BTW, this reminds me why I prefer to choose devices that use CR123A batteries. For one thing, they're cheaper! Oh, it might not seem that way at first blush- certainly if you buy your batteries at Wal-Mart they seem expensive. But anyone reading this obviously has access to the internet. I get my CR123A batteries online from many sources (Batteryjunction.com being a favorite). Generally I pay around $1 each for solid, good quality batteries and maybe $1.50 for the best available (IMOHO that's Panasonic). In contrast, the lower level Energizer Advanced cost me almost $8 for a 4 pack or around $2 each. The Energizer Ultimates are generally well over $2.50 a pop and I've had no luck getting them appreciably cheaper.