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News, Announcements, and Rules
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22 307 Pack Builder (Repackr)
07-01-2019, 02:28 AM
by Nemo
Head over and introduce yourself
879 3,550 How does Tesla's Powerwal...
Yesterday, 07:17 AM
by CesarM
Feedback & Suggestions
Any feedback, suggestions, or issues you may find can be reported here.
107 797 3 months error
5 hours ago
by hbpowerwall

Forum Threads Posts Last Post
DIY Battery Project Builds
Share and document your powerwall build journey in a project thread. This section is not for general questions.
425 8,714 w0ss semi DIY powerwall V...
5 hours ago
by Murr
Cell Harvesting, Testing, and Discussion
Discuss anything relating to battery cells. Includes topics like where to find scrap battery packs, cell harvesting, cell testing, and general cell discussions.
Sub Forums:
Cell Data & Specifications
1,524 13,962 DC IR VS AC 1kH IR measur...
38 minutes ago
by Wolf
Battery Pack Design, Planning, and Building
Ready to assemble your first pack? Have questions about which holders or fuses to use? Solder or spot weld? This is the place to be!
840 7,968 Spot Welder for around $5...
Yesterday, 05:43 PM
by jerryki1234
BMS (Battery Management Systems)
Discussions relating to battery management systems. This includes packages like Batrium, custom built DIY solutions, and basic battery monitoring.
474 4,836 BMS Top or Middle
59 minutes ago
by 507PowerWall
Solar Panels, Charge Controllers, and Inverters
Discussions around your solar system, including panels, charge controllers, inverters, and transfer switches. This section also includes wind components.
701 7,126 Charging batteries from t...
4 hours ago
by daromer
General Project, Battery, and Electrical
Anything related to your project, batteries, or electrical topics that doesn't fit in any of the other sections. Also includes news releases.
722 6,905 30 Cell Backup Battery( P...
7 hours ago
by _Olawale_

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Frequently Asked Questions
Documentation intended to help answer some fundamental questions and get your project started!
20 26 Definition: Chinesium
10-16-2019, 11:55 PM
by Crimp Daddy
Downloadable Resources
Contains publicly-released files such as 3D models, PCB layouts, documentation, and much more.
13 13 Kweld electrode holder (r...
11-21-2019, 06:00 AM
by hbpowerwall

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General Hangout
Off topic discussions that are not related to solar and wind projects and/or do not fit in any of the categories above.
242 2,308 Ion battery recycling !!!
07-06-2020, 10:57 AM
by hermitdave
Cryptocoin Discussions
Discussions around any cryptocoin and/or the mining process.
62 386 Power draw
06-24-2020, 07:04 PM
by josemiguel811
Electric Bikes & Cars
Do you have an E-Bike or E-Car project you'd like to share?
78 927 Dala's Leaf buildthread (...
9 hours ago
by jdeadman
Looking to buy or sell something? Please keep it solar and wind-related!
533 2,652 Free - SF Bay Area - 2x u...
Yesterday, 09:32 PM
by floydR

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