i'm bumping this because the Black Diamond Spot i picked up last year has been so handy for many different things. i just washed my car outside at midnight using this thing. the light it puts out is pretty crazy when filled with great batteries.
pay attention to the battery indicator light...and don't expect the included Energizer alkalines to last very long. once they start to wear, the spot will show a drastic performance reductions. if you are picking it up from Amazon, try to find a solid deal on Energizer Ultimate Lithium AAAs. i use those and the AAs in everything. they are light and last forever, providing great power along the way. in this lamp, they are the ticket. full power for a LONG time.
most rechargeables nowadays are nimh and they lose power whilst stored. the lithiums do not. so, while they aren't rechargeable, the life you'll get with them is well worth it.