The Battery Thread (Solar / Inverter)

johnjm said:
e0484667730e5d80e8f22b9c9318e029.jpg

Done and dusted. What a mission lifting them at 43kg each.

I’ve changed the charge profile but am still a little confused about the boost duration default settings on my MPPT.

Need to call sosolar to double check what they recommend.
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It says max charging current 0.1C-0.25C, so 150 x 0.1 = 15A-37.5A. I figure 20A is the happy medium between speed and longevity.

150Ah divide 20A = 7.5 hours charge time FYI.
 
wingnut771 said:
It says max charging current 0.1C-0.25C, so 150 x 0.1 = 15A-37.5A. I figure 20A is the happy medium between speed and longevity.

150Ah divide 20A = 7.5 hours charge time FYI.
Click to expand...

Yeah thanks, I googled a bit after that. Have kept the UPS that will be used tonight at the low setting which is approx 20A.

At 2pm I let the MPPT charge it and tracked the progress. I found it interesting it was still throwing in 100w at float charge but I guess it’s to top it up.

The UPS sucks because I can’t track nor see the actual Amps it is charging it at.

I’ll be watching the MPPT stats though when lodshedding hits me at 8to10 tonight, and then again at 2am to 4am. I hope the 4 hours is good enough for a full charge. I do plan on ensuring I draw a max of 350w for the two hours on average to decrease the discharge state so it is fully charged.

Tomorrow morning it will be great to see the voltage graph of everything... I must actually add in a battery percentage graph into my rpi tracker.
 
johnjm said:
Yeah thanks, I googled a bit after that. Have kept the UPS that will be used tonight at the low setting which is approx 20A.

At 2pm I let the MPPT charge it and tracked the progress. I found it interesting it was still throwing in 100w at float charge but I guess it’s to top it up.

The UPS sucks because I can’t track nor see the actual Amps it is charging it at.

I’ll be watching the MPPT stats though when lodshedding hits me at 8to10 tonight, and then again at 2am to 4am. I hope the 4 hours is good enough for a full charge. I do plan on ensuring I draw a max of 350w for the two hours on average to decrease the discharge state so it is fully charged.

Tomorrow morning it will be great to see the voltage graph of everything... I must actually add in a battery percentage graph into my rpi tracker.
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Obviously my numbers are for 12V, so I would assume you halve the amps at 24V?
 
Looney said:
I’v just purchased the Sunsynk 8kw hybrid inverter and 2 Hubble 5.5kw batteries.
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Where did you buy the hubble's from?
I'm looking to buy an AM-2 at the end of this month (I already have a inverter. not installed yet).

Thanks
 
Mier said:
Where did you buy the hubble's from?
I'm looking to buy an AM-2 at the end of this month (I already have a inverter. not installed yet).

Thanks
Click to expand...
Hubbles are available from The Powerforum Store, if you are quick you may manage to catch their special on AM-2s.
 
Speedster said:
Hubble shill doing their brand no favours.
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Exactly. If Pylons were built as poorly as they claimed you’d have such reports all over the internet. I stopped going to that site specifically because of such (and other) claims being bandied about
 
wingnut771 said:
Obviously my numbers are for 12V, so I would assume you halve the amps at 24V?
Click to expand...

I reckon they stay the same considering they are in series as the Ah remain.

It looks like they weren’t fully charged when loadshedding hit at 2am, not good thing and I had changed the charging current to the middle setting before because I was nervous. Glad I did. Not ideal but I guess could be worse.

I’m going to measure the charging current from the UPS on Friday night when I am loadshed again. Also have it tomorrow midday again but not concerned due to the solar, hopefully a sunny day.

Edit graph below. Current is nil because it’s only the MPPT current that I can measure via the MPPT obviously

05d3a94323e249f22cfa5c306f80ee8b.jpg
 
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