Using battery desk lamp can save you money, but not all will.
Most manufacturers of battery-operated lamps will include the products expected lifespan in the specifications or on the packaging. Use this information to help you determine whether one can save you money. Figure the average cost of a battery and the cost of running a standard household light. Take into account the cost of the bulb and the electricity used to power a lamp.
The most common designs of battery desk lamps use LED (light-emitting diode) bulbs, which use less electricity to produce brighter light than traditional bulbs. LED bulbs have significantly longer projected lightspans than normal bulbs.
Some models of battery lamps also include standard plugs for normal operation with a wall jack. These types can be used the standard way (plugged in) and serve as emergency or backup light (by battery) in the case of a power outage.
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