The manual for my P67 1997 vintage doesn't mention lithium batteries, e.g. Duracell PX28L. I ahve a similiar problem with my Canon T90s - both Canon UK and independent repairers advise against because intial voltage greater than nominal 1.5v can damage circuits.Is anyone aware of similiar problem with P67? If so, is silver oxide best bet for low temperatures use. BTW, has anyone noticed that with the P67 on a tripod, it is impossible to use the external battrey cord?(posted 8954 days ago)