On 30 Jan 2003 at 10:43, Bill Owens wrote: > I've thought about, but have been hesitant to try it. NiMh, I think, are > similar to NiCad in that they tend to deliver higher current. Plus, you'd > only be getting 5 volts with them instead of the 6 volts that alkalines or > lithiums provide. I've been happy with the results of AA alkalines, but > would like to try the AA lithiums sometime.
HiMH and NiCd cells will deliver higher current than Li or Alkali cells however since the supply voltage will be lower the current is not likely to be a problem, but performance may suffer due to the voltage drop. Since the Eveready AA Lithium/Iron Disulfide (Li/FeS2) cells can supply up to 1.6A if current were a problem it would already be so. The biggest difference aside from the much heavier weight of the rechargable cells is their self discharge parameters. NiMH cells are quite poor, most types will self discharge within two weeks, NiCd performance lies between the two but they need better maintenance. If your camera can lie idle for a week between shoots then the rates of battery self discharge can become a maintenance issue. Li cells have a shelf life of 10 years plus at 20 degrees C and Good alkali cells (Eveready E2) have a shelf life of about 7 years and a capacity of about 3135mAh (don't take too much notice of mAh ratings though). So you really have to consider your usage patterns before considering which battery types to use. BTW Li cells weigh 14.5g each whereas Alkali cells weigh in at around 24g each and a 1600mAh NiMH cell weighs ~26.75g. I have Li cells in my MZ-S, I use Ni-MH in my flashes and when I am out for the day with my digicam I pack three sets of 4 AA NiMH cells totalling ~320g :-( Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html
