AA Lithium batteries

I use L91's in my digital camera, which is rather power hungry. Not sure what L39's are. L91's are 1.5V AA, and I think they are

To my environmental shame, I've given up on NiMH for my digital camera, as I could never seem to keep a spare set charged. I just buy Alkalines from Toys-R-Us, who do a seemingly perpetual 2 for 1 offer giving you 32AA for

Christian.

Hmm. Assuming reasonable discharge rates, have you any figures to prove this? I must admit to only using alkalines.

So have I, again to my shame, because they simply didn't last long enough.

I think that's a very important point. The display eats power.

Mary

I'm really surprised at this actually... I've run my camera (Canon Powershot A40) on NiMhs ever since I bought it. I always carry a spare set (4) of charged cells around, and never worry about how long the display is on for or how much I use the camera; if I have to change the cells during the day I can always guarantee there'll be more than enough juice available from the second set to last till I can get back to my charger that evening. (Only problem comes when I find the kids have raided my AA's to power their GameBoys again! cue sense-of-humour failure from pa...)

I guess it depends on how much you use the camera during the day, whether it auto-powers down (mine does), etc etc - but to be honest I've never felt that alkalines lasted any longer than a set of freshly charged NiMHs.

David

I've found that the cheap plug-in chargers don't charge NiMHs sufficiently. They use a timer rather than monitoring the state of charge of the cell. I charge them twice, giving them time to cool down in between.

New NiMHs also require half a dozen or so full charge/discharge cycles before they achieve full capacity.

Roger.

I've just switched from Minolta Dimage 7i which has a reputation of being a battery eater. (Not really justified IMHO) I used a variety of NiMh and fast Ansmann charger and had no problems.

I've never had a digital camera yet that didn't require a spare battery. Rarely did I have to use a 3rd set with the Dimage.

The current camera, a Canon EOS 10d came with a Li-ion battery which far out lasts the NiMhs in the Minolta. Though I still carry a spare, one fully charged battery will easily do me for a days shooting if not more.

I got the spare one from Germany via ebay. It was very reasonably priced compared to the pukka Canon job.

Paul Mc Cann

Ampere-hours far from tell you the whole story on the suitability of a particular battery - discharge rate - type of load (resistive or inductive "looking" and it will be the latter in a lot of consumumer products - DC to DC convertors etc) - constant current to constant power load ?

Have a look at some data sheets at:

Reply at foot.

Thanks for all the replies to my original message: I think I'll get a set of Lithium from 7DayShop (my favourite supplier anyhow) and see how they go in my Canon A40. As I understand it lithiums 'recover' a lot better when not in use. If they don't outlast Alkalines by a long way I'll look for a good NiMh charger. Hopefully the prices of the good ones will have come down by now.

mutley

Recently got one of their hama nimh chargers + 4x 2000mAh cells. Excellent for digicamera use. Can charge in car too.