Silverfox:
Are the BatteryStation 123's safe or not? They are among the cheapest batteries that I have seen (with the CPF discount), but they are only about $0.25 cheaper than Surefire batteries, which you categorize as "premium".

Has anybody measured the current and temperature of the premium cells as they are discharged? Perhaps they have a thermostat that disconnects the battery as it overheats.