They draw power from the car, so they do not use batteries.
The battery life of a wireless dvd player really depends on the brand, make and model of your dvd player. The battery life generally ranges from 1 - 5 hours though.
The battery life on a sony portable DVD player really all depends on the size of it. It also depends on how you use the player. But average hours of a battery for a DVD player that is fully charged would be between eight and twelve hours.
The Sony DVP FX930 has outstanding battery life.
The average battery life of the Venturer 8" portable DVD player is said to be about 2-3 hours, but some people have complained about only getting an hour or less out of it.
Battery life for an average Sony portable DVD player is about 4 hours. It looks little bit like a notebook but only for playing DVDs so , id say that the device is quite pointless. And yes, you can plug in.
The battery life of an LG portable DVD player solely depends on what type of batteries you are using for your LG portable DVD player. When that information is found out, you will be able to get a better answer to the question.
It will drain the battery in the short term,but in the long term battery life really isn't effected.
The battery life of a sony portable DVD player is 7.5 hours before it needs to be charged. The average life expectancy of this DVD player is 2 to 3 years with heavy use. With lighter use and care to not drop or damage it, some of these players last slightly longer.
Starge wired to battery
The Venturer PVS3368 Portable DVD Player has a car adaptor and also has a rechargeable battery system.
Putting a DVD player in your car will have a mild, but unsubstantial effect on your battery's voltage output.
Panasonic have the longest warranties available.