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A very critical process step in the fabrication of lithum Ion chemistry batteries, including LiFePO4 battery, is the initial formation of the Solid Electrolyte Interface (SEI) layer. It is crucial in protecting electrolyte from chemical decomposition facilitating long cycle life of battery...

I can recommend a relatively inexpense buck converter to triple your output current from a typical 30v 5 amp power supply for LFP top balancing. You can even use an old computer power supply 12v output to feed the buck converter. The buck converter is SZBK07 based on LM25116 synchronous buck...

Panels subjected to regular shading conditions are prone to have blown out open bypass diodes. Bypass diode can fail open or short but most often they get overheated and fail open. A shorted bypass diode is easy to detect as Voc of panel will be low due to the shorted bypass diode shorting...

New office air conditioners installed after Chinese province ordered electric power consumption cutback.

Clean and dry surfaces with 91% isopropyl alcohol. Keep fingers off of contact surfaces.

I took the data posted by "Andy's Off-Grid Garage" and imported .csv files into Excel to produce attached graphs with additional important parameters noted. The graphs in the .pdf file are for two 304AH and four 280AH cells Andy provided charge and discharge .csv files. The graphs are on...

'Offgrid Van Life' just release his final of three Youtube videos on his testing of the 420 AH cells. Same physical size as the 280 AH cells. The weight was actually a little less at 5.1x Kgs. The final numbers on four cells ranged from 240 AH to 244 AH. Surprise, Surprise. He jokingly...

https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf

I am not a big fan of Mike Holt as many times he is like listening to a patent lawyer arguing engineering details, but I do agree with him on auxiliary grounding rods, particularly on PV panel arrays. The main contention is NEC requirements are dangerous.

I did a thermodynamic simulation some time back on the 16S/24S JK active balancer BMS. I was not confident in my thermal resistance calculations on the irregular MOSFET epoxy plastic topside surfaces. Then I saw Andy's (Off-Grid Garage) video where he smoked the new 4S/8S JK BMS, drawing about...

If you have not already seen, there is a new BT active balancer that is DC-DC converter to supercap storage similar to the much more expensive unit that has been on market for some time. It allows balancing to be restricted to near top end of charging so it avoids most of the cell overvoltage...

I have noticed that my enclosures are being tagged at bottom right hand corner with 'diysolarforum.com'. What legal advice did you receive causing you to do this? It would seem you are more likely to open yourself to copyright infringements if someone posts a copyrighted picture they clipped...