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-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
0
Specification of product
for Lithium-ion Rechargeable Cell
Model : ICR18650-26F
November, 2009
Samsung SDI Co.,Ltd.
Energy Business Division
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
1
History of Revisions
Date
(YY.MM.DD)
Rev. No Description
Approved by Proposed
by QA Development
09.10.07 Ver. 0.0 Initial Sangheon Lee
09.11.04 Ver. 1.0 PTC Specification revision Sangheon Lee Y.C Kim
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
2
1. Scope
This product specification has been prepared to specify the rechargeable lithium-ion cell
('cell') to be supplied to the customer by Samsung SDI Co., Ltd.
2. Description and Model
2.1 Description Cell (lithium-ion rechargeable cell)
2.2 Model ICR18650-26F
3. Nominal Specifications
Item Specification
3.1 Nominal Capacity 2600mAh (0.2C, 2.75V discharge)
3.2 Charging Voltage 4.2 ±0.05 V
3.3 Nominal Voltage 3.7V
3.4 Charging Method
CC-CV
(constant voltage with limited current)
3.5 Charging Current
Standard charge: 1300mA
Rapid charge : 2600mA
3.6 Charging Time
Standard charge : 3hours
Rapid charge : 2.5hours
3.7 Max. Charge Current 2600mA
3.8 Max. Discharge Current 5200mA
3.9 Discharge Cut-off Voltage 2.75V
3.10 Cell Weight 47.0g max
3.11 Cell Dimension
Diameter(max.) : Φ 18.40 mm
Height(max.) : 65.00 mm
3.12 Operating Temperature
Charge: 0 to 45℃
Discharge: -20 to 60℃
3.13 Storage Temperature
1 year: -20~25℃ (1*)
3 months: -20~45℃ (1*)
1 month: -20~60℃ (1*)
Note (1): If the cell is kept as ex-factory status (50% of charge),
the capacity recovery rate is more than 80%.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
3
4. Outline Dimensions
See the attachment (Fig. 1)
Fig.1. Outline Dimensions of ICR18650-26F
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
4
5. Appearance
There shall be no such defects as scratch, rust, discoloration, leakage which
may adversely affect commercial value of the cell.
6. Standard Test Conditions
6.1 Environmental Conditions
Unless otherwise specified, all tests stated in this specification are
conducted at temperature 25±5℃ and humidity 65±20%.
6.2 Measuring Equipment
(1) Ammeter and Voltmeter
The ammeter and voltmeter should have an accuracy of the grade 0.5 or higher.
(2) Slide caliper
The slide caliper should have 0.01 mm scale.
(3) Impedance meter
The impedance meter with AC 1kHz should be used.
7. Characteristics
7.1 Standard Charge
This "Standard Charge" means charging the cell with charge current
1300mA and constant voltage 4.2V at 25℃ for 3hours.
7.2 Standard Discharge Capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is
measured with discharge current of 520mA with 2.75V cut-off at 25℃ within 1hour
after the standard charge.
Standard Discharge Capacity ≥ 2550mAh
7.3 Initial internal impedance
Initial internal impedance measured at AC 1kHz after rated charge.
Initial internal impedance ≤ 100mΩ
7.4 Temperature Dependence of Discharge Capacity
Capacity comparison at each temperature, measured with discharge
constant current 520mA and 2.75V cut-off with follow temperature after the standard
charging at 25℃.
Charge Temperature Discharge temperature
25℃ -10℃ 0℃ 25℃ 45℃
Relative Capacity 50% 70% 100% 95%
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
5
Note: If charge temperature and discharge temperature is not the same,
the interval for temperature change is 3 hours.
Percentage as an index of the Standard discharge capacity(=2550mAh) is 100%.
7.5 Temperature Dependence of Charge Capacity
Capacity comparison at each temperature, measured with discharge
constant current 520mA and 2.75V cut-off at 25℃ after the standard charge is
as follow temperature.
Note: If charge temperature and discharge temperature is not the same,
the interval for temperature change is 3 hours.
Percentage as an index of the Standard discharge capacity(=2550mAh) is 100%.
7.6 Charge Rate Capabilities
Discharge capacity is measured with constant current 520mA and 2.75V cut-off
after the cell is charged with 4.2V as follows.
Note: Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.
7.7 Discharge Rate Capabilities
Discharge capacity is measured with the various currents in under table and 2.75V
cut-off after the standard charge.
Note: Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.
Charge temperature Discharge temperature
0℃ 25℃ 45℃
25℃
Relative Capacity 80% 100% 100%
Charge Condition
Current
0.2C
(520mA)
0.5C
(1300mA)
1.0C
(2600mA)
Cut-off 7h or 0.05C 3h or 0.05C 2.5h or 0.05C
Relative Capacity 100% 95% 90%
Discharge Condition
Current
0.2C
(520mA)
0.5C
(1300mA)
1.0C
(2600mA)
2.0C
(5200mA)
Relative
Capacity
100% 95% 90% 80%
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
6
7.8 Cycle Life
Each cycle is an interval between the charge (charge current 1300mA) with 0.05C
cut-off and the discharge (discharge current 1300mA) with 2.75V cut-off. Capacity
after 299cycles and plus 1 day, measured under the same condition in 7.2
Capacity ≥ 1785mAh
7.9 Storage Characteristics
Capacity after storage for 30days at 25℃ from the standard charge,
measured with discharge current 1300mA with 2.75V cut-off at 25℃.
Capacity retention(after the storage) ≥ 2040mAh
7.10 Status of the cell as of ex-factory
The cell should be shipped in 50% charged state. In this case, OCV is from 3.65V to
3.85V.
8. Mechanical Characteristics
8.1 Drop Test
Test method: Cell(as of shipment or full charged) drop onto the oak-board
(thickness: ≥ 30mm) from 4 feet height at a random direction 6 times.
Criteria: No leakage
8.2 Vibration Test
Test method: Cell(as of shipment) is vibrated along 2 mutually
perpendicular axes with total excursion of 1.6mm and with
frequency cycling between 10Hz and 55Hz by 1Hz/min.
Criteria: No leakage
9. Safety
9.1 Overcharge Test
Test method: To charge the standard charged cell with 12V and 2600mA at 25℃
for 2.5 hours.
Criteria: No fire, and no explosion.
9.2 External Short-circuit Test
Test method: To short-circuit the standard charged cell by connecting positive and
negative terminal by less than 50mΩ wire for 3hours.
Criteria: No fire, and no explosion.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
7
9.3 Reverse Charge Test
Test method: To charge reversely the standard charged cell with charge current
2600mA for 2.5 hours.
Criteria: No fire, and no explosion.
9.4 Heating Test
Test method: To heat up the standard charged cell at heating rate 5℃ per minute up to
130℃ and keep the cell in oven for 60 minutes.
Criteria: No fire, and no explosion.
10. Warranty
Samsung SDI will be responsible for replacing the cell against defects or poor workmanship
for 15months from the date of shipping. Any other problem caused by malfunction of the
equipment or mix-use of the cell is not under this warranty.
The warranty set forth in proper using and handling conditions described above and
excludes in the case of a defect which is not related to manufacturing of the cell.
11. Others
11.1 Storage for a long time
If the cell is kept for a long time(3months or more), It is strongly recommended
that the cell is preserved at dry and low-temperature.
11.2 Other
Any matters that specifications does not have, should be conferred with
between the both parties.
11.3 PTC Specification
PTC Specification (in the Cell)
Item Hold Current Resistance
Power
Dissipation
Resistance
After Trip
Spec. 2.9A 7~16mΩ Max. 2.5W Max. 28mΩ
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
8
12. Packing
Fig.2. Package Drawing
100 PCS in small box
Master carton (200PCS)
Tape
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
9
Proper Use and Handling of Lithium Ion Cells
See before using lithium-ion cell
Supplied by
Samsung SDI Co., Ltd.
1. General
This document has been prepared to describe the appropriate cautions and
prohibitions, which the customer should take or employ when the customer uses
and handles the lithium ion cell to be manufactured and supplied by Samsung SDI Co.,
Ltd., in order to obtain optimum performance and safety.
2. Charging
2.1 Charging current
Charging current should be less than maximum charge current specified in
the product specification.
2.2 Charging voltage
Charging should be done by voltage less than that specified in
the product specification.
2.3 Charging time
Continuous charging under appropriate voltage does not cause any loss of
characteristics. However, the charge timer is recommended to be installed
from a safety consideration, which shuts off further charging at time specified
in the product specification.
2.4 Charging temperature
The cell should be charged within a range of specified temperatures in
the product specification.
2.5 Reverse charging
The cell should be connected, confirming that its poles are correctly aligned.
Inverse charging should be strictly prohibited. If the cell is connected
improperly, it may be damaged.
3. Discharging
3.1 Discharging
3.1.1 The cell should be discharged at less than maximum discharge current
specified in the product specification.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
10
3.2 Discharging temperature
3.2.1 The cell should be discharged within a range of temperatures specified in
the product specification.
3.2.2 Otherwise, it may cause loss of characteristics.
3.3 Over-discharging
3.3.1 The system should equip with a device to prevent further discharging
exceeding discharging cut-off voltage specified in the product
specification.(over-discharging)
3.3.2 Over-discharging may cause loss of performance, characteristics, of
battery function.
3.3.3 Over-discharging may occur by self-discharge if the battery is left for
a very long time without any use.
3.3.4 The charger should equip with a device to detect cell voltage and to
determine recharging procedures.
4. Storage
4.1 Storage conditions
4.1.1 The cell should be stored within a range of temperatures specified
in the product specification.
4.1.2 Otherwise, it may cause loss of characteristics, leakage and/or rust.
4.2 Long-term storage
4.2.1 The cell should be used within a short period after charging because
long-term storage may cause loss of capacity by self-discharging.
4.2.2. If long-term storage is necessary, the cell should be stored at lower
voltage within a range specified in the product specification, because
storage at higher voltage may cause loss of characteristics.
5. Cycle life
5.1 Cycle life performance
5.1.1 The cell can be charged/discharged repeatedly up to times specified in
the produce specification with a certain level of capacity also specified
in the product specification.
5.1.2 Cycle life may be determined by conditions of charging, discharging,
operating temperature and/or storage.
6. Design of System
6.1 Connection between the cell and the battery
6.1.1 The cell should not be soldered directly with leads. Namely, the cell
should be welded with leads on its terminal and then be soldered with
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
11
wire or leads to soldered lead.
6.1.2 Otherwise, it may cause damage of component, such as separator and
insulator, by heat generation.
6.2 Positioning the battery in the System
6.2.1 The battery should be positioned as possible as far from heat sources
and high temperature components.
6.2.2 Otherwise, it may cause loss of characteristics.
6.3 Mechanical shock protection of the battery
6.3.1 The battery should equip with appropriate shock absorbers in order to
minimize shock.
6.3.2 Otherwise, it may cause shape distortion, leakage, heat generation
and/or rupture.
6.4 Short-circuit protection of the cell
6.4.1 The cell equips with an insulating sleeve to protect short-circuit which
may occur during transportation, battery assembly and /or system
operation.
6.4.2 If the cell sleeve is damaged by some cause such as outside impact,
it may cause short-circuit with some wiring inside the battery.
6.5 Connection between the battery and charger/system
6.5.1 The battery should be designed to be connected only to the specified
charger and system.
6.5.2 A reverse connection of the battery, even in the specified system,
should be avoided by employing special battery design such as
a special terminals.
7. Battery Pack Assembly
7.1 Prohibition of usage of damaged cell
7.1.1 The cell should be inspected visually before battery assembly.
7.1.2 The cell should not be used if sleeve-damage, can-distortion and/or
electrolyte-smell is detected.
7.2 Terminals handling
7.2.1 Excessive force on the negative terminal should be avoided when
external lead is welled.
7.3 Transportation
7.3.1 If the cell is necessary to transported to order place, such as the
battery manufacturer, careful precautions should be taken to avoid
damage of cell.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
12
8. Others
8.1 Disassembly
8.1.1 The cell should not be dismantled from the battery pack.
8.1.2 Internal short-circuit caused by disassembly may lead to heat generation
and/or venting.
8.1.3 When the electrolyte is coming in contact with the skin or eyes,
flush immediately with fresh water and seek medical advice.
8.2 Short-circuiting
8.2.1 Short-circuit results in very high current which leads to heat generation.
8.2.3 An appropriate circuitry should be employed to protect accidental
short-circuiting.
8.3 Incineration
8.3.1 Incinerating and disposing of the cell in fire are strictly prohibited,
because it may cause rupture.
8.4 Immersion
8.4.1 Soaking the cell in water is strictly prohibited, because it may cause
melt of components to damaged to functions.
8.5 Mixing use
8.5.1 Different types of cell, or same types but different manufacturer's cell
may lead to cell rupture or damage to system due to the different
characteristics of cell.
8.6 Battery exchange
8.6.1 Although the cell contains no environmentally hazardous component,
such as lead or cadmium. the battery should be disposed according to
the local regulations when it is disposed.
8.6.2 The cell should be disposed with a discharged state to avoid heat generation
by an inadvertent short-circuit.
8.7 Caution - The Battery used in this device may present a risk of fire or chemical burn if
mistreated. Do not disassemble, heat above 100℃ or incinerate. Replace
battery with Samsung SDI battery only. Use of another battery may present a
risk of fire or explosion. Dispose of used battery promptly. Keep away from
children. Do not disassemble and do not dispose of in fire.
8.8 Attached
System & Pack Quality Guideline
8-8-1 The battery pack’s consumption current.
- Sleep Mode: Under 250uA.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
13
- Shut Down Mode: Under 10uA (under 2.5V).
8-8-2 SOC 0%
- Any bank voltage in SOC 0% of Pack should be higher than 3.0V.
(Discharging Cut-off Voltage)
8-8-3 Operating Charging Voltage of a cell.
- Normal operating voltage of cell is 4.20V.
- Max operating voltage of cell is 4.25V.
8-8-4 No continuous charge
- Charge cut-off condition : Cut-off Current is higher than 1/20C
(Charging method: CC-CV)
- Initial recharging condition : Remaining Capacity is lower than 90% or Voltage
is lower than 4.10V
8-8-5 Pre-charging function
- Pre-charge function should be implemented to prevent abnormal high rate
charging after deep discharge.
- Pre-charging condition :
Operation: less than 3.0V
Charging current : Under 150mA/Cell.(Continuous)
Pre-charge stop (Normal Charge Start) : All cells reach 3.0V
8-8-6 Cell voltage monitoring system.
- The system (Charger or Pack) should equip a device to monitor each cell
voltage and to stop charging if a cell imbalance happened.
8-8-7 The battery pack should have warning system for over temperature, over voltage,
over current, and unexpected events would be harm to system. If battery faces
harsh condition such as over temperature, Battery pack should control FET-off
directly.
8-8-8 Mechanical guides.
- PCBA and Cell stack should have heat insulation material between them. (Such
as plastic barrier which is giving air isolation or non-thermal conductive
material.)
- B+ and B- wire connection should not be crossed each other. Do not make wire
which had the voltage difference more than 4.0V get together.
- The material such as double sided tape and rubber which are used in battery pack should
be verified for its flammability
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
14
Handling Precaution and Prohibitions of Lithium Ion & Lithium Ion Polymer
Rechargeable Cells and Batteries
Inaccurate handling of lithium ion and lithium ion polymer rechargeable battery may cause leakage, heat,
smoke, an explosion, or fire.
This could cause deterioration of performance or failure. Please be sure to follow instructions carefully.
1.1 Storage
Store the battery at low temperature (below 20℃ is recommended), low humidity, no dust and no
corrosive gas atmosphere.
1.2 Safety precaution and prohibitions
To assure product safety, describe the following precautions in the instruction manual of the
application.
[ Danger!]
■ Electrical misusage
Use dedicated charger.
Use or charge the battery only in the dedicated application.
Don't charge the battery by an electric outlet directly or a cigarette lighter charger.
Don't charge the battery reversely.
■ Environmental misusage
Don't leave the battery near the fire or a heated source.
Don't throw the battery into the fire.
Don't leave, charge or use the battery in a car or similar place where inside of temperature may be
over 60℃.
Don't immerse, throw, wet the battery in water / seawater.
■ others
Don't fold the battery cased with laminated film such as pouch and Polymer.
Don't store the battery in a pocket or a bag together with metallic objects such as keys, necklaces,
hairpins, coins, or screws.
Don't short circuit (+) and (-) terminals with metallic object intentionally.
Don't pierce the battery with a sharp object such as a needle, screw drivers.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
15
Don't heat partial area of the battery with heated objects such as soldering iron.
Don't hit with heavy objects such as a hammer, weight.
Don't step on the battery and throw or drop the battery on the hard floor to avoid mechanical shock.
Don't disassemble the battery or modify the battery design including electric circuit.
Don't solder on the battery directly.
Don't use seriously scared or deformed battery.
Don't put the battery into a microwave oven, dryer ,or high-pressure container.
Don't use or assemble the battery with other makers' batteries, different types and/or models of
batteries such as dry batteries, nickel-metal hydride batteries, or nickel-cadmium batteries.
Don't use or assemble old and new batteries together.
[ Warning! ]
Stop charging the battery if charging isn't completed within the specified time.
Stop using the battery if the battery becomes abnormally hot, order, discoloration, deformation, or
abnormal conditions is detected during use, charge, or storage.
Keep away from fire immediately when leakage or foul odors are detected. If liquid leaks onto your
skin or cloths, wash well with fresh water immediately.
If liquid leaking from the battery gets into your eyes, don't rub your eyes and wash them with clean
water and go to see a doctor immediately.
If the terminals of the battery become dirty, wipe with a dry cloth before using the battery.
The battery can be used within the following temperature ranges. Don't exceed these ranges.
Charge temperature ranges : 0℃ ~ 45℃
Discharge Temperature ranges : -20℃ ~ 60℃
Store the battery at temperature below 60℃
Cover terminals with proper insulating tape before disposal.
[ Caution! ]
■ Electrical misusage
Battery must be charge with constant current-constant voltage (CC/CV).
Charge current must be controlled by specified value in Cell specification.
Cut-off Voltage of charging must be 4.2V.
Charger must stop charging battery by detecting either charging time or current specified in Cell’s
specification.
Discharge current must be controlled by specified value in Cell’s specification.
Cut-off Voltage of discharging must be over 2.5V.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
16
■ others
Keep the battery away from babies and children to avoid any accidents such as swallow.
If younger children use the battery, their guardians should explain the proper handling method and
precaution before using.
Before using the battery, be sure to read the user's manual and precaution of it's handling.
Before using charger, be sure to read the user's manual of the charger.
Before installing and removing the battery from application, be sure to read user's manual of the
application.
Replace the battery when using time of battery becomes much shorter than usual.
Cover terminals with insulating tape before proper disposal.
If the battery is needed to be stored for an long period, battery should be removed from the
application and stored in a place where humidity and temperature are low.
While the battery is charged, used and stored, keep it away from object materials with static electric
chargers.
Safety Handling Procedure for the Transporter
■ Quarantine : Packages that are crushed, punctured or torn open to reveal contents should not be
transported. Such packages should be isolated until the shipper has been consulted,
provided instructions and, if appropriate, arranged to have the product inspected and
repacked.
■ Spilled Product : In the event that damage to packaging results in the release of cells or batteries,
the spilled products should be promptly collected and segregated and the shipper
should be contacted for instructions.
Design of positioning the battery pack in application and charger
To prevent the deterioration of the battery performance caused by heat, battery shall be positioned
away from the area where heat is generated in the application and the charger.
Design of the Battery Pack
Be sure adopting proper safe device such as PTC specified type or model in Cell Specification.
If you intend to adopt different safety device which is not specified in Cell Specification, please
contact Samsung SDI to investigate any potential safety problem.
Be sure designing 2nd protective devices such as PTC & PCM at the same time to protect Cell
just in case one protective device is fault.
Please contact following offices when you need any help including safety concerns.
-SAMSUNG SDI Confidential Proprietary –
Spec. No. ICR18650-26F Version No. 1.0
Samsung SDI., Energy Business Division.
17
Samsung SDI Emergency Contact Information
■ Samsung SDI Headquarter.
428-5, Gongse-dong, Giheung-gu, Yongin-si, Gyeonggi-do, 446-577, Korea
Tel:(+82)31-8006-3708 Fax:(+82)31-8006-3689
■ Samsung SDI Chonan factory.
508, Sungsung-Dong, Chonan City, Chungchongnam-Do, Korea
Tel:(+82)70-7125-1852
■ Samsung SDI America office.
18600 Broadwick Street Rancho Dominguez CA 90220
Tel:(+1)310-900-5205 Fax:(+1)310-537-1033
■ Samsung SDI Taiwan office.
Rm. 3010, 30F., 333, Keelung Rd. Sec. 1, Taipei, Taiwan
Tel:(+886)2-2728-8469 Fax:(+886)2-2728-8480

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