A random question about 12volt batteries.

[Da_Big_Jeff]

I am looking to build a portable power source to power a few electrical items whilst away from mains power. I am having a look into building it around a caravan or Leisure deep cycle battery and mounting it, the relivant output sockets(mostly cigar lighter), an input soket for an external mains charging unit and a simple charge and level indicator into a flight case.

Thing is, it is going to be lugged around a lot between uses so I came to ask about this. Can standard 'wet' batteries handle being sloshed about and being side ways for an evening every now and then, whilst not being used? Sealed, leakproof batteries are probably the safest bet for this purpose, but I am still unsure about the battery being safe on its side or even unside down. Then there are gel filled batteries .

Any more advice on handling these batteries such as saftey(acid, fire, electricity spring to mind) and maintaining one is also appreciated.

 

[Da_Big_Jeff]

The size I am looking at is more in the size of a car battery. Going to need to bassically power a laptop and periferals for upto 8 hours a time in one location then packed up and taken home in the car to charge in the garage.

If i were to use the appropriate external power packs for everything it would mean carrying 3 units and wiring them up and still going through atleast 20 longlife a batteries every time.

Something like these:
http://www.batterymegastore.co.uk/cgi-bin/megastore/commerce.cgi?product=Batteries_Caravan!Sealed_Deep_Cycle

So it really means casing it up and using a trolly for it and the rest of the gear.