As part as my DIY powerwall journey, I have some questions.
As it may help others, I will try to organize them.
Working with used laptop battery packs
- From your experience, what is the dead cell ratio found ?
- Is there some brands, models of cells to be avoided ?
Building packs
- For a 48v pack, my calculation gave me 13S setup (48/3.7). I saw you are with 14S setups. Why this difference ?
- I heard about double fusing. I am not sure to understand this one quite well. Is there any link to explain it ?
- What is your recommendation of power per pack and why ? (I mean 5 kWh, 10, 15, ...)
- Is there a lower limit for cells capacity not to go for ?
- What if mixing cells of various capacity in the same pack ? Does the lower one drive the whole pack ?
Thank you
As it may help others, I will try to organize them.
Working with used laptop battery packs
- From your experience, what is the dead cell ratio found ?
- Is there some brands, models of cells to be avoided ?
Building packs
- For a 48v pack, my calculation gave me 13S setup (48/3.7). I saw you are with 14S setups. Why this difference ?
- I heard about double fusing. I am not sure to understand this one quite well. Is there any link to explain it ?
- What is your recommendation of power per pack and why ? (I mean 5 kWh, 10, 15, ...)
- Is there a lower limit for cells capacity not to go for ?
- What if mixing cells of various capacity in the same pack ? Does the lower one drive the whole pack ?
Thank you