jesusangel
Member
- Joined
- May 28, 2017
- Messages
- 277
I do not want to bore everyone with stories of what happened after I decided to build my powerwall so far, I may from now on when I do some updating I will be more detailed but summarizing everything is not fun and I feel a bit lazy today. So let's get down to the facts:
Cells, + - 100 collected here and there and + -700 bought tosabadothrough this forum (120 Dell laptop batteries).
Test equipment 8 tp4056 and 2 Opus BT-C3100.
Cell holders, I liked the idea of Average Joe, pvc pipesince I work in a company in the sector and had easy access to these materials but it is difficult to find pipe by its interior measurement so I discarded it and bought the holderswe all haveat aliexpress, but the seller had problems and after 12 days since he placed the order as shipped without being I had to cancel it. Finally a friend is making me the holderswith his 3d printer, he says he does not care and it's cheap, we'll see what he thinks after havedone the 42 I need initially.
About the fuses I also liked the choice ofAverage Joe, so I bought them. I've made my first test with cells with less than 1000mAh.
Yes I know,the same problem of cold joins, tomorrow I will receive a 100w soldering Iron.
I plan to use the owitte's system because I like it, I have easy access to copper pipes and a free wall .
I will try to make some kind of BMS with an ESP32, have enough analog inputs for 14S, at least will monitor it, to balance is another problem...
It took me a month to process the cells, now I only have to give a second pass and see if any lose the charge after a month to discard it.
On panels and inverter I'm still thinking.
Cells, + - 100 collected here and there and + -700 bought tosabadothrough this forum (120 Dell laptop batteries).
Test equipment 8 tp4056 and 2 Opus BT-C3100.
Cell holders, I liked the idea of Average Joe, pvc pipesince I work in a company in the sector and had easy access to these materials but it is difficult to find pipe by its interior measurement so I discarded it and bought the holderswe all haveat aliexpress, but the seller had problems and after 12 days since he placed the order as shipped without being I had to cancel it. Finally a friend is making me the holderswith his 3d printer, he says he does not care and it's cheap, we'll see what he thinks after havedone the 42 I need initially.
About the fuses I also liked the choice ofAverage Joe, so I bought them. I've made my first test with cells with less than 1000mAh.
Yes I know,the same problem of cold joins, tomorrow I will receive a 100w soldering Iron.
I plan to use the owitte's system because I like it, I have easy access to copper pipes and a free wall .
I will try to make some kind of BMS with an ESP32, have enough analog inputs for 14S, at least will monitor it, to balance is another problem...
It took me a month to process the cells, now I only have to give a second pass and see if any lose the charge after a month to discard it.
On panels and inverter I'm still thinking.