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Hi there and welcome to UKCS.

I'm sure without the TV the battery would last you a week easily, but not having used a 12V TV i could'nt say how much power they consume, If you use it conservatively i'm sure the battery will last the week.

Only one way to find out really. 

Hi break it down as follows:
each light will use 0.85 amps
Water pump 5amps say
TV/PS2 Perhaps 7 amps

So using the TV/PS2 constantly and nothing else you might get 100/7=14hrs of play.

The calculations are rough as when the battery starts to drain the appliances will suck even more power.  The calculation above with the telly doesn't allow for this.  it also assumes the battery is in peak condition.
If working it out myself i'd knock 25% off the time I think the battery is going to last to be on the safe side.

you also dont want to drain the battery dead. thats the best way to kill it. your tv should tell you what it uses look an the back to see. ie: 50W. hope that helps.

floppy

Before mains electrics were `invented` I used to have 2 batteries in my van and they lasted  a 2 week holiday.(running lights, water tap and tv) I assume that sites still do battery charging as well so if one runs out you can get it charged up.

Regards Robin

Quote: Originally posted by floppy01 on 05/7/2006

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you also dont want to drain the battery dead. thats the best way to kill it. your tv should tell you what it uses look an the back to see. ie: 50W. hope that helps.

floppy

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always wondered about this one as i read somewhere that every now and then battery should be totally discharged before recharge or it will develope a memory and think its flat when it isnt(no i wasnt drunk when i read it)...is this just for certain types of batterys ? anyone know