there are many many different types of battery chargers on the market today of widely varying sophistication and automation so I would say that its not quite as simple as that. Many actually stop charging completely when the charge light goes out, so even if you leave it "on" longer you are not getting any more charge.
For NIMH batteries, What I have settled on is two rate manually controlled self designed chargers, w/ fast and trickle charge rates. I use the fast/high current value @1/8C with a cutoff timer so I dont overcharge but I can set the total charge time to whatever I need depending on the mA Hour rating of the battery being charged. I then use the trickle charge setting/value @ about 1/40C but don't really do a typical trickle charge (always charging), I only trickle charge mine for only one hour a day via another 24 hour power timer. This method works well and doesnt stress the batteries and I have fully charged batteries always ready to go without leaving them charging all the time or having to keep recharging batteries that self discharged because they were not trickled or full charged recently. The only caveat, and it can be a big one, is that this method really only works well with batteries fully "used up" before fast charging again, if not sure or I know only a little discharge has occured, I just put on trickle for 24 hours continuous rather than use any fast charge to be safe and not overcharge the batteries. Works for me, your mileage may vary of course. jco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Godfrey DiGiorgi Sent: Tuesday, March 27, 2007 11:43 PM To: Pentax-Discuss Mail List Subject: Re: Battery life on K10D On Mar 27, 2007, at 7:10 PM, Markus Maurer wrote: > Is this third party charger only for the Pentax K10D accu or does > it work > with other accu brands as well? It's a CTA charger for the NP400 battery: here's a link to it on CompUPlus.com. http://tinyurl.com/38sag3 I usually stick the battery on charge and leave it sit on the power for a while after the charge light goes out. Typically, the charge light goes out when the battery has achieved 85-90% charge on most of these types of chargers. Godfrey -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
