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Subject: batteries

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Al    Posted 07-28-2019 at 16:02:11 [URL] [DELETE]        [Reply] [Email]  
  • batteries
  • Have a golf cart with 6 6v batteries that are dead want to replace with 3 12v problem is I only have room for 2 845 cc amp and 1 690 cc amp will this create a problem with charging system
    Thanks for any advice
    Al in Texas

    Al    Posted 08-07-2019 at 13:41:49 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • Followup on golf cart
    Installed 3 12v deep cycle batteries all is good not quit as fast but gets the job done
    Thanks to all,

    Al    Posted 07-30-2019 at 05:45:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • Thank you one and all for your advice going to go with 3 deep cycle 12v and see how it works out just use the cart to run around the place

    steveVa    Posted 07-29-2019 at 16:25:21 [URL] [DELETE]        [Reply] [No Email]  
  • Re: batteries
  • Al, all batteries should be the same size. Also you want deep cell batteries that are rated in AH amp hours. and not starting batteries rated in cca. Trojan 6 volt batteries are the best you can buy. if you maintain them you will never need to replace them again.

    Frank (WNY)    Posted 07-30-2019 at 05:17:07 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • Thanks Steve, I forgot to mention about using deep cycle for slow discharge applications. I particularly like AGM batteries. I use a 100 AH in the barn for lights and a fence charger with a solar charge system. They are safer than flooded cells and will tolerate a wider temperature range. They are a bit pricey though. Most batteries do not like discharging below a minimum voltage. For 12 volt a voltage below 11 volts will diminish the capacity and eventually kill the battery. My solar charge controller will shut off the load when the voltage reaches 11.5.

    Island Mike    Posted 07-29-2019 at 10:13:50 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • On my boat, I have 2 six volt batteries wyred to make 12 volts, and 1 12 volt starting battery. The smart unit that the alternator provides power to, figures out which unit needs charging. It recognizes the 2 six volts, as one 12 volt, and the starting battery as one unit.The two 6 volt batteries should be the same type and age.

    The shore power, 110 volts, also has a smart unit that does the same thing. Blue Sea makes these units.

    But for your golf cart, I think it will depend on what type of fancy unit is in the charging circuit you have, and whether they are all wyred as 12 volts.
    A search of Blue Sea charging distribution units should yield some results.

    Island Mike

    Frank (WNY)    Posted 07-29-2019 at 09:54:05 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • Hi Al,

    I am not familiar with golf carts. What is the configuration of the 6 volt battery cabling? Are they in series to provide 36 volts to the motor? or are they in parallel to provide 6 volts with a lot of current?

    Frank (WNY)    Posted 07-29-2019 at 10:09:50 [URL] [DELETE]        [Reply] [Email]  
  • Re: batteries
  • I did a bit of research and see that golf carts are wired in series. Using unequal batteries in series is not a good idea. If the lower capacity battery depletes first, then the larger capacity battery will be forced to charge it, but in reverse. this would damage the lower capacity battery and possibly cause it to boil over or worse vent large quantities of hydrogen. When replacing 6 volt or 12 volt batteries in series or parallel, they should be the same age and capacity. They should also be charged individually and measured to see that the voltages are close before installing.

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