Marine Electronics Forum - Battery / ACR question

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View Full Version : Battery / ACR question

03-27-2012, 10:30 PM
I was reading a post from firstbase and it said that you can't mix AGM and wetcell batteries.
Is this true?

I am getting a Blue Sea Add a Battery kit and was thinking about getting a AGM as my house battery and leaving one of my dekka dual purpose batteries as my starting battery.

Is this OK to do or would I need to change both to AGM?

The ACR keeps both separate unless I flip the switch if the starting battery can't crank the engine.

03-28-2012, 03:42 AM
An ACR will only keep them seperated if it senses a load on either battery. Once it senses a charge for a few minutes, it'll combine them. I'd stick with 2 of the same type batts but I'm no expert.

03-28-2012, 03:47 AM
I had a cranking on one circuit and a deep cell on the other when using the Blue Sea ACR / Add a battery kit and it worked fine.

Neither were AGM's, so that may be a ? for the Blue Sea technical folks themselves. They have a great support group and should be able to advise you as to what will work or not work.

The ACR works a little different than some of the other chargers out there, so you may be good to go. I'd check with Blue Sea and follow their recommendation(s).

Glen E
03-28-2012, 05:26 AM
batts can be diff sizes but must be the same type....all lead acid, all gel or all agm - no mix...

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