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Thanks to a gracious member here, I just picked up 48 LifePO4 cells that I plan to build into three 16s batteries. I had I initially considered retiring my current battery bank (14s NMC) But, now I'm reconsidering... Please, let's stay on track. Can we please not discuss everyone's fear in...

I've got InfluxDB running a database storing data about solar production, battery data, grid load, and weather. But, I'm no database expert, I can't manage to get the thing to down sample the data. A few of the data points come in at 1.5 second intervals. Once I get more than a week or month...

I've never seen panels with mounts anything like this. Any ideas on the use, purpose, or how they look installed? https://www.westauction.com/auction/3746/item/1-sunpower-320-watt-solar-panels-499190

I wish I was in the market for an inverter The Midnite Rosie is on sale for $2600 at AltE https://www.altestore.com/store/inverters/hybrid-inverters/midnite-solar-rosie-7000w-48v-invertercharger-p42689/ Pretty good specs 20kva surge 7 watt idle draw American made Supported by the designer and...

If you look at the attached spec sheet, the panels have 6 mounting holes down each long side. The center most pair say "Tracker" These panels are nearly 90" long, so using the center pair of holes leaves you with 3' of unsupported panel balanced in a pair of holes 16" apart. Thoughts? Am I...

I need to make a single spot weld on what looks like the same nickel strip used to build packs from 18650s Anyone want to rent or sell me a spot welder? I'm in the middle of California if you're nearby I can drive to you.

I've got about 7 Milwaukee M12 batteries. This morning, one 6.0ah battery failed to charge and the charger started blinking alternating red and green LEDs. The symbol on the charger reminds me of a broken heart, but a battery instead of a heart. You can see the led key on the charger below. I...

Well, I never thought I'd need the warranty on my solar panels, but here I am. 5 years into the 25 year warranty. Anyways, on to my story. Yesterday evening, I logged into the Solar Edge monitoring platform and had this alert: I like how at the end they basically says, our stuff isn't the...

I want to start by saying that I realize I will never recoup the money spent on this tracker. I don't need any reminders. Electronics and solar are my hobby. The tracker was the 11 year old's idea and he wants to help! Anyways on to the meat and potatoes! We're looking at a 2 axis tracker on...

Looks like someone found a way around the bot filter checks, there's pages of this garbage from multiple log ins

I noticed a few days ago that the text features at the top of the post entry box were greyed out an unusable. Is there a way to underline or bold text short of learning the code needed? Also, previously attachments were images in the preview, now it is text. Edited to fix typo, but couldn't be...

Ran into a snag interpreting 690.13 and 690.15 I both refer to DC disconnects, with for safety or serviceability. 690.13(A) has a note stating 690.12 (RSD) satisfies the requirements for 690.13 690.15 reads extremely redundant after going throu 690.13 690.15(C) makes me think I might need...

Short version: what's the current $/watt for a system installed in California? All in, parts, labor, permitting, everything. No battery, just PV Slightly more details: I'm submitting permits for my PV installation. The city has requested I enter the estimated installation cost for my PV. I...

I just pulled the trigger and ordered more solar stuff! My concern at the moment is the length of the PV cable on the Tigo RDS boxes. Both the Tigo single and dual shut down boxes, combined with the panel leads, don't have enough length to make it work. How would you splice more length onto...

I've been slowly looking into adding a multizone mini split to the house. I live in a hot region in California. Summers are over 100 for days on end. However, my question is about heating in the winter. We rarely get below freezing. I believe the record low is something like +16f In looking at...

Yesterday, the SO was whining about how expensive payback on the system was. I decided to do some math; I've mentioned Ohmconnect before. She's been enjoying the $$ but didn't understand it, so I just did the math for the first time. For one hour, I set the XW 6848 to output 27 amps (@240 vac)...

I've got a Battery Tender 5 watt battery maintainer/trickle charger. https://www.batterytender.com/5-Watt-Solar-Tender-Charger-With-Built-in-Controller It isn't much, but it did keep the batteries in the truck charged between uses. Well, the integrated controller died. The led flashes...

SOLD SOLD SOLD Selling my Aims 12 volt inverter. 1500 watt inverter charger This is a low frequency, pure sine wave inverters Surge rated to 4,500 watts. We only used a few times before we jumped in with both feet and went 48 volts to back up the entire home. I'd guess less than 10 hours...

I just tried to set up my brand new pair of Batrium MM8's (to go with my existing WM5 and single MM8) Neither of the new MM8s will connect to the Batrium Watchmon Toolkit or Firmware Updater. When powered via USB for the update the status light is a dim blue. I'd guess 50% brightness when...

This is questionably far off topic for a PV forum, but I know we have some members with great knowledge of the NEC code. I could use some help finding the NEC code evidence to prove weather or not NEMA 10 series receptacles (10-20r, 10-30r, or 10-50r) are not suitable for new work. At least...

I've got to be vague because the is work and they are paranoid about any info getting out. I don't know why. We've got some LifePO4 cells that have been in service for ~3 years. These are in a mobile application with multiple cells in series and parallel to form one large pack. Just recently...

How are you attaching cell temperature sensors? I am using LG pouch cells (from a Chevy Bolt) and a Barium BMS. I was just going to hot glue to temp sensors on, but that is probably an insulator. How about something like this...

I could use some help with my Batrium. Last night it was nearing the discharge limit of my inverter and I was watching to see how the inverter transitioned. To my surprise the Batrium must have set a critical fault, because it opened the shunt trip breaker. Is there a fault log to see why the...

I installed my existing 6kw Solar Edge System, got permission to operate from PGE 12/2018 Now, I am adding battery storage. I started this process nearly a year ago, I submitted the first permit draft in May 2020. Now, in February 2021 I picked up the Conext XW pro and mini PDP. Got it hung on...

I was/am planning to add battery back up to my AC coupled PV system. My plan was to use the Schneider Conext XW Pro. But, I contacted Schneider and the inverter doesn't function the way I want it to for daily use. Back up is great, but, that's about all the conext would be in an AC coupled...

I am planning battery back up to my PV, AC coupled. And in California, so I should be rule 21 compliant I am looking at the Schneider Conext XW Pro (6848) Per the spec sheet you can charge a battery up to 64 volts. But the inverter range only goes up to 60 volts. I can't see a situation where...

I am looking to add a Schneider Conext XW pro for battery storage to my existing solar. Currently I have a 6kw Solar Edge inverter. I installed this system myself along with the 20 panels on the roof and the critical loads panel. I suppose I am not stuck on the Schneider, but it is rated to...