Overkill Solar BMS Series - Appendix A: Recommended Parameters; A.1 General Settings for LiFePO4 Batteries

Appendix
Appendix A: Recommended Parameters
Recommended parameters for specific battery types are given in Appendix B. General settings are listed
below.
A.1 General Settings
Recommended generic settings can be found below. These settings assume LiFePO4 batteries. They can be
used as a starting point.

Capacity configuration:
Parameter
Value
Units
Designed capacity
This should be the rated capacity of your
battery in milliamps (multiply the
amp-hours of your pack by 1000)

Examples:
50 Ah pack: 50000
60 Ah pack: 60000
100Ah pack: 100000
200 Ah pack: 200000
280 Ah pack: 280000
mAh
Cycle capacity
This should be roughly 80% of the value
above.

Examples:
50 Ah pack: 40000
60 Ah pack: 48000
100Ah pack: 80000
200 Ah pack: 160000
280 Ah pack: 224000
mAh
Full charge voltage (per cell)
3500
mV
End of discharge voltage (per cell)
2800
mV
Discharge rate
0.2
%
80% capacity voltage (per cell)
3400
mV
60% capacity voltage (per cell)
3300
mV
40% capacity voltage (per cell)
3200
mV
20% capacity voltage (per cell)
3100
mV

Balance Configuration

● Balancer start voltage: 3400 mV