Wow!
I think you are overthinking this...
When designing my system, i put all the major appliances on a Kill a watt meter for 24 hours each and made a list of their consumption.
Sized the inverters to deal with surges and high draw items (microwave, coffee maker)
Sized batteries and solar to...
No, seems you're here to argue.
My 35 year contractor experience with pressure treated wood is that the only issue to avoid is ground contact. This lumber in free air lasts a lifetime.
How many people are replacing their decks after 10 years?
One cycle is defined as fully charged to fully depleted to fully charged again.
100% to 0% to 100%.
My 1st pack was commissioned 10/29/21.
2nd pack commissioned 1/15/22.
Typically discharge to 55-60% over night.
Pack 1 has accumulated 411 cycles.
Pack 2 has accumulated 353 cycles.
No...
5.9 kwp of used panels.
Saw 5.2 briefly today near the equinox.
18 235/255 watt panels to a 6-1 combiner for one charger.
6 panels to a second charger.
4x4 posts 2 feet deep, no concrete.
2x8 with a ripped 2x4 as a stiffener and the rip is at an angle and gives me a bolting surface for the...
I almost went down this road.
But then it occurred to me... $2600 worth of batteries, $1000 for various tools and parts, $1800 for inverters, et al.
Why am I trying to save $30 or 40 on proper, FLAT busbars.
Even experimented with several flavors of pipe. Hammered, used a vise. I was unable to...
Thank you @ghostwriter66 for sharing this supplier.
Ordered 16 EVE 160's 10/21 There was no stock in Houston so had to be shipped from China. Fedex shipper printed 10/26. Tracking went live 12/24 when Fedex picked up from customs. 10 scans later, they were delivered today 1/2.
Boxes in good...
Well, I took the credit in multiple years.
Originally for the base system.
Following year for additional solar and batteries.
I'll post here if Uncle Sugar comes knocking...
I just unrolled it in the street with my brother the whole spool and then doubled it back upon itself. Match the ends up, go back to the u-turn, stretch, cut.
Didn't require $1,000 tool.
One of two things.
That cell is at a dramatically different SOC than the rest or
most probably
Inadequate connections.
Remove, buff to a shine with Emory cloth and then clean with isopropyl alcohol each and every metal surface.
Reassemble.
ALSO, your bus bars are ramped from one cell to the...
I'm going to build a tilt a whirl for six panels. But the weather turned and I put it off till spring. So I had six panels leaning against the shed doing nothing and thought how could I put them to use temporarily for the winter.
2x4 tacked between the posts, pavers underneath, and two and a...
A more accurate comparison would be EG4 100 amp hour versus DIY 100 amp hour.
EG4 =5120 wh $1499 +tax and shipping
DIY = 5120 wh CALB 100ah $56*16= $896 + 155 for BMS + 100 extras +50 circuit breaker =1201. + lugs, crimper, wire, time, anxiety...
EG4 $0.29 per wh.
DIY $0.23 per wh.
Do you just...
Why are you so bent on convincing readers of the beneficence of the electric companies?
I'm still connected as a backup for low solar periods. I'm all self consumption. About a year and a half now. Electric bill went from $235 a month to $110 a month. Net of tax credit cost about $5k. ROI under...
Reject?
You did it.
We out here in DIY land are not equipped to compress these cells the way the manufacturer did. Computer controlled hydraulic press.
I mean OSB? Really? You couldn't come up with something stiffer?
I built boxes from ¾" spruce plywood to contain and fixate the cells so they...
That Thermoking unit should not be part of the conversion. I would remove it and sell it. Then your conversion can begin with a well insulated box. Add a human rated air conditioner.
The point is that you are basing the need for an alternative on here say.
A couple of guys on a board somewhere said it doesn't work.
Try it first, and if it in fact doesn't work, then consider the alternative.
Just begin the experiment with charging current restricted in the inverter.
Hook it...
Agreed. But for me SOC is always a moving Target. My system is never still. So the difference between 28% and 24% on the discharge at any given point in time or the difference between 76% and 80% on the charge is irrelevant to me.
Open the manual for your inverter charger. Go to the place where the settings are for to grid voltage and back to battery voltage.
Set back to battery voltage to a lower number!
The way you're doing it is interrupting a process. Sort of like powering off and back on your PC when it's in the...
No.
There is a shunt in the Overkill BMS that does a fair job of SOC calculations.
I have 2 that I have been watching in Solar Assistant for over 2 years.
They work well.
My MPPs don't work like that.
There is an on/off switch that only controls the inverter circuit. That is the circuit burning idle power.
You can't turn off the solar input except with an external switch/breaker.
Panels connected, SCC is live
3.3 volts per cell is NOT top balanced.
Ignore the SOC percentage indicator while top balancing. 100% is above 3.45 volts per cell for a period of time.
Imbalance is only visible above 3.45 volts
And balancing is only effective above 3.45 volts.