Finnish mobile giant Nokia is playing the green card this week, with a trio of devices that remind the user to unplug the phone charger once the battery is full.

The technology will first appear in the Nokia 1200, 1208 and 1650 but will also be rolled out across the whole product range.

The company claims the initiative could save enough electricity to power 85,000 homes a year, although we have no idea what this stat is based on.

The three energy saving phones in question are being targeted for high volume sales in fast growing markets like India, China and Latin America. However, it is developed markets like the US and the UK that are the biggest culprits for energy wastage.

But rather than putting the guilt trip on its customers, Nokia’s announcement begs the question as to why some kind of feature cannot be added to the charging unit to automatically switch it off when the battery is full?

Perhaps such a system is not possible, as Nokia has set goals to have reduced the amount of electricity a charger consumes whilst still plugged into the mains but not the phone by an additional 50 per cent by 2010.

In fairness, the company’s newest range of chargers were have been awarded an Energy Star by the Environmental Protection Agency (EPA) in the US.