Panasonic B 3S7P Specifications
| Configuration | 3S7P |
| Cell | Panasonic NCR20700B |
| Cell size | 20700 |
| Cell chemistry | |
| Weight | 1.3 kg |
| Length | 14.33 cm |
| Width | 2.25 cm |
| Height | 21.98 cm |
| Charge voltage | 12.60 V |
| End voltage | 7.50 V |
| Capacity | 29750 mAh |
| Maximum continuous discharge current | 10 A |
| Charge current | 5 A |
| Watts | 108 W |
| Energy | 321 Wh |
| Volumetric energy density | 668.85 Wh/L |
| Gravimetric energy density | 242.63 Wh/kg |
| Charge time | 5 hours |
| Operating temperature | -20 ~ 60 °C |
Size Variations
Panasonic B 3S7P 1-layer in parablock 7x1
| Length | 428.15 mm |
| Width | 22.45 mm |
| Height | 73.1 mm |
Panasonic B 3S7P 2-layer in parablock 1x7
| Length | 41.6 mm |
| Width | 144.65 mm |
| Height | 146.5 mm |
Panasonic B 3S7P 2-layer in parablock 7x1
| Length | 285.8 mm |
| Width | 22.55 mm |
| Height | 146.5 mm |
Panasonic B 3S7P 3-layer in parablock 1x7
| Length | 21.21 mm |
| Width | 144.61 mm |
| Height | 219.76 mm |
Panasonic B 3S7P 3-layer in parablock 7x1
| Length | 143.31 mm |
| Width | 22.51 mm |
| Height | 219.76 mm |
Calculations
Q. How to calculate the voltage for 3S7P Panasonic B pack?
A. Take the nominal voltage of the Panasonic B (3.6V) and multiply it by series connections (3) for a total of 10.80V.
Q. How to calculate the capacity and current for 3S7P 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 (7) for a total of 29.75Ah and 140A.