SES SE-2015 User manual

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User Manual
Rechargeable Smart Lithium Ion Battery
SE-2015
User’s Manual
Reference Part Numbers for Battery Model SE-2015
SE20150NR29 10.8V 5.7AH, 61.56Wh
Statement of Confidentiality
The information contained within this document is confidential and
proprietary to Sealed Energy Systems. This information should not, in
whole or in part, be reproduced, disclosed or used except as
expressly and duly authorized by Sealed Energy Systems.

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TABLE OF CONTENTS
1. REVISION HISTORY 3
2. INTRODUCTION 3
2.1. SCOPE 3
2.2. BATTERY PACK OVERVIEW 3
2.3. GENERAL PRECAUTIONS 4
2.3.1. Handling 4
2.3.2. Charge & Discharge 4
2.3.3. Storage 4
2.3.4. Disposal 5
2.3.5. Comply with Waste Regulation 5
3. REQUIREMENTS 6
3.1. GENERAL REQUIREMENTS 6
3.1.1. Nominal Voltage 6
3.1.2. Rated Capacity 6
3.1.3. Initial Impedance 6
3.1.4. Discharge 7
3.1.5. Charge 8
3.1.6. Storage 9
3.1.7. Terminal Specifications 9
3.2. FUEL-GAUGE ELECTRONICS 9
3.2.1. Overview of Operation 9
3.2.2. DC Specifications 11
3.2.3. Measurement Accuracy 11
3.3. SMBUS AND SBD PARAMETERS 12
3.3.1. Overview of Operations 12
3.3.2. SMBus Logic Levels 12
3.3.3. SMBus Data Protocols 12
3.3.4. SMBus Host-to-Battery Message Protocol 13
3.3.5. SMBus Battery-to-Charger Message Protocol 14
3.3.6. SMBus Battery Critical Message Protocol 15
3.3.7. Host to Battery Messages (Slave Mode) 15
3.3.8. Battery to Charger Messages (Master Mode) 17
3.3.9. Critical Messages (Master Mode) 17
3.3.10. Pack Calibration Cycle 19
3.4. PROTECTION ELECTRONICS 19
3.4.1. Overview of Operation 19
3.4.2. Charge Protection 19
3.4.3. Discharge Protection 20
3.4.4. Short-Current Protection 20
3.5. PASSIVE SAFETY PROTECTION 21
3.5.1. Overview of Operation 21
3.5.2. Thermal Fuse 21
3.6. MECHANICAL SPECIFICATIONS 21
3.6.1. Weight 21
3.6.2. Mating Connector 21
3.6.3. Packaging 21
3.7. ENVIRONMENTAL/SAFETY SPECIFICATIONS 21
3.7.1. EMC and Safety 21
3.8. RELIABILITY 22
3.8.1. Life Expectancy 22
3.8.2. Warranty 22
3.8.3. Shelf Life 23
4.0. MECHANICAL DRAWING 24

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1. REVISION HISTORY 2. INTRODUCTION
2.1 Scope
This specification describes the physical, functional and electrical
characteristics of a rechargeable Lithium Ion battery SE-2015 by
Sealed Energy Systems (SES®). This specification is the interface
document between SES® and its customers. It is understood that the
customer may create their own internal specification. However, this
specification is the master that defines the battery’s operation.
2.2 Battery Pack Overview
This specification describes the physical, functional and electrical
requirements for the SE20150NR29 Smart Battery including a
rechargeable Lithium Ion battery and a Battery Management Module.
The battery consists of six (06) Lithium Ion rechargeable cells of INR-
18650 size, assembled in a 3 series / 2 parallel (3S2P) configuration.
Each cell has an average voltage of 3.6V and a typical capacity of
2.85Ah giving a battery pack of 10.8V and 5.7Ah typical.
The battery is capable of communicating with host or the charger
through the System Management Bus (SMBus). The battery is fully
SMBus and SBDS Revision 1.1compliant. Protection is provided for
over-charge, over-discharge and short circuit. For redundancy,
passive safety devices have been integrated into the pack to protect
against over- current and over-temperature, and secondary
overvoltage has been implemented with a logic-fuse and controller.
The battery pack comprises the individual elements as shown below:
Revision
Release
Date
Revisions
Issued
Approved
1.0
20/10/2019
Released
SES
MGM
1.2
08/01/2020
Certificate of
compliance, EU REACH
Regulation no.
1907/2006 article 33(1)
contents of all SCHV
<0.1% w/w
INTERTEK
MGM
1.3
08/01/2020
Certificate of
compliance, REACH
Ann-II of 2011/ 65/EU
and adm EU 2015/863
INTERTEK
MGM
1.4
29/01/2020
BIS, Certificate of
Registration issue on IS
16046-2:2018
INTERTEK
MGM
1.5
-
Certificate of
Compliance issued on
UN38.3 and IEC/
EN 62281
NEMKO
P
1.6
-
Certificate of
Compliance issued on
IEC/EN 62133-2:2017
NEMKO
P

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2.3 General Precaution
2.3.1 Handling
Avoid shorting the battery. Do not immerse in water.
Do not disassemble or deform the battery
Do not expose to, or dispose of the battery in fire.
Avoid excessive physical shock or vibration.
Keep out of the reach of children.
Avoid storage in direct sunlight.
Do not short-circuit a battery.
In the event of a battery leaking, do not allow the liquid to
come in contact with the skin or eyes. If contact has been
made, wash the affected area with copious amounts of water
and seek medical advice. Keep batteries clean and dry.
Secondary batteries need to be charged before use.
When possible, remove the battery from the equipment when
not in use.
Do not store batteries longer than 1 month in discharged
state. Do not storage batteries longer than 1 year without
recharge.
2.3.2 Charge & Discharge
Battery must be charged in appropriate charger only.
Never use a modified or damaged charger.
Specified product use only.
Operating Temperature
For Charge: 0OC to +45OC
For Discharge: -20OC to +55OC
2.3.3 Storage
Store in a cool, dry and well-ventilated area.
Storage Temperature: -20OC to +45OC
Recommender Storage Temperature 20OC + 5OC

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2.3.4 Disposal
Regulations vary for different countries. Dispose of in
accordance with local regulations.
Intact, spent batteries are not considered to be hazardous
waste.
Waste Treatment Methods: Waste Li-Ion batteries meet the
United States federal definition of a solid waste per 40 Code
of Federal Regulations (CFR) 261.2. It is recommended that
the batteries be recycled even though they can be disposed
of in the garbage.
Recycling: Waste Li-Ion batteries do not fall under any specific
RCRA, F, K, P or U lists. The status of scrap Li-Ion batteries
should be confirmed in the nation or US state where disposal
occurs.
2.3.5 Comply with Waste Regulations:
India: Expended battery must be taken for recycling or disposal
at an appropriate collection depot by suitably licensed
contractors in accordance with state and center
government regulations.
USA: Expended batteries are not considered hazardous waste.
Cells and batteries involved in a fire may be considered
to be hazardous waste. Dispose of in accordance with
local, state and federal laws and regulations. Consult
universal/hazardous waste regulations for further
information regarding disposal of spent batteries. If the
internal cells are leaking/broken open, consult hazardous
waste regulations under US Environmental Protection
Agency’s Resource Conservation and Recovery Act
(RCRA), waste code: D003(reactivity). Also, consult state
and local regulations for further disposal requirements.
Canada: Expended battery packs are not considered hazardous
waste. Cells and batteries involved in a fire may be
considered to be hazardous waste. Dispose of in
accordance with local, provincial and federal laws and
regulations. Consult the Canadian Environmental
Protection Act for additional details.
EU: Expended battery pack waste must be disposed of in
accordance with relevant EC Directives and national,
regional and local environmental control regulations. For
disposal within the EC, the appropriate code according to
the European Waste Catalogue (EWC) should be used. EU
Waste Code: 16 06 05 –other batteries and
accumulators.
Australia: Expended battery packs must be taken for recycling or
disposal at an appropriate collection depot by suitably
licensed contractors in accordance with government
regulations.

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Taiwan: Expended battery packs are not considered hazardous
waste. Cells and batteries should be recycled at an
appropriate collection site in accordance with
government regulations.
Japan: Recycling of expended lithium-ion battery packs is
regulated by the Wastes Disposal and Public Cleaning
Law and the Law for Promotion of Effective Utilization.
Brazil: Expended battery packs should be recycled in
accordance to the Natation Solid Waste Policy (PNRS) or
CONAMA in compliance with the directives and
regulations of the National System of Environmental
(SISNAMA).
Malaysia: Lithium-ion cells and batteries are considered scheduled
wastes and must be sent to a proper collection
treatment, recycling and Disposal Centre; Scheduled
Waste Code SW103.
Classification of Waste to comply with Transport Regulations:
Expended Lithium-Ion Battery packs are not considered hazardous
waste. Lithium-ion battery packs that have been involved in a fire
maybe considered hazardous waste and should be marked and
classified as such.
Classification of Waste Packaging Material: Under normal use
packaging is not consider hazardous and should be disposed of in
accordance with local recycling regulations. Packaging that has been
exposed to a damaged leaking cell should be considered hazardous
waste and disposed of in accordance to local rules and regulations.
3 REQUIREMENTS
3.1 General Requirements
3.1.1. Nominal Voltage
The battery nominal operating voltage is 10.8V
3.1.2. Rated Capacity
The initial capacity is 5700mAh (based on a CV charge of
12.6V±50mV with a current limit of 2900mA and 6000mA
discharge to 8.55V @ 25C, within 1 hour of charge).
3.1.3. Initial Impedance
The internal impedance of a fully charged battery shall be
≤175mΩwhen measured across the positive and negative
battery terminals at 1kHz at 20°C.

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3.1.4.Discharge -20C to +60C
Discharge Temperature Limits: As shown below, ≤80%RH
The battery shall be capable of continuous discharge within the
Operating Boundary as shown in the graph below.
Host devices should be designed for a controlled shutdown
following battery notification of termination by the battery
sending TERMINATE_DISCHARGE alarm, prior to protection
circuit cut-off.

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3.1.5. Charge 0 C to 45 C
Charge Temperature Limits: As Shown below, ≤80%RH
The battery shall be capable of continuous charge at 12.6V, as
shown in the graph below. A dedicated level II or level III
smart battery charger is required to charge the battery. Using
this type of charger, the battery will request appropriate
charging Voltage and Current from the smart battery charger.
The FULLY_CHARGED bit in the Battery Status() will be set
when the charging current tapers down under 200mA while
charging at 12.6V.

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3.1.6. Storage
Storage Temperature Limits: -20°C to 60°C, ≤80%RH
The battery should be stored in an environment with low
humidity, free from corrosive gas at a recommended
temperature range <21°C. Extended exposure to temperatures
above 45°C could degrade battery performance and life.
3.1.7. Terminal Specifications
See Mechanical Drawing for orientation of contacts J1-1,5
TERMINAL
LEGEND
DESCRIPTION
1, 2 & 3
(-)
Pack negative terminal for charge and
discharge
4
(S)
Not Used or System Present
5
(C)
Terminal for SMBus clock
6
(D)
Terminal for SMBus data
7
(T)
Temperature of Pack, 10 Ohm
8, 9 & 10
(+)
Pack positive terminal for charge and
discharge
A key slot is also present on each pack for mechanical alignment
adjacent to the positive terminal. The SMBus Clock and data lines
require separate pull-ups to system logic voltage, NOT the
battery voltage. Typically, a 10KΩpull-up resistor is used, but
please refer to the SMBus Specification for additional info.
3.2 Fuel-Gauge Electronics
3.2.1. Overview of Operation
The battery is capable of communicating with host or the
charger through the System Management Bus (SMBus). The
battery is fully SMBus and SBDS Revision 1.1 compliant. An 8-
bit Reduced Instruction Set CPU (RISC) is used to process the
core algorithms and perform operations required for battery
monitoring. Charge and discharge current, cell and pack
voltages, and pack temperature are all measured using an
integrated analog to digital converter at 14-bit to 16-bit
effective resolution.
The battery pack uses a system level approach to optimize the

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performance of the battery. It’s primary functions are to provide
fuel gauging and software based charge control, and to ensure
safe operation throughout the life cycle of the battery.
The fuel gauge determines the State-Of-Charge (SOC) by
integrating the input and output current and using impedance
tracking to accurately track the available capacity of theattached
battery. To achieve the desired fuel-gauge accuracy, high-
performance analog peripherals are used to monitor capacity
change, battery impedance, open-circuit voltage and
temperature. These factors are continually applied to account for
battery non-linearity and environmental conditions. This
approach provides the user a meaningful and repeatable
capacity measure with minimal risk of overstating run time.
Visually, the SOC can be obtained from the four on-pack LED’s
with push- button activation.
Charge control is used to provide optimal and safe charging
requests to an SMBus level II or level III charger.
The system has three modes of operation; normal, sleep and
shutdown. In normal mode, measurements, calculations,
protection decisions and data updates are made on 1 sec
intervals. Between these intervals, the electronics enters a
reduced power mode. Sleep mode is entered when the system
senses no host or charger present. While in this mode, battery
parameters continue to be monitored at regular intervals. The
system will continue in this mode until it senses host activity
(communications or current flow). Shutdown mode occurs when
the battery voltage falls below 2.3V/parallel cell group. In this
mode, parasitic current is reduced to a minimum by shutting
down the micro- controller and all associated circuitry. If this
should happen, the battery will require an initial low current
charge to bring the battery voltage back up before normal
operation will resume.
The battery pack block diagram is shown below.

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3.2.2. DC Specifications
PARAMETER
LIMITS
REMARKS
Active mode current
consumption
<650µA
When a host is detected
(charging, discharging or
communications)
Standby mode current
consumption
<140µA
When no host activity is
detected
Shut-down mode
current consumption
<1µA
Any cell voltage falls below
2300mV
3.2.3. Measurement Accuracy
3.2.3.1. Voltage
The voltage measurements have a resolution of 1mV. The
absolute accuracy of the reading is ±0.7% over the operating
range. Note that measurements are made at the cell stack (not
the pack connector). Therefore, internal resistance drops due
to the shunt, safety components, and contact resistance are
not taken into consideration.
3.2.3.2. Temperature
The internal pack temperature is measured by an NTC
thermistor attached to the cell stack. Temperature
readings have a resolution of 0.1°K. The absolute
accuracy is ±3°K over an operating range of -20°C to
+80°C.
3.2.3.3. Current
The current measurements have a resolution of 1mA. The
absolute accuracy of the reading is ±0.7% or ±3mA
whichever is greater over the operating range. A guard
band has been imposed around zero current (-3mA to
+3mA).
3.2.4. LED Indication
The battery can directly display the capacity information.
The battery capacity is displayed as the relative SOC.
Each LED segment represents 25 percent of the full
charge capacity. The LED pattern definition is given in the
table below. The LED’s illuminate for 4 seconds following
switch activation. If the battery voltage is too low, there
will be no LED indication.

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RSOC
LED1
LED2
LED3
LED4
LED5
NOTE
At below 10%
Blinks
11%-20%
Lit for 4
sec
when-
ever
switch is
pressed
21%-40%
41%-60%
61%-80%
81%-100%
3.3. SMBus and SBD Parameters
3.3.1. Overview of Operations
The battery is fitted with a microprocessor and associated circuitry for
communication with an external host device and/or smart battery
charger. Reference should be made to the following specifications
when reading this section:
System Management Bus Specification (Rev1.1, Dec11, 1998) with
the exception that it is necessary to wait at least 150uS between
battery message transactions.
Smart Battery Data Specification (Rev1.1, Dec15, 1998)
Smart battery Charger Specification (Rev1.0, June27, 1996)
3.3.2. SMBus Logic Levels
SYMBOLS
PARAMETERS
LIMITS
UNITS
MIN
MAX
Vil
Data/Clock input low voltage
-0.3
0.8
V
Vib
Data/Clock input high voltage
2.1
5.5
V
Vol
Data/Clock output low voltage
0.4
V
3.3.3. SMBus Data Protocols
SMBus Interface complies with SBS Specification Version 1.1.
The battery pack includes a simple bi-directional serial data
interface. A host processor uses the interface to access various
battery pack registers.
The interface uses a command-based protocol, where the
host processor sends the battery address command byte to
the battery pack. The command directs the battery pack to
either store the next data received to a register specified
command byte or output the data specified by the command
byte.

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3.3.4. SMBus Host-to-Battery MessageProtocol
The Bus Host communicates with the battery pack using one of three
protocols:
•Write Word
•Read Word
•Read Block
3.3.4.1.Write Word
The first byte of a Write Word access is the command code. The next
two Bytes are the data to be written. In this example the master
asserts the slave device address followed by the write bit. The device
acknowledges and the master delivers the command code. The slave
again acknowledges before the master sends the data word (low byte
first). The slave acknowledges each byte according to the I²C
specification, and the entire transaction is finished with a stop
condition.
Write Word Protocol
Write Word Protocol w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.4.2 .Read Word
Reading data is slightly more complex than writing data. First the
host must write a command to the slave device. Then it must follow
that command with a repeated start condition to denote a read from
that device's address. The slave then returns two bytes of data.
Note that there is not a stop condition before the repeated start
condition, and that a "Not Acknowledge" signifies the end of the read
transfer.
Read Word Protocol
1
7
1
1
8
1
8
1
8
1
1
S
Battery
Address
Wr
A
Command
Code
A
Data
Byte
Low
A
Data
Byte
High
A
P
1
7
1
1
8
1
1
7
1
1
8
1
8
1
8
1
1
S
Battery
Address
Wr
A
Command
Code
A
S
Battery
Address
Rd
A
Data
Byte
Low
A
Data
Byte
High
A
PEC
!A
P
1
7
1
1
8
1
1
7
1
1
8
1
8
1
1
S
Battery
Address
Wr
A
Command
Code
A
S
Battery
Address
Rd
A
Data
Byte
Low
A
Data
Byte
High
!A
P

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Read Word Protocol w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.4.3.Block Read
The Block Read begins with a slave address and a write condition.
Then it must follow that command with a repeated start condition to
denote a read from that device's address. After the repeated start the
slave issues a byte count that describes how many data bytes will
follow in the message. If a slave had 20 bytes to send, the first byte
would be the number 20 (14h), followed by the 20 bytes of data. The
byte count may not be 0. A Block Read can transfer a maximum of 32
bytes.
Block Read
Block Read w/ PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.5. SMBus battery-to-Charger Message Protocol
The Smart Battery, acting as an SMBus master will dynamically alter
the charger characteristics of the Smart Charger, behaving as an
SMBus slave using the SMBus Write Word protocol. Communication
begins with the Smart Charge’s address, followed by a Command
Code and a two bytes value. The Smart Charger adjust its output to
correspond with the request.
1
7
1
1
8
1
8
1
8
1
8
1
1
S
Battery
Address
Wr
A
Command
Code
A
Data
Byte
Low
A
Data
Byte
High
A
PEC
A
P
1
7
1
1
8
1
1
7
1
1
S
Battery
Address
Wr
A
Command
Code
A
S
Battery
Address
Rd
A
…
8
1
8
1
8
1
8
1
1
Byte count
=N
A
Data
Byte 1
A
Data
Byte 2
A
≈
Data
Byte N
!A
P
1
7
1
1
8
1
1
7
1
1
S
Battery Address
Wr
A
Command Code
A
S
Battery Address
Rd
A
8
1
8
1
8
1
8
1
8
1
1
Byte
count=N
A
Data
Byte 1
A
Data
Byte 2
A
≈
Data
Byte N
A
PEC
!A
P

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Battery Broadcast Message for the Charger
Battery Broadcast Message for the Charger w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.6. SMBus battery Critical Message Protocol
A Smart Battery to SMBus Host or Smart Charger message is sent
using the SMBus Write Word protocol. Communication begins with
the SMBus Host’s or Smart Battery Charger’s address, followed by the
Smart Battery’s address which replaces the Command Code. The
SMBus Host or Smart Charger can now determine that the Smart
Battery was the originator of the message and that the following 16
bits are its status.
Battery Critical Message
Battery Critical Message w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.7. Host to battery Message (Slave Mode)
The Host acting in the role of bus master uses the read word, write
word, and read block protocols to communicate with the battery,
operating in slave mode.
1
7
1
1
8
1
8
1
8
1
1
S
Charger
Address
Wr
A
Command
Code
A
Data Byte
low
A
Data Byte
High
A
P
1
7
1
1
8
1
8
1
8
1
8
1
1
S
Charger
Address
Wr
A
Command
Code
A
Data
Byte
low
A
Data
Byte
high
A
PEC
A
P
1
7
1
1
8
1
8
1
8
1
1
S
Target
Address
Wr
A
Battery
Address
A
Data Byte
low
A
Data Byte
High
A
P
1
7
1
1
8
1
8
1
8
1
8
1
1
S
Target
Address
Wr
A
Battery
Address
A
Data
Byte
low
A
Data
Byte
High
A
PEC
A
P

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Host-to-Battery Messages
Function
Command
Code
Description
Unit
Access
Default
(POR)
Manufacturer
Access()
0x00
r/w
Remaining
Capacity Alarm()
0x01
Remaining Capacity Alarm Threshold
mAh
r/w
870
Remaining Time
Alarm()
0x02
Remaining Time Alarm Threshold.
minutes
r/w
10
Battery Mode()
0x03
Battery Operational Modes.
Bit flags
r/w
0x0081
At Rate()
0x04
This function is the first half of a two-
function call-set used to set the At Rate
value used in calculations made by the At
Rate Time To Full(), At Rate Time To
Empty(), and At Rate OK()
functions.
mA
r/w
0
At Rate Time To
Full()
0x05
Returns the predicted remaining time to
fully charge the battery at the At Rate()
value.
minutes
r
65535
At Rate Time To
Empty()
0x06
Returns the predicted remaining
operating time if the battery
is discharged at the At Rate() value.
minutes
r
65535
At Rate OK()
0x07
Returns a Boolean value that indicates
whether or not the battery can deliver the
At Rate value of additional energy for 10
seconds. If the At Rate() value is zero or
positive, the At Rate OK() function will
ALWAYS return TRUE.
Boolean
r
1
Temperature()
0x08
Returns the pack’s internal temperature.
0.1 oK
r
Function
Command
Code
Description
Unit
Access
Default
(POR)
Voltage ()
0x09
Returns the battery’s voltage (measured
at the cell stack)
mV
r
Current ()
0x0a
Returns the current being supplied (or
accepted) through the battery’s terminals.
mA
r
0
Average Current ()
0x0b
Returns a rolling average based upon the
last 64 samples of
current.
mA
r
0
Max Error ()
0x0c
Returns the expected margin of error.
percent
r
100
Relative State Of
Charge ()
0x0d
Returns the predicted remaining battery
capacity expressed as a percentage of
Full Charge Capacity().
percent
r
0
Absolute State Of
Charge ()
0x0e
Returns the predicted remaining battery
capacity expressed
as a percentage of Design Capacity().
percent
r
0
Remaining
Capacity ()
0x0f
Returns the predicted remaining battery
capacity.
mAh
r
0
Full Charge
Capacity ()
0x10
Returns the predicted battery capacity
when fully charged.
mAh
r
Run Time To
Empty()
0x11
Returns the predicted remaining battery
life at the present rate of discharge.
minutes
r
65535
Average Time To
Empty()
0x12
Returns the rolling average of the
predicted remaining battery
life.
minutes
r
65535
Average Time To
Full()
0x13
Returns the rolling average of the
predicted remaining time until the battery
reaches full charge.
minutes
r
65535
Charging Current()
0x14
Returns the battery’s desired charging
rate.
mA
r
4000

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Host-to-Battery Messages (cont.)
Function
Command
Code
Description
Unit
Access
Default
(POR)
Charging Voltage()
0x15
Returns the battery’s desired charging
voltage.
mV
r
12600
Battery Status()
0x16
Returns the battery’s status word.
Bit flags
r
0x2C0
Cycle Count()
0x17
Returns the number of charge/discharge
cycles the battery has experienced. A
charge/discharge cycle is defined as: an
amount of discharge approximately equal
to the value of Design Capacity.
cycles
r
0
Design Capacity()
0x18
Returns the theoretical capacity of the
new battery.
mAh
r
8700
Design Voltage()
0x19
Returns the theoretical voltage of a new
battery.
mV
r
10800
Specification Info()
0x1a
Returns the version number of the SBDS
the battery pack supports, as well as
voltage and current scaling information.
word
r
0x0031
Manufacturer
Date()
0x1b
Returns the date the electronics were
manufactured.
word
r
Serial Number()
0x1c
Returns the electronics serial number.
number
r
Manufacturer
Name()
0x20
Returns a character array containing the
manufacture’s name.
string
r
SES
Device Name()
0x21
Returns a character array that contains
the battery’s name.
string
r
SE-2015
Device Chemistry()
0x22
Returns a character array that contains
the battery’s chemistry.
string
r
LION
Manufacturer
Data()
0x23
Returns data specific to the manufacture.
r
3.3.8. Battery to charger Messages (Master Mode)
The battery, acting in the role of a bus master, uses the write word
protocol to communicate with the charger, operating in slave mode. If
the CHARGER_MODE bit in Battery Mode() is clear, the Battery will
broadcast Charger request information every 10 to 60 second.
Battery-to-Charger Messages
Function
Command
Code
Description
Unit
Access
Charging
Current()
0x14
Sends the desired charging rate to the battery
charger
mA
W
Charging
Voltage()
0x15
Sends the desired charging voltage to the
battery charger
mV
W
3.3.9. Critical Messages (Master Mode)
Whenever the Battery detects a critical condition, it takes the role of a
bus master and sends Alarm Warning() message to the Host and/ or
Charger. The Battery broadcasts the Alarm Warning() message at 10
second intervals until the critical condition(s) has been corrected.

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Battery Critical Messages
Function
Command
Code
Description
Unit
Access
Alarm
Warning()
0x16
This message is to the host and/or charger to
notify them that one or more alarm conditions
exist.
word
W
Alarm Bit Definitions
Bit
Battery Status
Set When:
Action When
Set:
Cleared When:
15
OVER_CHARG
D_ALARM
Remaining Capacity() exceeds
Full Charge Capacity() +
300mAh.
Stop
charging.
A continuous discharge
of >= 300mAh.
14
TERMINATE_C
HARGE_ALARM
Primary Charge Termination,
Cell Over-Voltage (COV),
Over-Current Charge (OCC),
Over-Temp Charge (OTC)
conditions.
COV = 4300mV
OCC = 3500mA
OTC = 58ºC
Stop
charging.
Relative State of
Charge() <= 95%,
COV, OCC or OTC
recovery threshold.
COV recovery <=
4150mV
OCC recovery <=
200mA for 70 sec
OTC recovery <= 56OC
13
Reserved
12
OVER_TEMP_
ALARM
Over-Temp Charge (OTC) or
Over- Temp discharge (OTD)
condition. OTC=58ºC
OTD=75ºC
Appropriate
FET will be
disabled.
OTC or OTD recovery
threshold. OTC
recovery =56ºC
OTD recovery =65OC
Bit
Battery Status
Set When:
Action When
Set:
Cleared When:
11
TERMINATE_DI
SCHARGE_ALA
RM
Relative State of Charge() <=
0%, Cell Under-Voltage (CUV)
Over-Current Discharge
(OCD), Over-Temp Discharge
(OTD) conditions
CUV = 2400mV
OCD = -6250mA
OTD = 750C
Stop
discharging.
Relative State Of
Charge() >= 1%, CUV,
OCD or OTD recovery
threshold. CUV
recovery >= 3000mV
OCD recovery >= -
200mA for 70sec OTD
recovery <= 65ºC
10
Reserved
9
REMAINING_
CAPACITY_
ALARM
(User settable)
Remaining Capacity() <
Remaining Capacity Alarm().
User
defined.
Remaining Capacity
Alarm() = 0 or
Is<= Remaining
Capacity().
8
REMAINING_TI
ME_ALARM
(User settable)
Average Time To Empty() <
Remaining Time Alarm().
User
defined.
Remaining Time
Alarm() = 0 or
<=Average Time To
Empty().
Status Bit Definitions
Z
Battery Status
Set When:
Action When
Set:
Cleared When:
7
INITIALIZED
None.
6
DISCHARGING
Battery is not in charge
mode.
None.
Battery is in charging
mode.
5
FULLY
CHARGED
When the battery detects a
primary charge termination.
Stop
charging.
Relative State Of
Charge() <= 95%.
4
FULLY
DISCHARGED
Relative State of Charge()
<= 0%.
Stop
discharging.
Relative State Of
Charge() >= 20%.

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3.3.10. Pack Calibration cycle
The fuel-gauge uses the Impedance Track Technology to measure
and calculate the available charge in battery cells. The achievable
accuracy is better than 1% error over the lifetime of the battery. Max
Error increases by 1% in 20 cycles, e.g., only occasionally is a full
charge/discharge learning cycle required to maintain high accuracy.
3.4. Protection Electronics
3.4.1. Overview of Operations
Electronic circuitry is permanently connected within the battery pack
to prevent damage if either the charger or host device fails to
function correctly. The circuitry also protects the battery if an illegal
current source is placed across the battery terminals, or an illegal load
is connected. Redundant levels of protection have been implemented
(the primary protection levels are auto-resettable and the secondary
are non-resettable).
3.4.2. Charge Protection
Over-Voltage:
The primary protection circuit will prevent the battery from
charging if any cell voltage >= 4300mV. Then, once all cell
voltages are <= 4150mV, it will allow charging again.
The secondary protection circuit will prevent the battery from
charging if any cell voltage >= 4.35V +/-0.05V by blowing a
power path logic fuse. The fuse is non-re-settable rendering
the battery pack non-functional.
Over-temp:
The primary protection circuit also provides over-temperature
protection and will prevent the battery from charging at
temperatures =>54ºC (see paragraph 3.1.5 for Charge
Current() request). Then, once the battery temperature has
cooled to <=45ºC, it will again allow charging.
Over-Current:
The primary protection circuit also provides continuous over-
current protection and will prevent the battery from charging
at Current() =>2.9A*. Then, once the Average Current() <=
200mA for 70sec, the battery will re-test the over-current
condition, and again allow charging.
*Note: Current values vary time to time. Check SDS with SES®

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3.4.3. Discharge Protection
Under-Voltage:
The primary protection circuit will prevent the battery from
being further discharged once any cell voltage reaches
<=2900mV. Then, once all cell voltages are >= 3150mV, it will
allow discharge again.
Over-temp:
The primary protection circuit also provides over-temperature
protection and will prevent the battery from discharging at
temperatures =>75ºC. Then, once the battery temperature has
cooled to <=65ºC, it will again allow discharging.
If the battery reaches 85ºC for any reason the secondary
protection circuit will blow the in-line power path logic fuse.
The fuse is non-re-settable rendering the battery pack non-
functional.
Over-Current:
The primary protection circuit also provides continuous over-
current protection and will prevent the battery from
discharging at Current()<= 6.0A. Then, Once the Average
Current() >= -200mA for 70sec, the battery will re-test the
over-current condition, and again allow discharging.
3.4.4. Short Circuit Protection
The primary protection circuit will prohibit the discharge of
the battery if a short-circuit is placed across the battery+ / -
terminals. Then, once the Average Current() >= -1mA for
70sec, the battery will re-test the short-circuit condition, and
again allow discharging.
The pack is design to withstand reasonable in-rush currents
without resetting the electronics and without interrupting the
discharge cycle. The following graph illustrates the short-
circuit/in-rush set points as implemented:
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