Need Help with Charge Controller Settings..

Coach Dad

I have 4 Sun-Extender AGM batteries. They are 6 volt 305 AH each. They will be wired in Series to give me 24 volts 305 AH. The manual indicates that the
Absorbtion Voltage should be between 28.4V to 28.8 V
Float Voltage should be between 26.4 to 26.8V
Equalize voltage should be 31 V

I have a Tri-Star MPPT 60 Amp Charge Controller (TSMPPT60) which I’m getting ready to install. But the setting listed in the Tri-Star manual don’t match the Battery requirements.
This is the table from the Tri-Star Manual. (see attached)
If I multiply these by 2 none of them match… Which settings should I use???

westbranch

Re: Need Help with Charge Controller Settings..

Not much help but as a start I would contact both manufacturers to see what they recommend

BB.

Re: Need Help with Charge Controller Settings..

2, 3, or 4 would be fine... And I think you can set manual equalization (once every 6 months?).

If you are lightly cycling the battery bank and hit float early in the day, choose #2. If you cycle the batteries heavy, andwinter use, pick 3 or 4 to charge quicker and higher current.

Of course, there is buying the dongle and programing your own settings.

I am not sure I would realize with 31 volts unless I was having low battery capacity issues... But I am not a battery engineer.

-Bill