LG B4 5S8P Battery Pack

ICR18650B4, 21Ah, 18.0V, 5A

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LG B4 5S8P Specifications

Configuration 5S8P
Cell LG ICR18650B4
Cell size 18650
Cell chemistry
Weight 1.9 kg
Length 16.25 cm
Width 3.14 cm
Height 33.89 cm
Charge voltage 21.00 V
End voltage 13.75 V
Capacity 20800 mAh
Maximum continuous discharge current 5 A
Charge current 5 A
Watts 90 W
Energy 374 Wh
Volumetric energy density 554.91 Wh/L
Gravimetric energy density 194.79 Wh/kg
Charge time 5 hours
Operating temperature -20 ~ 60 °C

Size Variations

LG B4 5S8P 1-layer in parablock 1x8

Length 112.2 mm
Width 162.5 mm
Height 67.7 mm

LG B4 5S8P 1-layer in parablock 4x2

Length 404.86 mm
Width 51.56 mm
Height 67.66 mm

LG B4 5S8P 1-layer in parablock 8x1

Length 808.8 mm
Width 31.3 mm
Height 67.6 mm

LG B4 5S8P 2-layer in parablock 2x4

Length 132.4 mm
Width 81.7 mm
Height 135.5 mm

LG B4 5S8P 2-layer in parablock 4x2

Length 243.3 mm
Width 51.6 mm
Height 135.5 mm

LG B4 5S8P 2-layer in parablock 1x8

Length 71.8 mm
Width 162.5 mm
Height 135.5 mm

LG B4 5S8P 2-layer in parablock 8x1

Length 485.66 mm
Width 31.36 mm
Height 135.46 mm

LG B4 5S8P 3-layer in parablock 2x4

Length 92 mm
Width 81.7 mm
Height 203.3 mm

LG B4 5S8P 3-layer in parablock 4x2

Length 162.5 mm
Width 51.6 mm
Height 203.3 mm

LG B4 5S8P 3-layer in parablock 1x8

Length 51.6 mm
Width 162.5 mm
Height 203.3 mm

LG B4 5S8P 3-layer in parablock 8x1

Length 324.1 mm
Width 31.4 mm
Height 203.3 mm

LG B4 5S8P 5-layer in parablock 2x4

Length 51.56 mm
Width 81.66 mm
Height 338.86 mm

LG B4 5S8P 5-layer in parablock 4x2

Length 81.66 mm
Width 51.56 mm
Height 338.86 mm

LG B4 5S8P 5-layer in parablock 1x8

Length 31.4 mm
Width 162.5 mm
Height 338.9 mm

LG B4 5S8P 5-layer in parablock 8x1

Length 162.5 mm
Width 31.4 mm
Height 338.9 mm

Calculations

Q. How to calculate the voltage for 5S8P LG B4 pack?

A. Take the nominal voltage of the LG B4 (3.6V) and multiply it by series connections (5) for a total of 18.00V.

Q. How to calculate the capacity and current for 5S8P LG B4 pack?

A. Take the nominal capacity of the LG B4 (2.60Ah) and max. continuous discharge current (3.75 A) and multiply them by the parallel connections (8) for a total of 20.80Ah and 30A.

Built by Voltaplex Energy

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