More Battery type ?????s

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rvrrat

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Joined
Apr 12, 2005
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25
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so cal
Alrighty, now that I installed two 6v batteries in series, I need to keep them fully charged. I was informed the proper way is to use a 3 stage charger. Now, here it comes.... since the batteries are producing 12v (2 6v) do I use a 12v charger or do I use 2 6v chargers or can I use one 6v and will it charge both equally?  I know some of you  guys are electronics wizzkids (not like our teenager type though)...thanks...Paul
 

Ron

Moderator Emeritus
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Jan 29, 2005
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Home is where we park it
Paul,

You have two six volt batteries connected in series to get twelve volts you need a one 12 volt charger connected to the Positive post on one battery and the negative post on the other battery.
 

Gary RV_Wizard

Site Team
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Feb 2, 2005
Posts
74,584
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At our Silver Springs FL home
New electronic two stage chargers do a pretty decent job, much better than the older ferror-magnetic types that were common until a couple years ago.  The electronics needed to properly regulate charging have become cheap.

Up to around 40 or 50A charge capacity. a two stage charger is not much different than 3 stage anyway, since it is already limited in its max charge rate and there is therefore little difference between the first two charging stages. As long as it has a good float (final) stage a two stage will do fine. A charger with 70-100 amp capacity will benefit more from multiple stages

Progressive Dynamics and Iota make excellent 2 stage chargers and they both ofer an add-on module to upgrade to 3-stage if desired.
 

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