I recently bought a Steripen water purification device. It runs on CR 123s. In fact most of my out door gear runs on CR 123s. Now, in order to be efficient with space I wanted to ditch the solar charger for CR 123s that the Steripen comes with, but I have not been able to find anything on the internet that allows the solar charging of rechargeable CR 123s. Sure, there are tons for AA and AAA batteries but 'nothing' for CR 123s. Anyone have advice or a solution for this?