regarding battery issue - predator has a mini switch from the the back cover side. while its open - it will start on AC power only. check your board - it may have the same switch.
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regarding your cable - google which cable 4k model should use and buy the exact cable which fits your model.
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regarding your display - the chance its a broken EDID is very low. also it was impossible to reflash that with i2c tools like its usually possible (its possible to read but not to write it) so I had to take it to a good service in my city (I was not able to find a proper one from the first attempt - some people do not realize EDP has no direct connection to EDID EEPROM and it took some time to find a guy who had a service manual access and an appropriate tool to do that).
regarding battery issue - predator has a mini switch at the back cover. while its open - it will start on AC power only. check your board - it may have the same switch.
+
regarding battery issue - predator has a mini switch from the the back cover side. while its open - it will start on AC power only. check your board - it may have the same switch.
regarding battery issue - predator has a mini switch at the back cover. while its open - it will start on AC power only. check your board - it may have the same switch.