One thing that Bluetooth handsfree kits have in common is that you need to replace batteries or charge them. That can be tedious, especially if you live in a state where hands free kits are required and yours goes dead while driving.

A company called Iqua has a new Bluetooth handsfree kit that promises to provide unlimited talk time called the Iqua VizorSUN. The device gets power from a solar panel on the back of the gadget. In optimal light conditions, the maker says it will work indefinitely.

The vast majority of laptop chargers on the market have one thing in common, no matter if the battery if fully charged or absolutely dead, they send the same amount of power to the system. The amount of power a notebook uses can be greatly reduced by eliminating vampire power sent to a system when the battery is full.

A company called iGo is set to debut a line of new chargers and devices at CES 2009 in a few weeks that promise to reduce power consumption by notebooks on the charger up to 80%. The iGo Laptop charger has built-in technology that reduces the power going to the laptop when the battery is fully charged.