DIY Solar Power Forum

General Discussion Let's talk about solar!

DIY Solar General Discussion

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Show and Tell

Post your DIY solar power system! Pictures or it didn't happen :)
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Solar Equipment Vendor Review Corner

Want to share your experience? Post it here
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Beginners Corner

Embarrassed to ask a question in the other boards? New to solar? This is your spot :)
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Up in smoke... learn from my mistake!

Did your experimental battery or home built inverter experience a rapid, unplanned disassembly? Reverse polarity a $3K inverter, and see it go up in smoke? Share it here!
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Newcomers

Introduce yourself here! And welcome new members
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Frequently Asked Questions

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Job Posting Corner Find a business or individual to install an off grid system for you! Or a career in the solar industry. Use this section at your own risk. This forum is not liable for jobs or work posted below.

Offgrid System Installers

If you can help people install an off-grid system, tell us about your business here!
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Need Help? Post your job request here

Live far from others and need some help with your system? Post what you need here and someone may be able to help you out in person.
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Corporate Jobs Available

Find a career opportunity in the solar industry here!
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Looking for a Career? Post Your Resume Here

If you love solar and wish to share your qualifications with the world, do it here!
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Solar Systems

Vehicle Mounted Systems

RV's, Vans, Trucks and More! Typically 12v, and 100-1000w, but the limits are endless!
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Cabin or Tiny Home

Power your tiny abode with solar power!
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Shed or Shipping Container Mounted Systems

Building an Off-grid System in your Backyard? Stick it in a shed! Or a shipping container if you have the space. Affordable and Easy
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Marine

Building a system that can withstand a marine environment is difficult! Talk about it here
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Harsh Environment

Extreme Temperatures? Advanced Autonomy Systems? Talk about it here!
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Off-grid Living Advice

Cooking tools, heating and cooling, dealing with winter sunshine and more!
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Residential Solar

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Solar Water Pumps

Need to move water with some sunshine? Talk about it here!
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Solar Water Heating

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Energy Storage Are you a battery addict? Same here. You can NEVER have too many batteries!

General Battery Discussion

Anything and everything batteries!
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Lead Acid Batteries

Good ol' fashion lead acid!
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Beginner Friendly "Plug-n-Play" Lithium Batteries

Battleborn, Ruixu, Simpliphi, Kilovault, Trillium, Renogy and more!
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DIY LiFePO4 Battery Banks

Advanced user discussion on BMS/ Cell Configurations/ Temperature Regulation/ Cell Sources and more
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BMS (Battery Managment Systems)

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Second Life Lithium Batteries

Found a Lithium Battery in a Tesla/Nissan Leaf or Electric Bus and want to use it for solar? Post about it here.
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DIY Powerwalls

Grid-tie battery systems for energy independence
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Uncommon Batteries: LTO/ NCA/ NMC/ Li-Poly

Not recommended for solar, but still an option. See what others are doing and post questions here
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Back-up Generators

Backup petroleum energy storage for off-grid solar systems
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Everything Else Storage

Using an EV car for Storage? Tell us about it!
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Solar Equipment Reviews and Technical Support Trying to program an inverter? Need to post your thoughts on a solar panel? Post it here :)

Solar Panels

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Solar Charge Controllers

MPPT/PWM/Converters without batteries and anything else you find! Discuss it here :)
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Off-grid Inverters

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Grid-tie Inverters

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Solar Generator and Micro Systems

A battery/inverter/charge controller setup for mobile or stationary application. They are usually ready built or "plug-n-play".
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Wire/Connectors/Junction Boxes

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  • JanC

Home Brew Solar Electronics

General Discussion and Brainstorming

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PCBs, Prototyping, Casing

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Software

Microcontrollers, Microcomputers, Cloud software, Embedded
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Hacking and Repurposing Solar Devices

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Tool Section High quality solar installation tools will make your life 1000x easier! Discuss your favorite tools here

Bench Top Tools and Testing Equipment

Scopes, Meters, Capacity Testers and More!
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Hand Tools

Wire strippers, cable cutters, crimpers and more
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  • JJJJ

Power Tools and Soldering Irons

Large Power Strippers, Impact guns, Soldering Irons and more
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Favorite Tool Show and Tell

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  • JJJJ

Learning and Help Center

Safety Check Section

Post pictures of your DIY system, and have other people check for safety issues
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Sizing and Planning

Energy Audits, Roof Planning, TOU Plans and more!
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Troubleshooting Help

Dealing with a frustrating problem with your system? Post it here!
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Solar Array Mounting Methods and Advice

Tips and tricks for mounting solar panels to different roof materials and environments
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Codes and Regulations

Need help following local laws when installing your system? Not sure if what you are doing will land you in jail or with a hefty fine?
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Electrical Safety Gear

Did a pair of safety glasses save your vision? Did soldering smoke hurt your lungs and you found a product to fix it? Post it here!
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Complaint Corner

Dislike something about this forum? Want to add a discussion topic? Talk about it here and it will get fixed!
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DIY Solar Marketplace: Sell your own stuff! Use at your own risk. Our forum assumes no responsibility for products purchased in this area. This section is for individuals only! No vendors allowed!

Solar Panels for Sale

Have some spare panels laying around? Sell them here!
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Batteries for Sale

Not using an old set of batteries? Sell them here!
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Inverters and All-in-One Units For Sale

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Wire/ Tools/ Accessories For Sale

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Online Deals to Share with Others

Found a cheap price on some batteries? Share it here!
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Other Renewable Energy Sources

Hydroelectric

Have a small stream in your backyard and wish to create free power from it? Check out what others have done here!
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Wind Turbines

Discuss and build wind turbine systems! Check out what other people have built and share your own
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Off-topic Discussion

Chit Chat Zone (Non-Solar Discussion)

Post your opinions or thoughts about the world or anything else you wish. Be civil!
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Humor section. Share your best electrical memes!

Everyone loves a good meme!
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Other Websites

Found an awesome resource for solar? Or something unrelated but still amazing? Post it here
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Latest resources

Latest profile posts

Svgenov wrote on brum's profile.
Здравей. Гледам, че си в час с батериите. Имам една фабрична батерия LiFePo4 с всички видове букси за комунакация с инвертора, и искам да я свържа с Growatt SPH5000, но инвертора не я разпознава. Има ли някаква настройка на този тип инвертор, която ми убягва? С инвертор Growatt SPF5000 работи. Някакъв съвет? Благодаря предварително.
Borgbus.FB wrote on Will Prowse's profile.
I bought an European type 220v

2500w 24v MPP Solar inverter 80A MPPT solar charger high PV450V batteryless . I have ten used panels 250w.a 5k step up/down transformer.a u.s. 3250w generator.4chins 12v100ah.I'm thinking I can run the generator to the transformer into 110 and 220 out to the mppt. Then mppt 220 out to transformer for 110 for my use . ??​

Hi I have felicity lpba 48/170A And inverter 8kw voltronic 3ed generation
But i have problem with commucation (bms) between battery and inverter Please can u send me the right way to do the communication / note : i made a special cable rs485 as instructions in user manual/
Thanks
Hi everyone
Unsure if this problem has been raised before.
I noticed a discrepancy between the voltage reading on my solar charged controller and the Battery meter reading
On my charged controller the voltage is 26.4 whereas on the battery the voltage reading is 26.8.
I am unsure if a difference of 0.1 or 0.2. Is acceptable .Can anyone helps please.thanks

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