Battery types and quality for P38

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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!
 
Dopey said:
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!
Click to expand...

Sorry Dopey, but you're living up to your name. :p

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...
 
DomEllis said:
Sorry Dopey, but you're living up to your name. :p

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...
Click to expand...

sounds like zider fightin talk to me
:brick::frusty::boxing:
 
Leisure batteries are designed for providing a smallish steady current over a long period, and are capable of being pretty well discharged before rechargng again. They're often described as being Deep Cycle batteries.

Car starting batteries are intended to provide a high current (several hundred amps) over a short period. They also prefer not to become too discharged before recharging.

Although the Lead/Acid chemistry is pretty much the same, the way in which the lead plates are arranged inside the battery vary between the two types to give them the characteristics needed for their designed use.

Using a leisure battery on a car to start it will probably buckle the plates inside the battery rendering it FUBAR.

There you go
 
Sorry mate, but I'm not going to let this lie. Surely boat engines need starting... And the battery I've suggested has a CCA rating of 800, that's more than most car batteries.
 
Energy SFL - Semi-sealed Leak-resistant Dual Purpose 12V Batteries at best prices.




Part No: Type Incl Add to Basket

AB702 85Ah Squadron Energy SFL Battery. 500CCA 19kg LxWxH 255x172x225 mm £64.95

AB704 100Ah Squadron Energy SFL Battery. 600CCA 20½kg LxWxH 255x172x225 mm £73.95

AB705 110Ah Squadron Energy SFL Battery. 700CCA 27kg LxWxH 315x172x230 mm £91.50

AB706 120Ah Squadron Energy SFL Battery. 700CCA 30kg LxWxH 330x173x240 mm £101.50

AB708 140Ah Squadron Energy SFL Battery. 800CCA * 34kg LxWxH 504x180x228 mm £152.95

AB710 180Ah Squadron Energy SFL Battery. 1000CCA * 40kg LxWxH 507x220x228 mm £177.95

AB712 220Ah Squadron Energy SFL Battery. 1200CCA * 55kg LxWxH 505x264x235 mm £229.95

NB: Terminal layout is mostly L1 but batteries marked with an * are L3 with both terminals at one end
 
Last edited:
Ok so what would people recommend for a 4.0 V8?
The book says 72amh, currently there's a 70amh one in there but it's of unknown age and is having to be charged once every month.
I do short journeys every day only 5 or 6 miles each way to work and back again.
 
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