42OhmsPA
What's in a title?
Appears to be depending what your low voltage / soc setpoint is at.
6 MWh SRNE ASF48100U200-H 10kw.
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Mfig07
New Member
Ahh ok thanks
A word of caution about purchasing raw cells, it's not an uncommon story to hear someone bought 'grade a' cells only to have received bloated, or less than ideal performing cells. 18650 has a decent reputation on this site, but I have a few less than stellar cells from them that I am now in the process of replacing.
Have you ever tried to ship a lithium battery back to China?
Have you ever tried to ship a lithium battery back to China?
Mfig07
New Member
lol no but I bet is impossible
OffGridForGood
Catch, make or grow everything you can.
A/C, 2 fridges, HWH, and washer = high loads
"adding a 3rd battery soon" so currently you are running all these loads on only 2. ie 10kWh storage ESS.
how much is the load per day? a typical home would use 30kWh. ie 3x the storage you had before the third battery pack.
no enough incoming PV by the sounds of it, how many kW of PV do you have in your set up?
does the PV get shade during part of the day?
It doesn't need to be a separate MPTT - unless your inverter(s) are at max input already, then an additional input makes sense - not to "charge the batteries at all times" but to just have more PV input.
Unless there is anything wrong with your current pack(s), likely you just need More packs.
If you reduce the loads for a day, does the PV charge the batteries to 100% ?
What are the settings you are using for the max bulk and float voltage on the batteries as they charge?
Mfig07
New Member
Good evening everyone! No shade on solar, battery do charge 100% just some days it takes longer. And by 6pm battery are at 25% sence the panels are not facing west to get the last sun. I thought of adding 6 more panels going west I just don’t know if the inverter will have room. Here is the specs for the inverter, my 28 solar panels specs. My battery pack specs and the 6 panels specs that I am trying to add. Let me know if I can add it to the inverter or if I need to get a second mppt for the batteries.
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42OhmsPA
What's in a title?
That would be the simplest solution.
I added a Victron last winter but it wasn't enough to satisfy the addiction so I bought 2 more AIOs
My name is Aaron and I have a problem, I can't get enough power.
Mfig07
New Member
LolThat would be the simplest solution.
I added a Victron last winter but it wasn't enough to satisfy the addiction so I bought 2 more AIOs
My name is Aaron and I have a problem, I can't get enough power.
ok so a separate controller going into the battery bus barMfig07
New Member
Wow! That's a slamming deal?!?! I think it's cheaper then can be built for??
42OhmsPA
What's in a title?
Never heard of them.
It's not a terrible deal for prebuilt, depending freight costs. Last night I ordered 16 280Ah cells and a 200A BMS for $1393.80 shipped to my door.
OffGridForGood
Catch, make or grow everything you can.
Damn, I gotta stop reading these posts...Don't Spend Any Money...
Mfig07
New Member
Morning is hard not to spend money, but as the power company keeps going up. Have to get more batteries. I got my power bill yesterday I used 1569 kWh last years billing cycle for cost of $193. After all the feeds they charged. This year billing cycle for the month I used 1134 kWh with the solar system and my bill is $196,69. You would think my bill will be down but it went up.Damn, I gotta stop reading these posts...Don't Spend Any Money...
Mfig07
New Member
I think I am going to order the power pack just to get me going for now. Later on i can start building new packs.
Mfig07
New Member
Morning how was your purchase thru Ali express. Any scams or anything the power pack I am purchasing is from china not sure how legit they are. Here is the information. But it will not let me do PayPal. Sounds like a scam.
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Contact paypal directly regarding this transaction, may have been Identified as suspicious for one reason or another... I'd verify with them.
Batteries were in good condition when they arrived.. Still testing them, but so far lowest capacity one is at 287Ah. No bloating on any cells and no physical defects.
Ony issue I had was the terminal on one battery seperated from the battery when I was installing the bus bars. Leaser welding issue from the looks of it....
Replacement battery on warranty is being shiped to me as we speak... unfortunately it will take from 30 to 60 days to get here...sigh.
Currently I've got it temporarily rigged up so I can use it... not ideal but still functional.
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OffGridForGood
Catch, make or grow everything you can.
There was another member that had this issue - seems there is a way to CAREFULLY drill and tap/bottom-tap a hole for a threaded stud. Better do some research first if this is the way you go. The gist of it was you can only drill so many mm deep and it's not a lot.
I would be tempted to TIG weld it but that is me LOL.
I would be tempted to TIG weld it but that is me LOL.
LOL...I went with an older style of temp fix, courtesy of Wile E. Coyote... didn't have an anvil handy but a small vise works just as well....
PLEASE REMEMBER !!! This is only a temporary, testing stage only, setup while I work out the kinks in my setup and settings.
A proper battery rack for up to 4 packs is already being put together as time, money and life allow.
Waiting for a call from a few local welding companies to see if anyone would be willing to weld this baby back on. So far, as soon as they hear Lithium Ion battery, the answer has immediately been "HELL NO!"
42OhmsPA
What's in a title?
I do quite a bit of risky things and this scares me. Seeing what happened when I arced a wrench across 2 cells while top balancing was eye opening to me.
If that vise were to fall off that foam your going to have some major issues!
Can your BMS support 15S wiring?
There are some threads where other users used a conductive epoxy.
I'm not sure a welding shop would you the welder you need, a laser welder. There are lots of videos on the utubes showing laser welding.
If that vise were to fall off that foam your going to have some major issues!
Can your BMS support 15S wiring?
There are some threads where other users used a conductive epoxy.
I'm not sure a welding shop would you the welder you need, a laser welder. There are lots of videos on the utubes showing laser welding.
Mfig07
New Member
42OhmsPA
What's in a title?
Run away and clear your history.
Those batteries aren't bad but the site is a SCAM!
Mfig07
New Member
I thought so for $69. Dollars.Run away and clear your history.
Those batteries aren't bad but the site is a SCAM!
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