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Sony DSC-P8 Poor battery performance
I have a Sony DSC-P8 which is just under 3 years old.
The battery performance is very poor. When the battery is fully charged I can usual take around 30 to 40 pictures before the battery is dead and the camera shuts down. If I take pictures with the flash this is reduced to around 20 to 30 pictures. I have also noticed that the time to recharge the flash between photos is a long time. Sometimes it takes upto 10 seconds. I don't remember the camera doing this when I bought it. When the camera turns off I can usual turn it back on again, take a couple of pictures and then it turns off again. When I connect the charger the display comes up with around 25 minutes and then charges till it gets to 55mins. It seems the camera is shutting down when the battery is still half charged. Is this normal? I bought a spare battery on ebay last year (not a sony) and this shows the same behaviour as my existing Sony genuine battery. Is the camera faulty, or should I just buy a new Genuine Sony FC10 or FC11 battery? Cheers, Matt |
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Matthew Bailey wrote:
I have a Sony DSC-P8 which is just under 3 years old. The battery performance is very poor. When the battery is fully charged I can usual take around 30 to 40 pictures before the battery is dead and the camera shuts down. If I take pictures with the flash this is reduced to around 20 to 30 pictures. I have also noticed that the time to recharge the flash between photos is a long time. Sometimes it takes upto 10 seconds. I don't remember the camera doing this when I bought it. When the camera turns off I can usual turn it back on again, take a couple of pictures and then it turns off again. When I connect the charger the display comes up with around 25 minutes and then charges till it gets to 55mins. It seems the camera is shutting down when the battery is still half charged. Is this normal? I bought a spare battery on ebay last year (not a sony) and this shows the same behaviour as my existing Sony genuine battery. Is the camera faulty, or should I just buy a new Genuine Sony FC10 or FC11 battery? Similar thing here with DSC-F505 and NP-FS11. First of all Li-Ion batteries seem to degrade much faster over time than NiCd/NiMH, and it doesn't make much of a difference if they are used or just sitting in a drawer. After doing quite some measurements on my several NP-FS11 I came to the conclusion that Sony's infoLithium system (at least as it is implemented in the NP-FS11) is real bad. When discharging the fully charged battery all the way down to 3.0V outside my camera (using my battery test equipment) it delivers its rated capacity, but when using it in my F505 it shows the same effects you describe. Possible solutions (sometimes they work, sometimes not): (1) Clean electrical contacts on both camera and battery. (2) Exercise the battery over several cycles (discharge over a resistor. Internal circuitry will prevent over-discharge) to make infoLithium "learn" what the available capacity is. I took these consequences: (1) Use a single Li-Ion battery, and use it regularly. (2) Never again buy a camera which doesn't accept AA cells. Check the "Sony Talk Forum" for more information: http://www.dpreview.com/forums/forum.asp?forum=1009 Markus |
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