Most reacted threads

I am about to start with my sand battery experiment. I plan on using it as a simple heat exchanger by blowing the heated air through metal pipe(s) into a room. Dimensions of the build will be 4x8x4 to start, bigger if needed. I've decided to bury standard stove-top heating elements like the...

Greetings! Just ran across this article. It is about how researchers have been improving the Sodium Sulfur battery technology. They point to improved carbon electrodes making them 4 times better. Sodium sulfur batteries have been around for a while. Has anyone used them before? Is this...

Greetings! I am remodeling my Class A RV to include completely re-doing the coach electrical. I would like to switch to a 24V system instead of going back to the 12V that it was originally. What are the steps involved? I will be installing solar with my remodel. I would like to build...

Greetings, After a lot of research into the advantages & disadvantages of using Nickel Iron batteries, I've decided they would fit my needs well. A neighbor near me has had Nickel Iron batteries for quite a few years & they are working very well for him. He highly recommends them even over...

Found this company through some YouTube videos. Does anyone have good or bad experiences with their products? I'm interested in their 10kw LiFePo Battery. https://www.fortresspower.com/lithium-ferro-phosphate-battery/

Can I get recommendations on where to buy affordable 18650's to build a powerwall? I am planning on needing 200 or so for my first build. Are there better LiFePo batteries for the price to build home Powerwalls than the 18650's? Thanks!

Good Afternoon! This is a question for any individual who is willing to help me arrange my mixed solar panels into the best possible configuration. DISCLAIMER!!!!! I already know that mixing panels of different brands, voltages, and amps is not ideal. I am looking for the best possible...

Greetings! I am going to assemble my larger sand battery I posted about here: https://diysolarforum.com/threads/sand-battery-experement.67368/ I have made a few slight changes & have purchased a large metal barrel measuring 6' tall and a 4' diameter. Before I start assembling this large...

Greetings. I made a mistake in wiring my LiFePo batteries to my system and am wondering if my batteries are salvageable. I have two 48V, 289Ah LiFePo batteries in my system. I had been using only one battery at a time, switching between them. Both worked well for my needs. I am installing a...

Hello all! I now have two 48V - 9.6kWh LG Powerwall Systems from BigBattery. I am going to put them into parallel for some nice storage! I will use these with the new 6048 Inverter System from MPP. I am brand new to 48V systems as this will be my first install into my RV. I understand that...

https://www.amazon.com/gp/aw/d/B08G8HXNJK/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8 I seen a few other folks referencing these. Would these work well in an RV with high power usage?

I am planning on getting Tesla's Cybertruck in the next 2 years. I would like to prepare a DIY home charging station for it now. I live in sunny Arizona. What would I need to be able to charge it at home off-grid? What size inverter? How many solar panels? What can I buy/make on my own & what...

Greetings! My EG4 48V 100Ah batteries have arrived! I have 3 and will place them in parallel for 300Ah total. I am using an MPP 6048 Split Phase Hybrid Inverter. I did NOT order the server rack that goes with these as my budget could not afford it. I called Signature Solar today and discussed...

Greetings! I'm thinking about making my own busbars for my three EG4 48V 100Ah server rack batteries. I am wanting to buy local from a Lowes or Home Depot as it will take weeks for copper bars to arrive where I live if I order online. 1. It was suggested that I can crush copper pipes flat to...

Greetings! My question indirecty relates to solar in that eventually I will install solar but just for now I need to run all electrical off of shore power. I am getting a minispit to install in my motorhome. I'm refurbishing my motorhome's electrical to be just like a house with 120/240V...

I am posting here to see if there is any interest in my 2006 Ford Escape Hybrid Battery. The Escape itself still runs & could be driven to your location. The vehicle has multiple problems at 350,000+ miles and it's time to retire it. As far as I know, the battery is still good so the resale is...

Sold!!!! We are selling our 2004 Ford Escape Hybrid Battery. No known issues. Make offer. Vehicle is still driveable (no power steering).

Greetings! I am wondering if I can add this generator to my off-grid solar system and how to do it. My system is: 48V using: ---1 MPP 6048 Hybrid inverter/charger ---3 EG4 48V 100A server rack batteries --- Approx 3000 watts solar during sunny days We have been having many cloudy days in a...

Greetings! What is Will's current LiFePo battery recommendation for folks on a budget?

Greetings! I ordered four 12V 206Ah SOK LiFePo batteries to use in my solar setup. I plan on using a 48V system. 1. I heard that busbars are the way to go for connecting the batteries together for 48V. Are there recommendations of busbars that will easily fit the 206Ah SOK's? 2. Once I...

Greetings! I'm taking recommendations for server rack batteries. I went to Will's website & seen his recommended choices. Are there any used server rack batteries that have even better prices? Thanks!

I read this article here about a battery company that just released a Sodium Ion battery solution that can get fully charged in 25 minutes & works between -45C to 45C. https://cnevpost.com/2025/03/28/hina-sodium-ion-battery-solution-commercial-cars/ I have a simpleton question: Would it work...