As Nokia E7 and Nokia N8 owners are well aware, all those high-powered smartphone features can eat up your battery life all too quickly. Fortunately, with a few simple tips you can extend your battery life and get more from each charge.

Many owners of Nokia's top-of-the-range Nokia E7 and Nokia N8 have commented that in an ideal world they'd like more battery life from their Symbian^3 devices.

In part that's due to the sheer choice of features on board, as each one of them requires power to work its magic. But all the same, extra battery life is something very few mobile phone users would say no to.

The good news, then, is that there are all kinds of steps you can take on the Nokia E7 and Nokia N8 to maximise your battery life and squeeze more from each charge.

In fact, our friends over at All About Symbian have come up with a full dozen in all, each of which will make a significant difference to your Nokia smartphone's battery life. Putting all 12 into practice could as much as double your battery life, which is an astounding result.

So what sort of things are we looking at? Well, some are obvious, such as making sure the phone is charged to the absolute maximum before detaching from the mains, and not leaving unnecessary apps running in the background.

But there are others you probably didn't know about. Were you aware, for instance, that a colour scheme involving a black background with white text uses up to 15 times less power than a white background with black or blue text?

There are plenty other tips and tricks beside, and for the full list, as well as how to implement them, the All About Symbian piece certainly makes a good read.

Do you have a few power-saving tips of your own that the piece doesn't cover? Let us know in the Comments!