Panasonic B 4S9P Specifications
| Configuration | 4S9P |
| Cell | Panasonic NCR20700B |
| Cell size | 20700 |
| Cell chemistry | |
| Weight | 2.3 kg |
| Length | 18.41 cm |
| Width | 2.25 cm |
| Height | 29.31 cm |
| Charge voltage | 16.80 V |
| End voltage | 10.00 V |
| Capacity | 38250 mAh |
| Maximum continuous discharge current | 10 A |
| Charge current | 5 A |
| Watts | 144 W |
| Energy | 551 Wh |
| Volumetric energy density | 669.72 Wh/L |
| Gravimetric energy density | 242.95 Wh/kg |
| Charge time | 5 hours |
| Operating temperature | -20 ~ 60 °C |
Size Variations
Panasonic B 4S9P 1-layer in parablock 1x9
| Length | 82.26 mm |
| Width | 185.31 mm |
| Height | 73.16 mm |
Panasonic B 4S9P 1-layer in parablock 9x1
| Length | 733.4 mm |
| Width | 22.45 mm |
| Height | 73.1 mm |
Panasonic B 4S9P 2-layer in parablock 3x3
| Length | 123 mm |
| Width | 63.25 mm |
| Height | 146.5 mm |
Panasonic B 4S9P 2-layer in parablock 1x9
| Length | 41.6 mm |
| Width | 185.35 mm |
| Height | 146.5 mm |
Panasonic B 4S9P 2-layer in parablock 9x1
| Length | 367.2 mm |
| Width | 22.55 mm |
| Height | 146.5 mm |
Panasonic B 4S9P 4-layer in parablock 3x3
| Length | 61.91 mm |
| Width | 63.21 mm |
| Height | 293.06 mm |
Panasonic B 4S9P 4-layer in parablock 1x9
| Length | 21.25 mm |
| Width | 185.35 mm |
| Height | 293.1 mm |
Panasonic B 4S9P 4-layer in parablock 9x1
| Length | 184.05 mm |
| Width | 22.55 mm |
| Height | 293.1 mm |
Calculations
Q. How to calculate the voltage for 4S9P Panasonic B pack?
A. Take the nominal voltage of the Panasonic B (3.6V) and multiply it by series connections (4) for a total of 14.40V.
Q. How to calculate the capacity and current for 4S9P Panasonic B pack?
A. Take the nominal capacity of the Panasonic B (4.25Ah) and max. continuous discharge current (20 A) and multiply them by the parallel connections (9) for a total of 38.25Ah and 180A.