LG HD2C 4S21P Specifications
| Configuration | 4S21P |
| Cell | LG 18650HD2C |
| Cell size | 18650 |
| Cell chemistry | |
| Weight | 4.0 kg |
| Length | 2.11 cm |
| Width | 42.64 cm |
| Height | 27.27 cm |
| Charge voltage | 16.80 V |
| End voltage | 10.00 V |
| Capacity | 44100 mAh |
| Maximum continuous discharge current | 10 A |
| Charge current | 5 A |
| Watts | 146 W |
| Energy | 644 Wh |
| Volumetric energy density | 437.67 Wh/L |
| Gravimetric energy density | 159.72 Wh/kg |
| Charge time | 5 hours |
| Operating temperature | -20 ~ 70 °C |
Size Variations
LG HD2C 4S21P 1-layer in parablock 1x21
| Length | 81.66 mm |
| Width | 426.36 mm |
| Height | 68.06 mm |
LG HD2C 4S21P 1-layer in parablock 7x3
| Length | 566.46 mm |
| Width | 62.76 mm |
| Height | 68.06 mm |
LG HD2C 4S21P 1-layer in parablock 21x1
| Length | 1697.6 mm |
| Width | 22.3 mm |
| Height | 68 mm |
LG HD2C 4S21P 2-layer in parablock 3x7
| Length | 122.1 mm |
| Width | 143.6 mm |
| Height | 136.3 mm |
LG HD2C 4S21P 2-layer in parablock 7x3
| Length | 283.7 mm |
| Width | 62.8 mm |
| Height | 136.3 mm |
LG HD2C 4S21P 2-layer in parablock 1x21
| Length | 41.3 mm |
| Width | 426.4 mm |
| Height | 136.3 mm |
LG HD2C 4S21P 2-layer in parablock 21x1
| Length | 849.26 mm |
| Width | 22.36 mm |
| Height | 136.26 mm |
LG HD2C 4S21P 4-layer in parablock 3x7
| Length | 61.5 mm |
| Width | 143.6 mm |
| Height | 272.7 mm |
LG HD2C 4S21P 4-layer in parablock 7x3
| Length | 142.3 mm |
| Width | 62.8 mm |
| Height | 272.7 mm |
LG HD2C 4S21P 4-layer in parablock 21x1
| Length | 425.1 mm |
| Width | 22.4 mm |
| Height | 272.7 mm |
LG HD2C 4S21P 4-layer in parablock 1x21
| Length | 21.1 mm |
| Width | 426.4 mm |
| Height | 272.7 mm |
Calculations
Q. How to calculate the voltage for 4S21P LG HD2C pack?
A. Take the nominal voltage of the LG HD2C (3.65V) and multiply it by series connections (4) for a total of 14.60V.
Q. How to calculate the capacity and current for 4S21P LG HD2C pack?
A. Take the nominal capacity of the LG HD2C (2.10Ah) and max. continuous discharge current (20 A) and multiply them by the parallel connections (21) for a total of 44.10Ah and 420A.