Philo in SDwrote a question about CamelBak All Clear Microbiological UV Water Purifier - .75L on May 22, 2013
I was interested in buying this bottle but was turned off by the need for the CR123 batteries. I have made the switch to rechargeable batteries and have a good setup for AA and AAA. Last thing I need is another battery type, especially one so expensive and not readily available. Camelback take note! I'll make the leap once you get away from needing 6 volts to run the UV light and can use rechargeable AA or AAA. Hey 3 AAA are 4.5 volts and almost the same size as 2 CR123s.