SE-2057-1, 7.2V 5700mAH


7.2V 5.7Ah (41.04Wh) Lithium Ion Battery

The SE20571NR29 is a 7.2V 5.7Ah (41.04Wh) Lithium ion smart battery which can be designed into a wide range of products and equipment. The battery comprises four 3.6V 2.85Ah 18650 cells in a 2-series, 2-parallel array and can deliver up to 6A of discharge current. The internal battery management system (BMS) is System Management Bus (SMBus) and Smart Battery System (SBS) compliant and can operate as part of a smart battery system along with a compatible smart charger and host device. The BMS provides cell and battery level protection against over-voltage, under-voltage, over-current, short-circuit and over-temperature. The communication interface allows a host device to read pertinent battery data such as Runtime to Empty (minutes), Full Charge Capacity (mAh) and Relative State of Charge (%) which are provided by the impedance tracking fuel gauge. In addition, a wealth of other calculated and static data is available making the battery an active part of any power management system. When connected to a smart charger, the battery broadcasts its required Charging Voltage (mV) and Charging Current (mA) which the charger provides until commanded to stop charging.

Externally, the battery has a UL94V-0 rated plastic enclosure and features an industry standard 5-way connector interface for power and communication. Both right angled and vertical mating connectors are available as accessories. A 5-segment LED display on the top of the battery provides the user with an easy way of viewing remaining battery capacity in 20% segments.

The SE20571NL29 meets the requirements of UN38.3 (transportation), is CE marked and RoHS / WEEE compliant.

Model : SE20571NR29


Part number:SE20571NR29
Chemistry Lithium Ion (Li-Ion)
Nominal Voltage (V)7.2
Nominal Capacity (mAh)5700
Nominal Energy (WH)41.04WH
Max. Discharge current (A)6.0A
Max. Discharge power (W)43.2W
Max. Charging Voltage (V)7.4V
Max. Charging Current (A)2.6A
Visual state of charge indicator5-Segment LED
CommunicationSMBus v1.1
Data SystemSBS v1.1
Operating Temperature, Charge-20°C to +55°C
Operating Temperature, Discharge-20°C to +55°C
Operating Temperature, Storage-20°C to +55°C
Recommended Storage Temperature+15°C to +25°C
Housing:ABS Plastic, UL94V-0
Length (maximum):85.0 ± 0.5 mm
Width (maximum):77.4 ± 0.5 mm
Height (maximum):22.5 ± 0.5 mm
Recommended cavity cross section:79.0 x 24.0 mm
Weight (typical):280 ± 20 gm
Colour:White / Black / Grey
Connector:5.0 mm pitch receptacle
Over charge protection:Yes
Over discharge protection:Yes
Over current protection:Yes
Over temperature protection:Yes
Cell balancing function:Yes
Short-circuit protection:Yes
Reverse polarity protection:Yes
EMI protection:Yes
ESD protection:Yes
ISO 9001:2015 certifiedYes
ISO 13485:2016 certified:Yes
Material Safety Data Sheet:Yes
CE compliant:Yes
UN 38.3 certified:Yes
BIS 16046:2015 certifiedPending
IEC 62133:2012 certifiedPending
UL 2054 certified:Custom option (contact us)
MIL-STD-810E compliant:Custom option (contact us)
MIL-STD-461C compliant:Custom option (contact us)
JSS-55555 compliant:Custom option (contact us)
  •  Tested & certified to redundant safety standards.
  •  Ready to fit in. No extra development cost.
  •  Smart battery system compliant to SBS v1.1
  •  SMBus v1.1 communication support.
  •  5-Segment LED State of Charge (SoC) indicator.
  •  UL-94 V-0 rated ABS enclosure.
  •  Industry standard 5 pin connector.
  •  JEITA charging profile optimization.
  •  ESD protection up to 8kV
  •  SHA-1 cryptosystem to prevent plagiarism
  •  UL certified INR-18650 2.9Ah Lithium-Ion cells
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