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BT-70581CE, CSEL zoom

  • BT-70581CE, CSEL

BT-70581CE (BB-2001A/U)

CSEL Rechargeable Lithium-Ion Battery

Handheld lithium-ion radio battery used in AN/PRQ-7 CSEL (Boeing Combat Survivor Evader Locator Radio). Approved replacement for BT-70581 A & B Models. Over 10% better run-time.

  • Military#: BB-2001A/U
  • NSN: 6140-01-534-3856
  • Chemistry#: Li-ion
  • ● Communicates using a Single Wire DQ interface (on side)

    ● UN/DOT 38.3 Rating: 63 Wh

    ● Comparable to: BT-70581, BT-70581A, BT-70581B, BT-70581Cx, BT-70676Bx, BB-2001A/U, BA-5301A/U,
       BT-70720, BT-70720A, MAI-901017, MAI-901018, MAI-901020, and 4866112-004

    ● Absolute state of charge indicator

    ● Enhanced cold temperature performance

    ● Imersion: tested to 10 meters for 5 minutes, 1 meter for 12 hours


    Typically used in:

    ● AN/PRQ-7 CSEL (Boeing Combat Survivor Evader Locator Radio)

Size / Weight

  • Length

    3.05 +/- 0.01 in (76.45 +/- 0.25 mm)

  • Width

    1.74 +/- 0.01 in (44.20 +/- 0.25 mm)

  • Height

    3.23 +/- 0.01 in (82.04 +/- 0.25 mm)

  • Weight

    0.88 lb (0.40 kg)


  • State of Charge Indicator


  • Connector

    Flat Contacts (side), Fly Wheel Connection (top)

  • Voltage


  • Maximum Voltage


  • Capacity

    5.6 Ah to be constant with spec label marked 4.8 Ah

  • Storage Temperature

    -40°C to +40°C (-40°F to +104°F)

  • Operating Temperature

    -32°C to +60°C (-25.6°F to +140°F)

Customer who bought this item also bought

  • BTF-70581A

    The BTF-70581A can be used for reconditioning of rechargeable batteries or for a deep discharge prior to disposal of primary batteries.

  • Desktop Charger for CSEL

    Dedicated desktop charger that will charge one (1) to two (2) of the CSEL (BB-2001A/U, BT-70791Cx, BT-70581B, BT-70581A, BT-70581 or BT-70676Bx) batteries.

  • BTA-70581A

    This adapter is a two (2) position charge adapter for the CSEL Batteries (Combat Survivor Evader Locator handheld radio) on SPC or SPC Lite Chargers

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