What ledstrips? Please post a link.Please post a complete diagram including how everything is powered. If your ledstrips have roughly more than 10 leds per colour and you drive them directly from the arduino, that is more than likely your problem.
Focus in on and attach a good image of the actual Arduino/Transistor/strip wiring..
What are the values of the base resistors..
Voltage reading from video above show 11.09 - 11.18 volt. I would say that i negligible. My guess it is all about the load and battery specification.
It's a led strip (RGB). The green is on pin 44