I recently received 8 Lithium Ion NMC battery packs. Here are the battery specifications.
Each cell labeled:
- CA1 060G6
- +3.7 V
- 37.0 Wh
- 10000 mAh
- BM1740310368
Some of these tested at 12V and some at 16V.
Each cell is labeled as 3.7 W nominal, however, some of the cells are testing at 3.01V (those are the packs testing at 12V) seen labeled here:


Questions:
Is the difference in voltage an indicator that some of these cells may be bad?
When individual cells are charged at 4.0V (my preference for > cycles) each pack will be 16V. If I wanted to connect these to a Sol-Ark for storage, would I be able to connect 3 in series for a 48V pack?
I have 8 total packs, so I think the ideal arrangement would be:
2p / 3s(48V)
This would only use 6 of the 8 packs. Is there a way to incorporate the remaining 2 packs?
Another option I see is that it appears each of the packs (currently arranged in 4 rows of 14 cells) can be separated into 4 rows of 7 cells). In this case I would have 16 smaller packs rated at 16V if placed in parallel. If done this way I could have:
5p / 3s(48V)
Would this be correct or am I at risk of burning my house down with this logic?
What would the BMS look like in such a build?
Would you feel safe with a Lithium Ion NMC battery bank inside your home?
I realize I've been asking a lot of questions on this forum... that is because I'm over my head and could use some help that can't be found on youtube or any other media that I'm aware of.
I'm happy to pay a consulting fee to an expert that can help guide me through building this battery bank safely.
Each cell labeled:
- CA1 060G6
- +3.7 V
- 37.0 Wh
- 10000 mAh
- BM1740310368
Some of these tested at 12V and some at 16V.
Each cell is labeled as 3.7 W nominal, however, some of the cells are testing at 3.01V (those are the packs testing at 12V) seen labeled here:


Questions:
Is the difference in voltage an indicator that some of these cells may be bad?
When individual cells are charged at 4.0V (my preference for > cycles) each pack will be 16V. If I wanted to connect these to a Sol-Ark for storage, would I be able to connect 3 in series for a 48V pack?
I have 8 total packs, so I think the ideal arrangement would be:
2p / 3s(48V)
This would only use 6 of the 8 packs. Is there a way to incorporate the remaining 2 packs?
Another option I see is that it appears each of the packs (currently arranged in 4 rows of 14 cells) can be separated into 4 rows of 7 cells). In this case I would have 16 smaller packs rated at 16V if placed in parallel. If done this way I could have:
5p / 3s(48V)
Would this be correct or am I at risk of burning my house down with this logic?
What would the BMS look like in such a build?
Would you feel safe with a Lithium Ion NMC battery bank inside your home?
I realize I've been asking a lot of questions on this forum... that is because I'm over my head and could use some help that can't be found on youtube or any other media that I'm aware of.
I'm happy to pay a consulting fee to an expert that can help guide me through building this battery bank safely.
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