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Marine deep cycle battery charging question

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rig(at)q.com
Guest

Posted: Wed Dec 24, 2014 4:49 pm Post subject: Marine deep cycle battery charging question

Hello listers,



I have four 12volt RV/Marine deep cycle batteries that I need to trickle charge over the winter.  Can I just connect them in parallel and use a trickle charger ?



After reading the aero connection and considering when they are installed they are in parallel and being charged by the alternator.  I would think I could trickle charge them this way.  But sometimes I miss the subtleties of electrons 



Thanks 



Dave

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yellowduckduo(at)gmail.co
Guest

Posted: Thu Dec 25, 2014 5:54 am Post subject: Marine deep cycle battery charging question

Hi Dave

I would parallel them but I'd make sure that the voltage levels off 

around 13.8 volts over the first few weeks.

Most maintainers will do that. Older trickle chargers often go too high 

for continuous charging and optimum battery life.

Bob has posted lots of data on the ideal voltage over the years and 

might have a better value than 13.8.

Ken



On 24/12/2014 7:47 PM, Dave wrote:

 	  Quote: 	
		   



 Hello listers,



 I have four 12volt RV/Marine deep cycle batteries that I need to trickle charge over the winter.  Can I just connect them in parallel and use a trickle charger ?



 After reading the aero connection and considering when they are installed they are in parallel and being charged by the alternator.  I would think I could trickle charge them this way.  But sometimes I miss the subtleties of electrons



 Thanks



 Dave

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jimkale(at)roadrunner.com
Guest

Posted: Thu Dec 25, 2014 4:57 pm Post subject: Marine deep cycle battery charging question

Constant trickle charging without a float charger is not wise.    I suggest a BATTERY MINDER they have a 1.5 amp model for about 50 bucks, I believe it may be connected to batteries in parallel. However it will only  maintain them.  Such a small charger will not recharge them if they are in a discharged state.  It will not over charge and also gives it a shot of high frequency energy once each 5 seconds or so; which will keep lead sulfate from forming on the plates.  Sulfate is what eventually kills most lead acid batteries.   The 1.5 amp model is ideal for long term storage without harming a lead acid battery.

Jim

---- C&K <yellowduckduo(at)gmail.com> wrote: 

 	  Quote: 	

 Hi Dave

 I would parallel them but I'd make sure that the voltage levels off 

 around 13.8 volts over the first few weeks.

 Most maintainers will do that. Older trickle chargers often go too high 

 for continuous charging and optimum battery life.

 Bob has posted lots of data on the ideal voltage over the years and 

 might have a better value than 13.8.

 Ken

 On 24/12/2014 7:47 PM, Dave wrote:

 > 

 >

 > Hello listers,

 >

 > I have four 12volt RV/Marine deep cycle batteries that I need to trickle charge over the winter.  Can I just connect them in parallel and use a trickle charger ?

 >

 > After reading the aero connection and considering when they are installed they are in parallel and being charged by the alternator.  I would think I could trickle charge them this way.  But sometimes I miss the subtleties of electrons

 >

 > Thanks

 >

 > Dave

 >

 >

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