- Sep 25, 2018
There have been some new developments with the testing board hardware.
No worries I will test with all kinds of scenarios. This will be fun.Tests with more realistic powerwall situations in mind:
* To simulate low voltage shutdowns, stop the discharge at more typical settings (eg. 3.5v and 3.3v). Repeat with 200mA/cell draw.
* To simulate morning transition from battery to solar power, gradually lower draw over an hour or so, smoothly switching over to charging.
I'm expecting virtually no balancing current flowing between the cells, because any balancing current would be overshadowed by the charging current.
Noted!You can add the difference in the grafs in grafana too. So you get a graf showing max deviation if you want
I will prepare the cells for testing and post the results.I would say its most interesting to see
1. All same high qual
2. All same low qual
3. One of each category from good to bad. Lets say 100, 80, 40, 20 mOhm
4. One good rest bad
5. One bad rest good.
6. Different types of cells. Ie Chem types.
The challenge here is not to do the tests. The challenge is to present them so 90% of the people understand the result and not only that the 2% of us working with it understand the outcome and that the rest gets scared or get conclusions that arent correct Like that you can make Lithium "Safe"... You can make it safer but never 100% safe