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Leisure Batterys

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4 landies:
 If they are running in series they will both be used to start the vehicle though or have I read it wrong

Mark_Solesbury:
They are connected together in series, only when the alternator is outputting 12volts, so they will only be in series when the engine is running.

When starting, they are not connected in anyway.

clbarclay:
Connected in series? That should give you 24volts

The double battery systems I've come across are all connected in parrallel. Here is a good link of lead acid batteries
http://www.vonwentzel.net/Battery/00.Glossary/


The main differeance between a 'leasure' and 'starting' lead acid battery is the thickness of the plates inside the cells. thinner plates allow a higher CCA (for starting and engine) but thicker plates last longer when discharged.


There are some people on here like dan (aka extreme90) who run twin 'leasure' batteries in parrallel, giving double the CCA of a single leasure battery to start the engine with all other benefits of leasure batteries, The are optima batteries mind and a yellow top (leasure version) has similare CCA performance to a typical lead acid car battery of the same capacity.

Mark_Solesbury:



--- Quote from: clbarclay on May 13, 2008, 18:43:28 ---Connected in series? That should give you 24volts

--- End quote ---

 :oops: :oops: :oops: :oops: :oops: :oops: :oops:

Parallel..   :doh:

Saffy:
I just got my leisure batt from the local motor factor - the biggest that fitted in with the standard battery that wasn't at a silly price. Do not think its much of a known brand but carries a 4 year warranty which it about the rate I replace batteries at anyway.

While out laning on Sunday the leisure battery went flat (~11.9 volts) and even though engine was running my aux equipment wasn't get enough power from the alternator. Turned out the big solenoid I was using the dual charge was losing 2volts across the contacts. Opened it up to find quite a bit if mud and pitted contacts. Have used a normal 30amp aux relay and wiring for the dual charge now. There is no need for heavy cabling on a dual charge unless used for winch or a setup where you may want to switch cranking battery without swapping cables.

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