Maximum starting agm batteries

[frankz66]

Hi everyone, I wanted to know how to calculate the maximum start (maximum duration 5 seconds). Having an accumulation 48v 110 amps agm deepcycle

(4 12v 110 x4 ) , how do I calculate how much maximum peak energy I can withdraw without damaging the batteries?

 

[seneysolar]

Hi everyone, I wanted to know how to calculate the maximum start (maximum duration 5 seconds). Having an accumulation 48v 110 amps agm deepcycle

(4 12v 110 x4 ) , how do I calculate how much maximum peak energy I can withdraw without damaging the batteries?

The battery manufacturer needs to provide this. The 110ah rating is relative to a long duration discharge. They will give you max charging and discharging rates on the spec sheet.

Ultimately, the design of the battery effects cranking amps, that's why starting batteries are bad deep cycle batteries.

 

[kommando]

CCA is the measurement to find for cranking power, the higher the better. Normally a high CAA is not linked to deep cycle batteries.

 

[frankz66]

The battery manufacturer needs to provide this. The 110ah rating is relative to a long duration discharge. They will give you max charging and discharging rates on the spec sheet.

Ultimately, the design of the battery effects cranking amps, that's why starting batteries are bad deep cycle batteries.

 

[seneysolar]

Kalstart A = CCA = 810A
Having 4 in series does not change the amperage.

 

[frankz66]

Kalstart A = CCA = 810A
Having 4 in series does not change the amperage.

Thank you, so can a 1000 watt cue for 5 seconds be tolerated?

 

[seneysolar]

1000 watts is different.

1000w ÷48v = 20.8a

Make sure you are comparing and referencing the correct unit of measurement

 

[frankz66]

1000 watts is different.

1000w ÷48v = 20.8a

Make sure you are comparing and referencing the correct unit of measurement

Sorry I correct the post, does it mean that if I have an absorption of 1000w, my 48v 110 storage will give me 20.8a which divided four batteries I would be about a little more than 5 amps required per battery?

 

[seneysolar]

Sorry I correct the post, does it mean that if I have an absorption of 1000w, my 48v 110 storage will give me 20.8a which divided four batteries I would be about a little more than 5 amps required per battery?

Are you asking how long you can power a 1000 watt load?

 

[frankz66]

Are you asking how long you can power a 1000 watt load?

So I have a fridge that consumes an average of 60 watts, but I noticed that a few times a day it has a cue of 830 watts. Considering that my accumulation agm 110 48v 5.2 kw holds this cue well (the voltages are lowered by 0.80 volts for 3 seconds .... I was wondering if I can leave it on even at night. On home assistant I finally got to see this cue that I am attaching to you.

 

[seneysolar]

So I have a fridge that consumes an average of 60 watts, but I noticed that a few times a day it has a cue of 830 watts. Considering that my accumulation agm 110 48v 5.2 kw holds this cue well (the voltages are lowered by 0.80 volts for 3 seconds .... I was wondering if I can leave it on even at night. On home assistant I finally got to see this cue that I am attaching to you.

Ok yes, that is most likely startup current for fridge compressor. Not continuous draw. 830 watts = 17 amps, no problem

 

[frankz66]

Ok yes, that is most likely startup current for fridge compressor. Not continuous draw. 830 watts = 17 amps, no problem

Thank you so much for your intervention! .