Costco 6V battery charge rate

Thanks for these responses. It seems that majority of you recommended reducing 14.8 to 14.6V or lower.

Handy Bob said:

Handy Bob wrote:
"For the sake of simplicity, I am only going to talk about the requirements of standard flooded wet cell lead acid batteries, which is what most of us use. The major points apply to all types of batteries, but the actual numbers will vary. It is very important for you to research the charging requirements of your batteries if you are using any other type and make sure that your charging system provides what they need, or you could end up damaging them by over charging or never getting them fully charged, which will also damage them. Battery manufacturer’s specifications say that a standard 12 volt wet cell battery needs to be charged to between 14.4 to 14.8V and then held there for some time before it will be fully charged. The Trojan Battery company says 14.8V daily charge (at 77 degrees F) and Interstate will tell you over 15V. Trojan’s 2010 Users Guide has a new chart that shows you should actually vary the voltage depending on the amps you supply for charging and even higher voltages are recommended. Of course they recommend temperature regulation. So all of those out there who are telling you 14.8V is too high do not know what they are talking about."

handy bob

Also from Jack Dan Mayer

JackDanMayer wrote:
"Note: almost all in-built battery charge algorithms for flooded cell batteries specify 14.4 volts as the bulk set point. For most flooded cell batteries that is not enough to fully charge them. I always set the bulk charge for 14.8 volts, as recommended by Trojan, and others. Always use your battery manufacturer recommendation, but if you do not have one, I would use 14.8 volts."

JackDanMayer

TriStar 60 PWM manual
here is the manual.

That is why I had set it at 14.8V because I could NOT find any battery manufacturer website for this COSTCO 6V golf cart battery. I turn to the most logical site I could think of to answer my question.

Is it bad idea to have a 1 year old healthy single 12V deep cycle (80Ah) hooked up to the charge circuit with these two new 6V batteries?

Maybe I should reduce the charge from 14.8 to 14.6V ??? I set the equalizer to automatic mode which I think occurs every 28 days.

Once again, I appreciate very much your collective opinions and combined experiences.

Chuck