It would help if Petzl were a little more forthcoming about exactly what effect this has - a piece of lab research could be very different from the practical effect in the real world. For example if it shortens LED life by 5% or 10% if left on constantly then frankly, who cares? But if it reduces it by 50% when used in short bursts then I'd be more concerned.
As it is, I've used a variety of LED torches from Petzl and Black Diamond with lithium batteries for several years now and not encountered any issues, so I think I'll continue - I like the lithiums' light weight, cold weather performance, and longer life (especially when used with my LED/Halogen headtorch), and to be honest the rate LED technology is advancing by the time a torch packs up there's going to be something miles better to replace it with anyway!!
Edit: I may well take a look at Princeton Tec next time I'm in the market though - cheers Chris.
Posted: 20/09/2006 at 13:48