I'm trying to find a more accurate value for the battery min and max voltage.
My battery, when charged for 8 hours, reach 4.087 mvolts (but it is 18 months old). The camera stops working with 3.365 mvolts.
May I ask for a little help? Anybody with a newer battery please charge for 8 or more hours, put in the camera, take some shoots, turn off the camera, wait for 15 min, turn on again and take the battery voltage (alt/menu/OSD parameters/Battery/Show Batt voltage).
On chdk sd770is port the default value for min is 3.500 and for max is 4.100.