Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: How many hours does the battery last?
Document: I have owned many portable DVD players. I commute over 1 hour and a half (one way), so I end up watching a lot of movies on the train. Most players last me 3 or 4 years before breaking (due to high usage). This particular player is one of the worst ones that I have ever owned. After I intially bought it and brought it home, the remote control broke within 4 weeks. I replaced the battery thinking that it was the battery, but the remote just would not work.
Picture is clear. Wish battery lasted longer than 2 1/2 hours. I would recommend this product to someone looking for inexpensive DVD player.
Inexpensive and simple for the kids. Can save me from going insane on airplanes. I love that the battery last long enough for 2 or 3 movies. Able to have a head seat and is light enough for them to carry in a backpack. I have three right now and cannot complain.
DO NOT BUY THIS PRODUCT -- Battery died after one month.Purchased this product in late July 2011 (yes, just last month) to make occasional flights and car trips with my son a little easier. It worked well enough when we first purchased it. Picture quality was decent (especially given the quite affordable price point), and it held up quite well through that first trip that we bought it for. We also charged it the way the instructions told us to. During out last trip (in mid-August), the battery life started to dwindle, and get shorter and shorter...AND NOW THE BATTERY IS ESSENTIALLY DEAD.
I'm really loving this dvd player!! !.The picture quality is crystal clear, color is very true to life, and even though I'm not in need of a new flat screen, When I purchase the next one I'm going to check sylvania for 36 inch or larger. The sound doesn't have base(bass) but it's still o.k. to listen to music and I like a lot of motivational speaking material so it's perfect for my needs. If you have older movies or cd's if you clean them off this player seems to work well on all cd's even if there are some light scratches.I'm hoping this will last for several years unlike most of the cd players that you buy nowdays-- not reliable and many of them will not play even unscratched straight from the factory cd's ?.-Oh well I'm happy I found this so all is well.Good price too.
I've only used this a few times since I've received it, but haven't encountered any problems. I purchased this item after reading so many positive reviews.
Easy to operate and small enough to fit anywhere. I am pleased with the quality and think it will last quite awhile even though it was purchased for travel and expected to take some abuse from being toted around so much.
It works very well. The resolution is not very high, but fairly good. Battery life is satisfactory. It is fine for its price
Battery only lasts for 45min after 24hr charge...not what I was expecting. You can't even watch a full dvd on it.
We watched one movie with no problems, took it out, put in a new dvd, and it did the exact same thing, would not recognize it. Put in the movie which we had just watched.. wouldn't recognize it. Tried again for the heck of it a few hours later... no luck. Although when it was working it was great, would not recommend this at all as it just suddely stops working for no reason and is definitely not reliable. Also, as a side note, we did not heavily use this at all, only occasionally for travelling, and my son was under constant supervision, it was not treated roughly at all!
Answer: About 3-4 hours