My wonderful wife bought me the new Streamlight Double Clutch head lamp. For run of the mill head lamps Streamlight has really good offerings. Our local Bimart used to carry a $13 3x AAA headlamp. I purchased quite a few of these to stash in backpacks and give to the kids.
There are two features the Double Clutch has that makes it unique: rechargeable lithium polymer (lipo) that uses a micro USB port to charge, and the ability to remove that battery and use straight AAA’s. Just for kicks I pulled out one of my Poweradd 7 watt solar panels and topped up the battery. There is a red/green LED in the lipo battery that tells you if the battery is charging or full. It took about three hours for the battery to register fully charged-I don’t know what the state of the battery was upon arrival.