XPost: aus.cars, aus.computers   
   From: peter2@hipson.net   
      
   On 10/29/2012 4:47 AM, Damian wrote:   
   > Hi guys,   
   > I would appreciate if I could get some advice on below question.   
   > I have two AGM deep cycle batteries(identical). Thye 6V batteries about   
   > 300ah each. I am hoping to connect they on series to get 12V.   
   > My question is that,   
   > Is it safe to charge the batteries connected as above with a single 12V   
   > charger without any damage to the batteries or the charger?!   
   > I am hoping the charger simply treat the two 6V batteries as a single 12V   
   > battery and charge they equally without any issues.   
   > Thank you for any advice.   
   >   
   >   
      
   If the batteries are the same yes, series will be fine. Most   
   applications (UPSs etc.) they are series and charged as a bank. Before   
   charging in series you must, however, ensure that each is identical in   
   capabilities (as well as specifications) and that each has an identical   
   level of charge.   
      
   Any charger to charge an AGM battery must be designed to charge those   
   types of batteries. You cannot use a generic charger, you need one with   
   an AGM setting.   
      
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