Jueal15 said:
Is it worth having a 12 volt tv, when we are not planning to be on a site without electric, and do you use that facility. Can we just buy a normal tv ? is it worth the extra cost of being a 12/24 volt ?
Each to their own. It doesn't matter if others choose to watch TV or not , its about what you want to do.
If when you say a normal tv, if you are referring to one that runs on 230V ac mains, then you would need a 12vdc to 230vac inverter to use it when there is no mains power available, and a good inverter ( Full sine wave not modified or quasi sine wave) is not cheap nor the most efficient..
As you will always have 12V dc whether you are on a hook up or not, it may make sense to look for a 12V television. Several of the smaller sets these days are 12V input, and they use an in line power adapter to bring 230V ac down to 12V dc. Some of these sets you can use straight from 12V dc in a caravan.
From a practical point of view, whilst a small LED tv these days will be rated in the order of about 40W power consumption, that would be a draw of almost 4A from your 12V system. As you tend to use TV's for extended periods, that will put quite a demand on the battery, and without a mains hook up to recharge it you won't get a lot of viewing.
It may be worth trying some alternative types of entertainment for when the battery's flat and your sitting in a very gloomy caravan.