BT-70757BK

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2.5Ah, Standard BB-2557/U Rechargeable Lithium-Ion Battery

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2.5Ah, Standard BB-2557/U Rechargeable Lithium-Ion Battery (BB-2557/U)

BT-70757BK

This latest configuration of the BB-2557/U is built tougher and runs 14% longer than the BT-70757 version. It is certified by the DOD for Military Use. Typically used in many different devices such as unmanned robots (UGV and UAV's), TACFIRE, and REMBASS

Military#: BB-2557/U
NSN: Conforms to: 6140-01-490-5387
Chemistry#: Li-ion

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● Complies with SMBus v1.1 and SBData v1.1

● UN/DOT 38.3 Rating: 75Wh

● Comparable to: BT-70757, BT-70757A, BT-70757BE, BT-70757BG, BT-70757G, BB-2557/U, and BB-557/U

● Absolute state of charge indicators

Typically used in:

● TACFIRE (AN/PSG-2A & 2B)

● REMBASS (RT-1175A/GSQ)

● AN/PSQ-7

● Unmanned Robots (UGV/UAV)

Size / Weight

Length

4.125 +/- 0.031 in (105 +/- 0.78 mm)
Width

1.437 +/- 0.031 in (37 +/- 0.78 mm)
Height

3.916 +/- 0.031 in (99 +/- 0.78 mm)
Weight

1.2 lb (0.54 kg)

Other

SMBus

Yes
State of Charge Indicator

Yes
Connector

6 Pin Floating Type per U.S. Army DWG #SC-C-179495
Voltage

28.8V, Two (2) Sections each 14.4V
Maximum Voltage

33.6V, Two (2) Sections each 16.8V
Capacity

In 24V Mode: 2.5 Ah, In 12V Mode: 5.0 Ah
Storage Temperature

-40°C to +40°C (-40°F to +104°F)
Operating Temperature

-20°C to +60°C (-4°F to +140°F)

The following are related products that are not included with featured product and sold separately.

Chargers	Adapters
BTC-70801 (SPC, PP-8498/U) BTC-70819 (SPC Lite) BTC-70819-1 (SPC Lite, EU) BTC-70819-3 (SPC Lite, 12V/24V DC) BTC-70844 (SPC, CE)	BTA-70812 (J-6523/P)
BTC-70836 (VMC, PP-8481B/U) BTC-70870 (VMC Lite) BTC-70870-1 (VMC Lite, 24V DC) BTC-70870-3 (VMC Lite, 12V DC)	BTA-70843 (J-6584/U)
BTC-70791-MR (Mid Rate)	(Not Required)
BTK-70822-MR-X (Mid Rate AC/DC Charger Kit - Solar Panel Compatible)	(Not Required)
BTC-70903-MR1 (Full Charge Mid Rate)	(Not Required)
BTC-70824-1 (Charge Controller) BTC-70663 (Advanced Charge Controller)	BTA-70782 (Solar Adapter)
BTC-70824-2 (Multi-Chemistry Battery Cap Charger)	(Not Required)
BTC-70911-4 BTC-70911-5 BTC-70911-7 BTC-70911-9 BTC-70911-10 BTC-70911-11 BTC-70911-12 BTC-70911-13 (FLEX Charger^TM)	(Not Required)

Product downloads

Series Datasheet

SDS

Drawing

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