Select products now available online for purchase  

BT-70557 zoom

BT-70557 (BB-557/U)

Rechargeable, Nickel Cadmium Battery

Typically Used in: AN/PSG-2A and 2B (Tacfire), Data Acquisition Unit (DAU, DTS)

  • Military#: BB-557/U
  • NSN: 6140-01-071-5070
  • Chemistry#: Ni-Cd
  • ● Comparable to: BB-2557/U, BT-70757, and BA-5557/U

    Typically used in:
    ● AN/PSG-2A and 2B (Tacfire)
    ● Data Acquisition Unit (DAU, DTS)

Size / Weight

  • Length

    4.1 in (105 mm)

  • Width

    1.4 in (37 mm)

  • Height

    3.9 in (100 mm)

  • Weight

    1.5 lb (0.68 kg)


  • Connector

    Floating type per U.S. Army DWG # SC-C-179495

  • Voltage

    24.0 V, Two (2) Sections each 12 V

  • Maximum Voltage

    30.0 V, Two (2) Sections each 15 V

  • Capacity

    0.95 Ah

  • Storage Temperature

    -40°C to +40°C (-40°F to 104°F)

  • Operating Temperature

    –20°C to +55°C (-4°F to +131°F)

  Featured Videos

No Videos yet...

No Videos yet...

Ask a Power Expert

Our Power Experts Are Here to Help

Still have questions? Contact one of our engineers or sales managers for help.

Ask a Question

Resource and Support

  • FAQs

    Check our Frequently Asked Questions page for quick answers.

    View FAQ's

  • Battery Disposal and Safety

    For more information on battery disposal and safety including MSDS sheets.

    See More

  • Software Updates

    Check here to make sure you have the most up to date software for your battery charger

    See More