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When used with MSG_GET, return the percentage of battery power level on camera. If -1 is returned, it indicates that the battery is not present.
This is a read only capability.
Use this capability with MSG_GET to indicate to the user about the battery power status. It is recommended to use CAP_POWERSUPPLY to identify the power source first.
-2 indicates that the available power is infinite.
-1 indicates that the device cannot report the remaining battery power. 0 to 100 indicates the percentage of battery life remaining. Type: TW_INT
Allowed Values: -2, -1, 0 to 100.
MSG_GET TW_ONEVALUE MSG_GETCURRENT TW_ONEVALUE MSG_GETDEFAULT TW_ONEVALUE MSG_SET Not Allowed
MSG_SETCONSTRAINT Not Allowed MSG_RESET Not Allowed MSG_QUERYSUPPORT TW_ONEVALUE
None. Highly recommended for digital cameras that are equipped with batteries.
Version 1.8
CAP_BATTERYMINUTES CAP_POWERSUPPLY
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