Generics and house brand CR123s vary a lot and UV gizmos have high current requirements, so need the best for long battery life. Read flashlight forums for brand-specific testing results (their nerd: non-nerd ratios are usually quite high).

Certain Steripens have farily high battery drain when idle, so I always ensure the circuit is open when stowing.

Cheers,

Rick

Originally Posted By skcreidc
I've had good experiences myself, but always get the quality Li batteries. Sounds like you have enough experience with the thing to avoid user error issues.
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--Rick