123-related question.

[maxa beam]

I read something a while ago that said you're not supposed to run lithiums down completely because of voltage sag and it's bad for the light or something.

Any truth in this?

 

[greenLED]

Could you be confusing lithium primaries and unprotected lithium-ion rechargeables? If you overdischarge the latter, you'll damage the cells. Primary lithiums don't sag much compared to alkalines, for example.

As far as harming the light itself... :thinking: ...only if the batteries are giving higher voltage than the circuit (or bulb) can handle.

 

[maxa beam]

Ah, thanks for clearing that up.