebook hard drive, memory and motherboard.

All good reasons for spending a few quid on some protection.

The SurgeStop is a neat little unit, about the size of a matchbox. It weighs next to nothing and is fitted in-line, between the mains power source and the notebook computer.

Basically, it is a fuse that will blow if a surge or spike is experienced. Because it is fitted in-line, it stays with your computer equipment at all times and eliminates the need for bulky power strips.

A bright red light on the casing of the SurgeStop tells you when it is in use. If a minimal power surge hits your machine, the Surge Stop will trip and then reset itself for future use.

In the event of an extreme spike, the unit will sacrifice itself to protect your expensive computer. If the light on top goes out, it is time to replace the unit.

SurgeStop is suitable for use around the world with a working voltage of 110-240v AC and a power consumption of just 0.3 watts.

It can handle surges of up to 2500 amps which, at a lot less than £20, makes it one of the best investments a mobile-user could make. Just think about the cost of being without your notebook computer for a fortnight, let alone the potential data loss and massive repair bills.

Price: £11.99.

Contact: 020 8233 3000.

Feel good factor: 9 out of 10.