Here's a good link: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
There is an "overcharging effect", to quote the article. This is different from the the discharging effects in previous batteries. You shouldn't leave a computer plugged in all the time, but this is different from a complete discharge. No problem here with camera batteries. On Tue, Feb 22, 2011 at 2:31 PM, Paul Stenquist <[email protected]> wrote: > Interesting. Apple makes only general recommendations on laptop battery use > and recharging, at least that I know of. I believe they advise to use the > battery at least part of the time, rather than always relying on the power > cord. They do say that the batteries will lose capacity after approximately > 500 charge and discharge cycles, a condition I experienced. My K-7 batteries > seemed fine after around 300 cycles. I'm now using one of the two from the > k-7 in the k-5, along with a new battery. Don't know which is which anymore, > because I rotate them from the grip to the camera each time I charge. I've > never been able to get the battery indicator down to even the halfway mark, > although I've gone to about 1200 exposures before recharging a few times. I > have the camera set to draw equally from both batteries. If I have an > important job coming up, I recharge the batteries even if they're almost > fully charged. I did the same thing with the K-7, K20D and K10D. I have not > observed any negative consequences, although I did have one cheap third-party > battery fail completely in the K10D. > Paul > > > On Feb 22, 2011, at 1:53 PM, eckinator wrote: > >> I wonder if that is 100% true - my laptop batteries seem to live a lot >> longer if I always work off the battery and in turn charge with the >> computer off (advice from Lenovo as well as Toshiba) Of course this is >> with regard to permanent simultaneous trickle charging and depletion >> so that may be something different altogether. Does anyone know for a >> fact? >> Cheers >> Ecke >> >> 2011/2/22 Paul Stenquist <[email protected]>: >>> >>> On Feb 22, 2011, at 10:36 AM, Jack Davis wrote: >>> >>>> They really should be charged and discharges a couple times for them to >>>> take a "full" charge. Being impractical to do so, I understand the initial >>>> charge should take no more than 4 hours.(?) >>>> >>> >>> That's not necessary with lithium batteries. Just top them off and start >>> shooting. In fact, you can start shooting before they're fully charged if >>> you wish, and no damage will be done. >>> Paul >>> >>> >>>> Jack >>>> >>>> --- On Tue, 2/22/11, Krisjanis Linkevics >>>> <[email protected]> wrote: >>>> >>>>> From: Krisjanis Linkevics <[email protected]> >>>>> Subject: K-5 initial battery charge time? >>>>> To: "Pentax-Discuss Mail List" <[email protected]> >>>>> Date: Tuesday, February 22, 2011, 6:44 AM >>>>> I have finally gotten my hands on the >>>>> K-5 and nobody would every pry it out of my grip except the >>>>> blasted battery charger. As the work day is coming to an end >>>>> I have but one question before I run off with a wild smile >>>>> on my face - how long will that charger hold my battery >>>>> hostage? >>>>> >>>>> kris >>>>> >>>>> -- >>>>> 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. >>>>> >>>> >>>> >>>> >>>> >>>> -- >>>> 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. >>> >>> >>> -- >>> 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. >>> >> >> -- >> 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. > > > -- > 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. > -- Steve Desjardins -- 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.
