I watch Weather Nation and they have been having a commercial on rechargeable light-bulbs. Rechargeable light bulbs are expensive but interesting. This is a blurb from a write up on a different rechargeable light bulb. Self-Charging Light Bulbs : Rechargeable Light Bulbs I read a few articles and most say these rechargeable bulbs last for approximately 4 hours on a charge. Many of these bulbs now come with a portable socket so you can take it from the lamp and use it like a flashlight. The articles say it will work like a normal bulb when the power is out, just turn on the lamp and you will have light. Has anyone tried these bulbs? I rarely lose power but it would be a great gift for my folks back home who lose power quite often. YJY Rechargeable Emergency LED Light Bulb A19 Lamp, Still Work after Power Outage, 75W Equivalent 12W 6000K E27 E26 110V 120V 220V - 1 Pack - - Amazon.com **Rechargeable and Emergency** - Very special and intelligent LED bulb, there is a lithium battery included, the battery will be charged when you use the bulb daily, so when real power outage, battery will release energy for emergency lighting. **Intelligent and Convenient** - Electrostatic induction switch, the emergency system will start automatically several seconds later when real power outage, and you can turn off the bulb by your socket switch just like a normal household bulb, useful for outdoor camping and some industry area.