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Out of 2 batteries, it appears that we have 42-44% capacity left. 
Battery Pack Tests 4S8P
Battery
Comments
Overcharged maybe
WTF? -
| Pack | Original Capacity | Starting Voltage | Final Voltage | Capacity (mAh) | % Capacity | ~Capacity/Cell |
|---|
| Notes | |||||||
|---|---|---|---|---|---|---|---|
| 2 | 20Ah | 14.4 (3.6v/cell) | 8v | 10156 | 51% | 1270 mAh | |
| 3 | 20Ah | 14.4 (3.6v/cell) | 8v | 10926 | 55% | 1366 mAh |
| Could the battery be overcharged? | |||||||
| 3 | 8v | 9791 | 49% | 1224 mAh | |||
| 3 | 8.49v | 7727 | 39% | 965 mAh | BMS Added. | ||
| 3 | 8.55v | 6315 | 32% | 789 mAh |
Charging via power may be the issue? Discovered that I had connected the cell voltage connectors in the wrong order. | |||||||
| 3 | Cells balanced before test |
Notes:
Battery pack #1
- was disassembled into singles in order to to test single batteries.
Battery Pack #3:
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:
- BMS will disconnect at 8.4v which is higher than what we tested at previously.We are charging on the P- connection. Maybe this is causing some of the protection circuitry to activate.
BMS
Size: 87*35*8 (MM)
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- Will disconnect at 8.4v which is higher than what we tested atWe are charging on the P- connection. Maybe this is causing some of the protection circuitry to activate.
Packaging Options
Example 4S20P
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