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If you have functionality issues on this forum, message me a screenshot of your problem (specifically, on multiple devices or browsers). If you do not provide actual evidence of your problem, I will ignore the message. This is because I have received multiple "false alarms" this month. This is...

New Section for DIY Solar Forum! I was browsing through the forum nodes today and felt like something was missing... Heat pumps! If you need to heat or cool a space with solar power, check these devices out. Super efficient method of moving heat with power generated by an array directly or...

You guys will love this. I took some high definition pictures of the inverter they are using at this massive installation. And it gets even better. I found a broken 250kW Tesla charger near a transformer! Check it out:

If you are trying to use a lifepo4 battery in freezing cold temperatures, battle born just released a 12v heat pad for keeping the batteries warm without melting the case. This pad should work for any standard lifepo4 battery. Just slap it under your batteries and connect it to 12v and you are...

Feast your eyes on this curve: Not bad for a 4.5kW array in February. Still able to charge my Tesla in winter. Gotta love solar power :)

So currently, DEYE, Voltronic and Luxpower manufacture our favorite large off grid inverters. And at this years largest solar conference called RE+, everyone had relabeled units from these three companies. So my goal this year was to find a competitor. And I think I have found one. Chint Power...

How long have we wanted something like this for?! They claimed a 10 year warranty without any leaks. Very new company it seemed like, with current installations being pretty small. Super cool to see!

Typically I do not get excited over heat shrink, but today I think I found my favorite. It is lined with adhesive and when it cools down, creates an incredibly strong connection between two PV wires. This is for those of you who prefer butt splicing their PV cables instead of using MC4 for PV...

Solar is not forgiving when you buy low quality components ?

Really interesting information here about low temp charging and solar power. Denis is a PhD and was a professor at University for years. Factory video tour to come.

If you're using a growatt 5000es (European model that I don't use in my videos) with an auto transformer, you need to watch this video. The output of the inverter bonds the ground and neutral, which is designed for use with European grid. Conversely, American grid uses center tap transformer to...

Time Limit for Editing Posts has been Disabled (Thank you to all who suggested this change!) Image Size Limit has been Increased (It was limited before so that the image would not take up the entire post. Now it is at a sweet spot) Advanced Search Options have been added. Check them out You can...

Hey everyone! This post is to show the donations received, and cost to host this forum. When this forum first opened, we outgrew our first server quickly. The estimated cost to run monthly was $400, and it would shoot up to $600 pretty quickly if we posted pictures. I frantically searched for a...

Holy cow, where do we start... $149,000 of batteries... are they unaware of other options on the market today? 12V batteries in series? Yikes...

Update on BYD LiFePO4 problem. People bought used BYD packs advertised at 4-4.5kWh, but many of them are testing at 3 kWh. What matters most is if you bought your pack from batteryhookup.com or bigbattery.com: Bigbattery.com capacity tests their byd packs sold on their website. After I posted...

Figured this should be covered in a video. I have tried various wiring configurations over the years, and using busbar w/ equal length conductor has never given me problems. I would still have issues with other common wiring methods. Would love to hear what you guys recommend. Keep in mind that...

We were having some problems previously with people editing their past posts in arguments/disagreements. People would get angry, and edit whatever they wanted to. So for a few weeks, we enabled a time limit for the edit function (10 hours). People complained, but this fixed a lot of problems...

Cast your vote above ? you cannot see the results till you vote. One vote per individual.

https://www.nextbigfuture.com/2024/01/ev-lfp-battery-price-war-w-55-in-six-months.html I hope we see some of these price decreases for stationary storage LFP! But check out the comments. An individual shared this opinion: Alexthinks January 16, 2024 at 10:12 pm This is not good news. The...

And it gets even better... This is the photo in the advertisement: Which is a total lie! Different bms, different cells. Everything is different! What a joke. Check out the listing by clicking here

I loved putting this together. Was not tired at all after doing four panels. These epoxy ground stakes... Is anyone else doing this? I can't believe how strong they are. And the water ballast is a new idea... If it doesn't leak. I guess they are cheap so you can put a few for added...

Used my own money to buy the batteries below for a video review/test: I have been skeptical of these 3 batteries for months now, and a lot of people keep asking questions about them. I will make a video on each battery. I can't wait to see how well they perform because they are dirt cheap...

What is the solar equivalent of this label? How about replacing the FETs in cheap BMS ??

"The California Public Utilities Commission (CPUC) is soon to vote on a proposed decision that is expected to be harmful to the value of rooftop solar for renters in multifamily housing, farms, and schools. The decision would disallow residents of multi-meter properties to consume their own...

I would like to challenge anyone reading this to find a photo or video of a LiFePO4 creating internal combustion from thermal runaway event. I keep seeing people comment that LiFePO4 can combust, but UL listed companies and battery studies are telling me otherwise. Where are people coming up...

Everyone should check out this safety article: DC Battery and Arc Safety Some fun screenshots: