I am unclear on several battery capacity concepts and I hope someone can help me clear them up.
Example18650 Battery:
Voltage: 4v (for quick math)
Max charge: 1 amp
Max discharge: 3 amp
Capacity:2000 mAh
4s:
Voltage:16v
max charge: 1 amp?
max discharge: 3 amp?
capacity: 2000 mAh?
4p:
Voltage: 4v
max charge: 4 amp?
max discharge: 12 amp?
capacity: 8000 mAh
4s4p:
Voltage: 16v
max charge: 4 amp?
max discharge: 12 amp?
capacity: 8000 mAh?
4p Question:
battery 1: 2000mAh
battery 2: 2000mAh
battery 3: 1500mAh
battery 4: 2000mAh
It seems to me that battery 3 is going to cause an overcharge problem. It will reach 4.2v prior to battery 1,2,4. This would also not be managed by a BMS in a 4s4p scenario. I am using an extreme example, but I believe this would be the case even if the individual cells are only 50mAh apart?
Example18650 Battery:
Voltage: 4v (for quick math)
Max charge: 1 amp
Max discharge: 3 amp
Capacity:2000 mAh
4s:
Voltage:16v
max charge: 1 amp?
max discharge: 3 amp?
capacity: 2000 mAh?
4p:
Voltage: 4v
max charge: 4 amp?
max discharge: 12 amp?
capacity: 8000 mAh
4s4p:
Voltage: 16v
max charge: 4 amp?
max discharge: 12 amp?
capacity: 8000 mAh?
4p Question:
battery 1: 2000mAh
battery 2: 2000mAh
battery 3: 1500mAh
battery 4: 2000mAh
It seems to me that battery 3 is going to cause an overcharge problem. It will reach 4.2v prior to battery 1,2,4. This would also not be managed by a BMS in a 4s4p scenario. I am using an extreme example, but I believe this would be the case even if the individual cells are only 50mAh apart?