Derby, there's apparently a few 3V Lithium rechargables out there. These will be safe, the 3.6V ones won't.
-Adam On 12/28/07, Derby Chang <[EMAIL PROTECTED]> wrote: > Derby Chang wrote: > > Roman Melihhov wrote: > >> I'm using 2 CR-V3 Li rechargeables in my K100D Super and Albinar > >> cherger for 1 battery, so I charge them in sequence and they stay > >> charged when unused. That's one good thing about them. Although they > >> last longer too I'd noticed Li batteries tend to die fast when camera > >> indicate half the charge or less. Just my 2ยข... > >> > >> > >> > > > > Roman, > > > > I am pretty sure I remember Pentax recommending lithium rechargeables > > *not* be used in the *ist DS, and presumably that applies for all of > > the other AA-type cameras as well. They work, but the higher current > > output isn't healthy for the AF motor IIRC. > > > > Another vote for me for the Eneloops in my *ist DS, since I don't use > > it much. It is nice to know the charge will be there when I want to > > use it occasionally. > > > > D > > > > Checking my facts again, the Pentax manuals state which types of > batteries can be used (of which lithium rechargeables are not included). > Here is a pretty detailed explanation why, not from Pentax, but a very > clear nonetheless. > > "Now consider a 4.8-6V circuit divided into 1.2-1.5V, typical 4x AA, or > even 2x CR-V3 (Li-Mn). You'll probably be fine with slight variances in > your AA like 1.6V that even push it up to 6.4V total. Now consider using > 2x RCR-V3 (Li-Ion), which is chemically impossible of delivering > anything less than 6V, and has a nominal operation of 7.2V! That's 1.8V. > And if you take it off the charger, and it's not clamped, it could be as > over 8V high as 8.4V total, a whopping 2.1V divided!" > > http://thebs413.blogspot.com/2007/07/li-ion-is-not-lithium-eg-li-mn-li-fe.html > > D > > -- > [EMAIL PROTECTED] > http://members.iinet.net.au/~derbyc > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
