Cars need lots of current (Amps) to turn the starter motor.
Leisure batteries can't provide the amps.
Car batteries have a CCA ( Cold Crank Amps - I think ) rating. This gives an idea about how much current they can provide to turn over the engine.
Leisure batteries can often provide reasonable current - enough for winches, etc. But if you use them to start an engine, they can overheat. This can damage the battery, or in serious cases, cause it to explode!
Sorry Dopey, but you're living up to your name.
First off, don't boats and motorhomes have cuffing great doisel engines? They need crankin' don't they?
And check out the stats... I tink (it's late, I've been on the zoidur and I canna remember hexactly) that I got the XV24 Marine/Leisure battery. 800CCA, that's 'kin plenty. Don't think it'll explode on me, but I'll post pics if it does.
I still maintain that these offer really good value and bloody good specs. But shoot me dahn if you want to...
I shot him (and missed) i will get a professional marksman out to him next time
so how much is that 800 CCA marine battery ?
AB702 85Ah Squadron Energy SFL Battery. 500CCA 19kg LxWxH 255x172x225 mm £64.95