Recent content by underdog5004

I had an issue recently with soc drifting. One out of six batteries was showing only 78ah stored, with total capacity at 99.8ah. The low battery was at th3 same voltage as the high batteries. I disconnected all but the low battery, and ran some big loads on my system. Battery showed 0% soc...

There's not much difference between new and several years old panels. Especially if you get those 330w panels... Or, buy that pallet on ebay and sell what you don't use. People often underestimate the value of having a few extra (identical spec) panels in storage, and the difficulty of...

I have 6x rec 330np panels. Currently installed for a couple years. Humboldt county, ca. I'd take them down and ship if the price is right. Let me know what you think.

Also because I'm only bringing them up to 55.6 maybe I should think about taking them up to 56 or 56.2 for an hour and a half so that the actual voltage at the battery sells exceeds 3.5 volts per cell. 55.6 volts per battery equals 3.475 volts per cell

Yeah I understand that the batteries need to come to 100% state of charge. These batteries do they are regularly brought to 55.6 for an hour and a half absorb and then float at 54 Volts for the rest of the day. That's why I was surprised at the drift because I was regularly topping them off...

I have six life Power Batteries 48 volts all in parallel to a bus bar. Number two wire between the batteries and the bus bar. I noticed that one of my batteries was only showing three lights when the others were showing four lights state of charge. At first I was worried about the capacity. I...

I'd be cautious about bragging to your neighbors about the resource that you have that they don't. Desperate people don't have friends. If you have something they want or need that puts you in a potentially dangerous situation. I don't tell people about my solar system. I don't tell them about...

I got a free above ground pool from an ad on Craigslist. I went and picked it up strapped it down brought it home leveled a pad unloaded it started putting it together and discovered that I am short one of the critical pipe pieces that support the side so...

I've seen people have issues with signature solar warranty replacements. Signature solar required that the boxes that the batteries were delivered in be used to ship them back. This has to do with shipping regulations in relation to lithium. I went through a whole certification on this the boxes...

Also as I recall I had to take out a few good cells as well as all the bad ones I found so that each Parallel Group had the same number of cells in it. In my mind the smaller 5 amp hour cells aren't worth working with when you can get larger much larger Prismatic cells at a relatively low price...

I removed the zero volt cells and did not try to charge them again. there was some leaking electrolyte in the case like a brown fluid that smelled incredibly bad. The zero volt cells weren't all in the same Parallel Group but they were in the same volumetric area. Yeah I don't recall that the...

I've done what you're trying to do. This was with a discover AES 6.4 KW battery I think. The design of that battery something like 24 cells in parallel then 16 in series. The connections between cells are not bus bars but were circuit board material I guess with a lot of conductive material in...

Yeah over paneling with amperage is way more tolerable than over paneling with voltage.

I was doing research on my Outback FM 80 charge controllers and found that Outback recommends no more than 64 amps of solar coming into their 80 amp output charge controller. I forget the percentage I think it was 80% of output as input.

I thought it was interesting that the foam spacer tape does not cover the entire side of the battery cell but only the top and the bottom I suppose that is to allow compression at the edges while allowing some expansion in the bellies.