EU BY02 battery, rechargeable BY02 Li-ion battery pack

Please carefully check your original battery to ensure that the model number is BY02, and battery voltage, battery shape, battery connector position, and screw hole locations match our battery shown below.

BY02 battery, 3.7V 21.00Wh

Battery Code:NHPBY0221WHB2
Battery Name:BY02 battery
Battery Type: Lithium-ion
Battery Volt: 3.7V
Battery Capacity: 21.00Wh
Battery Color: Black
Battery Cells: Grade A, 2 Cells
Battery Condition: original/genuine 1 Year Warranty
Compatible Battery Models:[ 738676-541 ], [ BY02 ], [ BY02021 ], [ HSTNH-C13C ], [ HSTNH-C13C-S ],
  • In stock
  • Original price: € 44.54
  • Today's price:
    € 31.18
    (Updated: Aug 2026 In stock)
  • You save: € 13.36
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HP HSTNN-C121C-S BY02 Battery 3.7V 21Wh
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