LiFePO4 Battery To build 12V/24V/48V System
Series-Only (1P) Configurations 12V & 24V
Series-Only (1P) Configurations 12V, 24V & 48V
2P4s Wiring for 12V batteries (Parallel first)
Voltage = 4 times cell voltage = Nominal 12V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh= Voltage X Battery Ah = 12V x (2 x Cell Ah) = 24 x Cell Ah
8S2P Wiring for 24V Batteries – Series First
Voltage = 8 times cell voltage = Nominal 24V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh= 24V x (2 x Cell Ah) = 48 x Cell Ah
Possible 24V 2P8S Fortune Cell Layouts
Voltage = 8 times cell voltage = Nominal 24V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh= 24V x (2 x Cell Ah) = 48 x Cell Ah
16S2P Wiring for 48V Batteries – Series First
Voltage = 16 times cell voltage = Nominal 48V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh = 48 X (2 x Cell Ah) = 96 x Cell Ah
2P16S Wiring for 48V Batteries – Parallel First
Voltage = 16 times cell voltage = Nominal 48V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh = 48 X (2 x Cell Ah) = 96 x Cell Ah
2P16S Wiring for 48V Batteries – Parallel first (Continued)
Voltage = 16 times cell voltage = Nominal 48V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh = 48 X (2 x Cell Ah) = 96 x Cell Ah
A Couple Possible 12V 3P4S Fortune Cell Layouts
12V 4P4S Fortune Cell Layouts
“Side Tap of main positive and negative”
Notes:
* These are two examples.
However, there are several points along either side that could be the main positive and main negative
* There can be similar side-tap arrangements with the Parallel-first arrangements
In most of the layouts shown in this paper, the Main Positive and Main Negative is at the ‘end’ of the pack. However, there may be cases where the most
convenient place for the main positive and negative is on the side of the pack as shown below
8S3P Wiring for 24V Batteries – Series First
Voltage = 8 times cell voltage = Nominal 24V for LiFePO4
Ah= 2X Cell Ah (assuming balanced Cells)
Wh= 24V x (3 x Cell Ah) = 60 x Cell Ah
4S3P Wiring for 12V batteries (Series First)
Voltage = 4 times cell voltage = Nominal 12V for LiFePO4
Ah= 3X Cell Ah (assuming balanced Cells)
Wh= Voltage X Battery Ah = 12V x (3 x Cell Ah) = 36 x Cell Ah
3P8S (24V) Layouts
4P8S (24V) Layouts
3P16S (48V) Layouts
4P16S (48V) Layouts
