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.
