It goes without saying: You would never get rid of your cell phone simply because it requires electricity to charge its battery. But you might actually think twice about leaving the cell phone charger plugged in all the time, once you understand that doing that actually costs you money. Plug any electronic device into the Save a Watt Phantom Power Indicator, and you can easily see how much wattage it consumes while idle. It may not sound like much, but if you want to cut down your electricity bill, you first need to where dollars are being wasted. Available at Amazon; $24.99.