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What is the small 12v DC to 240v AC inverter you bought off eBay?

Yup old filing cabinet with some cpu fans in the side and top

Put them in series with a BMS and charge them up to 3.6 if you can limit your parameters in the scc then disconnect all batteries, put them in parallel and then top balance.

Glass is generally more efficient and with companies like Santan Solar they’re cheap and easily replaced.

Yeah what he said, but since you only have 100 watt panels you’re initially correct that you’ll have the potential to harvest 2.5 kW of energy per day assuming you get 5 hours of insolation. These numbers have less to do with your inverter and more to do with your charge controller (CC). If you...

How much do you want to spend? How simple or complex do you want the system to be? Here’s a possible quick solution for under $10k: 1. Get 10 of these used 435w panels santan solar for ~$1k 2. Buy a Delta Pro Ultra Intelligent kit bundle for ~$7.5k 3. Wire it all up and you’re good to go...

It sounds like you connected to your solar panel directly to you battery. That is not a good idea. You need to take that power wall unit home with you and charge it from the grid or some other stable source of electricity. I would also recommend getting your hands on two small 12v agm batteries...

Yes 16 would be better than buying a 48v battery anywhere. Right now I’m looking at BigBattery which now has everything on back order lol or Gyll...anybody have experience with Gyll?

Oversizing is usually only an issue for your wallet :)

Everybody’s “sweet spot” is different lol. There are so many options these days. It really comes down to warranties and whether or not they’ll be honored, which is why I generally agree with the statement above about PowMr as long as I can find it on Amazon and get protection on it so I can...

A two pack like this wired in series for $26 should do the trick to get that growatt going.

Sometimes the BMS needs its own power source before it will start working properly. Have you looked into that? I’m pretty sure there’s a YouTube video out there showing this.

Damn. That sounds like it’ll do the job! Also sounds like a bitch to set up but totally worth it if you’ve got the time and inclination! Good luck buddy!

Here buddy, 48v to 12v to 5v if you want to power any 5v devices like usb phone chargers or in this case a WiFi modem :)

So I was one of the lucky winners in the Las Vegas giveaway @Will Prowse had a month ago and I’m finally getting around to working with one of the batteries. It seems to be a slightly damaged pouch cell 12v battery. Fortunately, I’m not one to look a gift horse in the mouth so I’ll be hooking...

If any of you are curious about what I’m planning on doing with these batteries I’ll have it up in the show and tell section here: Thread 'Slightly punctured pouch cell still good? Let’s see!' https://diysolarforum.com/threads/slightly-punctured-pouch-cell-still-good-let%E2%80%99s-see.61650/

Yeah 40a and 12ga doesn’t sound like a good idea. I’d go 30a max and that’s with a good thhn wire.

I put liquid bandaid ? on it and it’s out in a shipping container so not really “indoors?”

@Daddy Tanuki isn’t wrong. If you’re worried, spend a little more money and relax. What you spend the money on is debatable. Spend money on tier 1 products or extra safety measures. There are thousands on here who do not use extra safety measures. There are thousands who do. There are only a...

This will work perfectly fine. The amount of time it takes to balance depends on your BMS. Does it have an active or passive balance on it? 1A or 2A balancing? Hopefully you didn’t go with a seplos BMS…

I would love to help you on your build if you ever need a hand! I’m in the same boat with solar companies. If you find an electrician to help you with the grid tie I’d love to hire him/her too!

You’re living the dream Andy! I hear you want to move to 48v but have you thought of going higher? Those ev batteries can make a much more efficient high voltage pack and that’s may be where the industry is headed. Check what this guy did with his project!

Caution ⚠️ if you have OCD do not scrutinize my temporary set up too closely. Suffice it to say that my 360 watt 48v to 12v Dc-Dc converter only supplies around 100 watts continuously. Any amount over that creates way too much voltage drop and my PC and GPUs crash. So, I took the battery I got...

This might be what you’re looking for. https://www.hotspotenergy.com/solar-heating/

Or this

I completely agree, in my mind that should work perfectly! Then it’s just a matter of getting the permit to slap it on the roof!

Thanks Joe!

Almost 2 months later and it hasn’t blown up lol ? Caution ⚠️ if you have OCD do not scrutinize my temporary set up too closely. Suffice it to say that my 360 watt 48v to 12v Dc-Dc converter only supplies around 100 watts continuously. Any amount over that creates way too much voltage drop and...