Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: - How long does the battery in this laptop last while watching movies?
Document: turned 2 10 footers into a 20 and now can reach to my tv - just love watching movies with it
It Works flawlessly to connect two of my hdmi cords to make the length long enough to reach my laptop from my tv.
Now I can hock 2 long 50 foot HDMI cables together from my office to the living room TV.Now we can play movies from my P/C to the TV. The price for the Coupler was just a few bucks including shipping.
It took 2 25' HDMI cables to get from my entertainment center , to my Laptop (Couch), and this little do dad , did the trick.
Connects my mini hdmi to hdmi cable to the hdmi to vga adapter cable. I am watching my tablet on my projector. Which was the plan. Yes.
This product assisted me with the connection from my laptop computer to my big screen tv. I had two HDMI cables that wouldn't reach my tv from where I was using the laptop, so instead of purchasing a longer HDMI cable...I chose to purchase this coupler so I could utilize the two cables I own to make the reach to the tv and it did the job after receiving it in the mail. Works great, no picture quality lost plus got to utilize my other cables I had bought.
it does what it says it does.. connects 2 hdmi cables which saved me from buying a super long hdmi cable
I am using this to connect 25ft and 15ft cables and it works great. Just don't go too long with your cables.
Does it work fine for what it was designed. I use it to inter-connect HDMI cables that aren't long enough.
anybody with long cabling requirements this is exceptional as it is so easy to connect love it and have told friends aboutthis product and they will be ordering
Answer: Must be some confusion here. This was an HDMI cable connector/extender that cost less than $2. For that purpose, it was perfect. No laptop, no battery.