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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
SPECIFICATION OF PRODUCT
for Lithium-ion rechargeable cell
Model name : INR18650-32E
June.13, 2014
Samsung SDI Co., Ltd.
Cell Business Division
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
1
Revision history
Revision
No.
Date
(‘yr-m-d)
Page Item Description
Changes
/ Author
V1.0 ‘14-06-13 First Edition Sanghun Jeong
V2.0 ‘14-06-30 6 Cycle life
Discharge 6400mA 70%@500cycles
Discharge 6400mA 70%@300cycles
Sanghun Jeong
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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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 INR18650-32E
2.3 Site Manufactured in Korea
3. Nominal Specifications
Item Specification
3.1 Typical Capacity 3,200mAh (0.2C, 2.50V discharge)
3.2 Minimum Capacity 3,100mAh (0.2C, 2.50V discharge)
3.3 Charging Voltage 4.2V
3.4 Nominal Voltage 3.65V (0.2C discharge)
3.5 Charging Method CC-CV
(constant voltage with limited current)
3.6 Charging Current Standard charge: 960mA
3.7 Charging Time Standard charge: 5hours
3.8 Max. Charge Current 3,200mA (not for cycle life)
3.9 Max. Discharge Current 6,400mA (for continuous discharge)
9,600mA (not for continuous discharge)
3.10 Discharge Cut-off Voltage 2.50V
3.11 Cell Weight 50g max
3.12 Cell Dimension Height : 65.2mm max
Diameter(max.) : Φ 18.50 mm
3.13 Operating Temperature
(Cell Surface Temperature)
Charge : 0 to 45°C
Discharge : -20 to 60°C
3.14 Storage Temperature
1 year : -20~25°C (1*)
3 months : -20~45°C (1*)
1 month : -20~60°C (1*)
Note (1): If the cell is kept as ex-factory status (50% of charge),
The capacity recovery rate is more than 80%.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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4. Outline Dimensions
See the Fig. 1
Fig. 1 Outline Dimensions of INR18650-32E
Unit : mm
Max. 18.50
Max. 65.20
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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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°C and humidity 65±20%.
6.2 Measuring Equipment
(1) Amp-meter and Volt-meter
The amp-meter and volt-meter should have an accuracy of the grade 0.5mA and
mV 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 of
960mA and constant voltage 4.2V at 25°C, 0.02C cutoff.
7.2 Standard Discharge Capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is
measured with discharge current of 640mA with 2.50V cut-off at 25°C within 1 hour
after the Standard charge.
Standard Discharge Capacity ≥ 3,100mAh
7.3 Rated Discharge Capacity
The rated discharge capacity is the initial discharge capacity of the cell, which is
measured with discharge current of 3,200mA with 2.50V cut-off at 25°C within 1 hour
after the Standard charge.
Rated Discharge Capacity ≥ 3,007mAh (97% of 3,100mAh)
7.4 Initial internal impedance
Initial internal impedance measured at AC 1kHz after Standard charge.
Initial internal impedance ≤ 35mΩ
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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7.5 Temperature Dependence of Discharge Capacity
Discharge capacity comparison at each temperature, measured with discharge
constant current 3,200mA and 2.50V cut-off with follow temperature after the Standard
charging at 25°C.
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 (=3,100mAh) is 100%.
7.6 Temperature Dependence of Charge Capacity
Capacity comparison at each temperature, measured with discharge constant current
550mA and 2.50V cut-off at 25°C 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 (=3,100mAh) is 100%.
7.7 Charge Rate Capabilities
Discharge capacity is measured with constant current 3,200mA and 2.50V cut-off
after the cell is charged with 4.2V at 25°C as follows.
Note: Percentage as an index of the Rated discharge capacity (=3007mAh) is 100%.
Charge Temperature Discharge temperature
25°C -10°C 25°C 40°C
Relative Capacity 60% 97% 97%
Charge temperature Discharge temperature
0°C 25°C 45°C
25°C
Relative Capacity 80% 100% 100%
Charge Condition
Current 0.3C (960mA) 1.0C (3,200mA)
Cut-off 5h or 0.02C 1.6h or 0.02C
Relative Capacity 100% 97%
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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9. Safety
9.1 Overcharge Test
Test method: To charge the standard charged cell with 12V and 3,200mA at 25°C
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 80±20mΩ wire for 3 hours.
Criteria: No fire, and no explosion.
9.3 Reverse Charge Test
Test method: To charge reversely the standard charged cell with charge current
3,200mA for 2.5 hours.
Criteria: No fire, and no explosion.
9.4 Heating Test
Test method: To heat the standard charged cell at heating rate of 5°C per minute up to
130°C and keep the cell in oven for 10 minutes.
Criteria: No fire, and no explosion.
10. Warranty
Samsung SDI will be responsible for replacing the cell against defects or poor workmanship
for 15month from the date of shipping. Any other problems caused by malfunction of the
equipment or unsuitable use of the cell are not under this warranty.
The warranty set forth in proper use, 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.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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12. Packaging
See Fig.2, Package Drawing
Fig 2. Package Drawing
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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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 be equipped 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 is equipped 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 causes 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. Transportation
7.2.1. If the cell is necessary to transport to order place, such as the
battery manufacturer, careful precautions should be taken to avoid
damage of cell.
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,
wash immediately with fresh water and seek medical advice.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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▣ Pack Design Guideline (For electrical design)
Portable IT Power-Tool Medical E-Bike E-Scooter EV/LEV ESS/UPS
4.20V 4.20V 4.10V 4.10V 4.10V 4.10V 4.00V
(4.05V)
4.35V 4.35V 4.20V 4.20V 4.20V 4.20V 4.00V
(4.05V)
CC-CV CC-CV CC-CV CC-CV CC-CV CC-CV CC-CV
0.05C 0.05C 0.025C 0.025C 0.025C 0.025C 0.025C
(Continous)
4.10V 4.10V 4.05V 4.05V 4.05V 4.05V 4.00V
(4.05V)
4.25V 4.25V 4.10V 4.10V 4.10V 4.10V 4.00V
(4.05V)
□ Min. voltage of
terminate discharging
3.00V 2.50V 3.00V 3.00V 3.00V 3.00V 3.00V
□ Min. voltage of
over-discharging protection
2.50V 2.00V 2.50V 2.50V 2.50V 2.50V 2.50V
□ Min. voltage of
terminate discharging
2.50V 2.50V 2.50V 2.50V 2.50V 2.50V 2.50V
□ Min. voltage of
over-discharging protection
2.30V 2.00V 2.50V 2.50V 2.50V 2.50V 2.50V
2.00V 2.00V 2.00V 2.00V 2.00V 2.00V 2.00V
10μA/Cell 10μA/Cell 10μA/Cell 10μA/Cell 10μA/Cell 10μA/Cell 10μA/Cell
↓ 1.00V ↓ 1.00V ↓ 1.00V ↓ 1.00V ↓ 1.00V ↓ 1.00V ↓ 1.00V
1.0V ~ 3.0V 1.0V ~ 3.0V 1.0V ~ 3.0V 1.0V ~ 3.0V 1.0V ~ 3.0V 1.0V ~ 3.0V 1.0V ~ 3.0V
0.1C ~ 0.5C 0.1C ~ 0.5C 0.1C ~ 0.5C 0.1C ~ 0.5C 0.1C ~ 0.5C 0.1C ~ 0.5C 0.1C ~ 0.5C
□ BMS Shut Down Voltage**
□ Max. consumption current of BMS
after shut down
□ Do not charge***
□ Pre-charging voltage range****
□ Current range of Pre-charging
Item
□ Standard charging voltage (4.20V cell)
□ Standard charging voltage (4.35V cell)
□ Charging method
□ Full-charging cut-off current*
□ Voltage of Re-charging (4.20V cell)
□ Voltage of Re-charging (4.35V cell)
LCO
LMO
NCA
NCM
Remark:
* Current of cell which full-charging shall be terminated.
** Voltage condition of BMS which shall be shut down.
*** Under 1.0V voltage, do not charge the cell.
**** Voltage range of cell which shall be charged by Pre-charging.
If a customer’s battery pack cannot meet the requirements above,
SDI cannot take responsibility for a quality issue about a battery cell.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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▣ Pack Design Guideline (For mechanical design)
Portable IT Power-Tool Medical E-Bike E-Scooter EV/LEV ESS/UPS
◎ ◎ ◎ ◎ ◎ ◎ ◎
◎ ◎ ◎
◎ ◎ ◎
◎ ◎ ◎ ◎ ◎ ◎ ◎
◎ ◎
◎ ◎
Item
□ Need partitions(separator) between
BMS and a Cell
□ Need to check if the pack is designed
to be able to avoid thermal runaway
(1KWh↑)
□ Need to analyze the battery pack's
thermal distribution and its effect
on the pack's life cycle
□ Need to use a non-flammable
(VO level) case
□ Need to apply improved material
(Steel) to the case
□ Need to analyze the battery pack's
structure, system, installation status
and use environment
If a customer’s battery pack cannot meet the requirements above,
SDI cannot take responsibility for a quality issue about a battery cell.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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Handling precaution and prohibitions of lithium ion 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°C 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°C.
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.
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.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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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°C ~ 45°C
Discharge Temperature ranges : -20°C ~ 60°C
Store the battery at temperature below 60°C
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 4.20V
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.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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■ 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.
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SAMSUNG SDI Confidential Proprietary
Spec. No. INR18650-32E Version No. 2.0
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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 emergency contact information
■ Samsung SDI Headquarter.
150-20, Gongse-ro, Giheung-gu, Yongin-si, Gyunggi-do, Korea
Tel: +82-31-8006-3100, Fax : +82-31-210-7887
■ Samsung SDI Cheonan Factory.
467, Beonyeong-ro, Seobuk-gu, Cheonan-si, Chungcheongnam-Do, Korea
Tel: +82-41-560-3114, Fax : +82-41-550-3399
■ Samsung SDI America Subsidiary
3655 North First St. San Jose CA 95134
Tel: +1-408-544-4541, Fax : +1-949-260-2221
■ Samsung SDI Taiwan Branch
9F-1,399 Ruey Kuang Road, Neihu, Taipei, Taiwan
Tel: +886-2-2656-8300, Fax : +886-2-2656-8329
■ Samsung SDI Malaysia Factory.
Lot 635 & 660, Kawasan Perindustrian, Tuanku Jaafar, 71450
Sungai Gadut, Negeri Sembilan Darul Khusus, Malaysia
Tel: (+60)6-677-6160, 6153