12v 100Ah AGM Batteries (Photonic Universe) - Charge settings?

owen_a

Hi,

I have 2x 12v 100Ah AGM batteries from Photonic Universe connected in series and I'm curious as to what I need to set my TS-MPPT-60A charge controllers dip switches to in order to set the controller to charge the batteries properly. According to the manual, the charging voltage qhwn the battery is being charged/discharged frequently, is about 14.1v-14.4v, whereas when they're for emergency power for example, It's stated to charge them at 13.6v-13.8v.

I'm just curious as to what the Absorption Voltage, Equalize Voltage (If you do equalize AGM?) and Float voltage should be set to.

My TS-MPPT-60A charge controller has dip switches that can be set according to which batteries you have. This is the table I'm given. Which one should I use? And if non apply, which voltages should I set the controller to via the custom settings? Currently I have it set to the third row down (before AGM/Flooded).

Thanks,
Owen

westbranch

Here is a link to another makers charge regime recommendations,  enjoy....http://www.cdtechno.com/pdf/ref/41_2128_0212.pdf

owen_a

Thanks for your reply!

I just received a message from the seller and they state the following settings;

Absorption charging voltage: 14.1-14.4V
Equalisation voltage: 14.3-14.4V
Float voltage: 13.6V - 13.8V

Hope it helps anyone else with the same query!

Also, is it ok using the batteries 24/7 for powering my inverter thus the batteries being charged when needed and discharged? Or would it be better using them when needed? I have a server that would be ideal to run off grid especially if there is an outage. Its also very efficient, only consuming about 2.75A (without inverter current usage).

Thanks,
Owen

BB.

Batteries both age from cycling (charging/discharging cycles) and from simple aging (for every 10C increase in battery temperature, ~1/2 life is lost).

For typical UPS applications, the smaller batteries are replaced every 1-2 years... For larger AGMs, perhaps they will last 5 years or a bit longer.

If you need protection against outages (work/data preservation)--Use the batteries and just plan on replacing them X years out. And if you don't use them all of the time, perhaps X+a couple of years longer (assuming they are kept properly charged).

-Bill