XCell N18650CP-35E User manual

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Specification for Lithium-Ion Rechargeable Cell
XCell N18650CP-35E
1 Preface
This specification describes the type, dimension, performance, technical characteristics, warnings and cautions of the lithium ion recharge-
able cell. The specification only applies to N 18650CP cell supplied by energy inside.
2 Definition
2.1 Standard charge method
At 25 ± 2°C, the cell is charged to 4.2 V at constant current of 0.5 C (1625 mA), then charged at constant voltage of 4.2 V until the current
tapers to ≤ 0.01C (32 mA) followed by resting for 5 min.
2.2 Standard discharge method
Under 25 ± 2°C, the cell is discharged to 2.5 V at a constant current of 0.2 C (650 mA).
2.3 Nominal capacity
Nominal capacity, signed as capacity and using mAh as unit, is obtained by discharging a cell via standard discharge method after it is stan-
dard charged.
3 Cell model and dimensions
3.1 Description and model
Description: Cylindrical Li-Ion rechargeable cell
3.2 Cell dimensions
Cell physical dimensions listed in Figure 1 (unit: mm), withtube
4 Cell characteristics
Unless otherwise specified, the cell is fresh cell and tested by standard charge and standard discharge.
Nominal capacity 3350mAh by standard charge and discharge
Minimum capacity 3250mAh by standard charge and discharge
Nominal voltage 3.6 V
Charge cut-off voltage 4.20 V
Discharge cut-off voltage 2.50 V
Max charge current 1C (25°C, not for cycle life)
Max discharge current 3C (25°C, not for cycle life)
Storage temperature 1 year: -20~25°C
3 months: -20~45°C
1 month: -20~60°C
Humidity range 0 ~ 60% RH (non-condensing)
Internal resistance ≤ 35 mΩ (AC Impedance, 1000 Hz)
Weight ≤ 49g
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5 Technical requirements
5.1 Cell operating conditions
Charge temperature 0 ~ 45°C, Discharge temperature -20 ~ 60°C
5.2 Cell testing conditions
Unless otherwise specified, all tests stated should be done at 25 ± 2°C.
5.3 Requirement of the testing equipment
The voltage measurement device: not less than 0.5 grade
The current measurement device: not less than 0.5 grade
AC Impedance: 1000 Hz
Temperature meter: precision ≤ 0.5°C
The size measurement device: ± 0.1%
The quality measurement device: ± 0.1%
5.4 Electrochemical characteristics
Unless otherwise specified, the cell should be fresh cell and tested by standard charge and discharge.
5.4.1
Rate discharge capability
(1) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C;
(2) Discharge: 0.2C, 0.5C, 1C, 2C, 3C constant current discharge to cut-off voltage ≤ 2.5 V.
Current / Relative Capacity: 0.2C / 100%, 0.5C / ≥96%, 1C / ≥93%, 2C / ≥90%, 3C / ≥88%
5.4.2
RT cycle life
(1) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C (32 mA);
(2) Discharge: 1C constant current discharge to cut-off voltage ≤ 2.75V.
Discharge capacity of 801th cycle
Original discharge capacity ≥80%
(1) Charge: 0.5C constant current charge to 4.15V followed by 4.15V constant voltage charge to cut-off current ≤ 0.05C (162 mA)
(2) Discharge: 1C constant current discharge to cut-off voltage ≤ 3.00V.
Discharge capacity of 1001th cycle
Original discharge capacity ≥80%
5.4.3
High-low temperature discharge performance
(1) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C at 25±2°C;
(2) Discharge: 0.2C constant current discharge to cut-off voltage ≤ 2.5V at 25°C, 60°C, 45°C, 10°C, 0°C, -10°C, -20°C.
Temperature / Relative Capacity: 25°C / 100%, 60°C / ≥95%, 45°C / ≥95%, 10°C / ≥88%, 0°C / ≥85%, -10°C / ≥75%, -20°C / ≥70%
5.4.4
Storage performance at 25°C (100% SOC)
(1) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C; Discharge: 0.2C
constant current discharge to cut-off voltage ≤ 2.5V, to obtain the initial capacity;
(2) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C;
(3) Stored at 25 ± 2°C for 28 days;
(4) Discharge: 0.2C constant current discharge to cut-off voltage ≤ 2.5V, to obtain the residual capacity;
(5) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C; Discharge: 0.2C
constant current discharge to cut-off voltage ≤ 2.5V, to obtain the recovery capacity.
Capacity / Relative Capacity: Residual capacity / ≥90%, Recovery capacity / ≥95%, Initial capacity / ≥100%
5.4.5
Storage performance at 60°C (100% SOC)
(1) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C at 25±2°C; Discharge:
0.2C constant current discharge to cut-off voltage ≤ 2.5V at 25±2°C, to obtain the initial capacity;
(2) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C at 25±2°C;
(3) Stored at 60 ± 2°C for 28 days;
(4) Kept at 25 ± 2°C for 5 hours;
(5) Discharge: 0.2C constant current discharge to cut-off voltage ≤ 2.5V at 25±2°C, to obtain the residual capacity;
(6) Charge: 0.5C constant current charge to 4.2V followed by 4.2V constant voltage charge to cut-off current ≤ 0.01C at 25±2°C; Discharge:
0.2C constant current discharge to cut-off voltage ≤ 2.5 V at 25±2°C, to obtain the recovery capacity.
Capacity / Relative Capacity: Residual capacity / ≥85%, Recovery capacity / ≥90%, Initial capacity / ≥100%
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5.5 Environmental and safety characteristics
5.5.1 Vibration
No fire, No explosion, No leakage, The maximum mass loss ≤0.1%
After standard fully charge, cell shall be attached to a vibration table directly and subjected to vibration that consists of 10 Hz to 55 Hz
to 10 Hz at the speed of 1Hz/min in 90~100mins.The total excursion of the vibration is 0.8mm (0.060 inches). The cell shall be vibrated
in each direction along axis of the cylinder and the vertical directions of axis of the cylinder.
UL1642
5.5.2 Drop test
No fire, No explode
The cell is charged following the standard charge method; The cells is dropped three times from a height of 1.0 m onto a concrete floor,
to obtain impacts in random orientations, at 25°C±2°C;Observation of 1 h.
IEC62133
5.5.3 Overcharge test
No fire, No explode
The cell is discharged following the standard discharge method. Apply a 8.4V power supply and a 2C charge current for 24hrs.
UN38.3
5.5.4 Forced Discharge test
No fire, No explode
Cell shall first be discharged according to standard discharge method, then the cell is subjected to a reverse charge at 1C for 90 min at
25±2°C
IEC62133
5.5.5 130°C hot oven test
No fire, No explode
The cell is charged following the standard charge method. After charging the cell is put in the oven. And then the oven temperature will
be ramped at 5°C per minute to 130°C and held at 130°C. When the temperature of the cell reach 130°C, the cell is maintained in the 130°C
oven for a maximum of 30 minute or until a fire or explosion is obtained, whichever comes first.
GB31241
5.5.6 Crush test
No fire, No explode
After charging a cell following the standard charge method, the cell shall be crushed between two flat surfaces. The direction of the crus-
hing force shall be vertical to axis of the cylinder. The crushing force is to be applied by a hydraulic ram with a 32mm diameter piston.
Crushing force is approximately 13 KN. Once the maximum pressure has been obtained it is to be released.
UL1642
5.5.7 Short circuit test at room temperature
No fire, No explode
Cell shall first be charged according to standard charge method, and then cell is to be short-circuited by connecting the positive and
negative terminals of the cell with copper wire having a maximum resistance load of 80 ± 20mΩ. This test is done at room temperature.
Monitor the cell temperature while testing. The cell is continuously discharged until the cell case temperature has returned to be 10°C
less then peak temperature.
UL1642
5.5.8 Short circuit test at 55°C
No fire, No explode
Cell shall first be charged according to standard charge method, and then cell is to be short-circuited by connecting the positive and
negative terminals of the cell with copper wire having a maximum resistance load of 80±20mΩ. This test is done at 55±5°C. Monitor the
cell temperature while testing. The cell is continuously discharged until the cell case temperature has returned to be 10°C℃ less then
peak temperature.
UL1642
5.5.9 Low Pressure text
No fire, No explosion, No leakage, The maximum mass loss ≤0.1%
Cell shall first be charged according to standard charge method, and then cell is to be stored at an absolute pressure of 11.6 kPa for six
hours at ambient temperature.
UL1642
Note: All above safety tests will be conducted at 25°C±2°C except where specified differently. Use proper ventilation with
protective equipment.
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6 Package picture
Small box / Big box / Pallet (100pcs cells in a small box, 2 small boxes in a big box)
7 Shipment
The cell shall be shipped in voltage range of 3.5 ~ 3.8 V or in accordance with customers‘ requirement. The remaining capacity before char-
ging shall be changed depending on the storage time and conditions.
8 Warranty
The Warranty period of cell is made according to business contract. However, even though the problem occurs within this period, energy
inside won’t replace a new cell for free as long as the problem is not due to the failure of energy inside manufacturing process or is due to
customers’ abuse or misuse.
energy inside will not be responsible for the trouble caused by handling in violation of cautions in instructions.
energy inside will not be responsible for the trouble caused by matching electric circuit, cell pack and charger.
energy inside will not be responsible for any defect of cells caused during assembling after acceptance.
9 Storage and shipment requirement
Storage environment Permissible time
-20°C~ 60°C, 60% RH Max Less than 1 month
-20°C~ 45°C, 60% RH Max Less than 3 months
-20°C~ 25°C, 60% RH Max Less than 1 year
About long time storage: If the cell needs to be stored for a long time, the cell’s storage voltage should be 3.5 ~ 3.8 V. Also, it is recommen-
ded to charge the cell every six months.
10 Warning and cautions in handling the lithium-ion cell
Lithium-ion rechargeable cells subjected to abuse can cause damage to the cell and/or personal injury. Please read and observe the standard
cell precautions below before utilization.
Note 1. The customer is required to contact energy inside in advance, if and when the customer needs other applications or operating con-
ditions not described in this document.
Note 2. energy inside will take no responsibility for any accident when the cell is used under other conditions not described in this document.
Warnings: To prevent the possibility of the cell from leaking, heating, explosion, please observe the following precautions: (It should be indi-
cated especially in manual or instruction for users.)
1 Do not use and leave the cell near a heat source such as fire or heater.
2 Do not use or leave the cell under the blazing sun (or in heated car by sunshine).
3 Do not use or leave the cell at very high temperature conditions (e.g., strong direct sunlight or a vehicle in extremely hot conditions).
Otherwise, it can overheat or catch fire or its performance will be degenerate and its service life will be decreased.
4 Do not short circuit, over-charge or over-discharge the cell.
5 Don’t immerse the cell in water and seawater. Please put it in cool and dry environment if no using.
6 Don’t reverse the positive and negative terminals
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7 Do not disassemble or modify the cell.
8 Do not transport or store the cell together with metal objects such as necklaces, hairpins, coins, etc.
9 Make sure the cell is not with conspicuous damage or deformation.
10 Don’t connect the cell to an electrical outlet directly.
11 If the cell leaks and the electrolyte splashes into the eyes, rinse the eyes with clean running water immediately for at least 15 minutes,
and go to hospital for treatment if necessary.
12 Mixed use of cells of different types is not allowed.
13 Keep the cell away from babies.
14 Do not directly solder the cell and pierce the cell with a nail or other sharp object.
15 Do not strike, throw or trample the cell.
16 Use the cell charger specifically for that purpose when charging.
17 Please separate cells of different electrochemical systems from one another when disposing of secondary cells.
18 Clean the terminals with a dry cloth before use if the cell terminals are dirty. Otherwise power failure or charge failure may occur due
to the poor connection with the instrument.
19 Cells should be removed from the device or charger immediately and not used again if they are over heat, give off odor, discolor or de-
form, or appear abnormally in any way during use, charging and storage.
20 The cell replacement shall be done only by either cell supplier or device supplier instead of the user.
21 Please tape the terminals to insulate cells before discarding them in case of fire and explosion.
22 Do not use cells in strong electrostatic and magnetic occasions, otherwise, it can cause safety problems easily.
23 Use of damaged cells is not permitted.
24 Make sure package designing will not cause cell damages.
25 Cell packing should be conducted strictly according to level range, any misuse of different levels should not be permitted.
26 Disassembling cells from pack or module is not permitted unless under the guidance of professional technicians.
11 Restriction of hazardous substances
This model of lithium-ion cell is in accordance with our company’s request of „The hazardous substances and material management stan-
dard“ or customer’s requirements.
12 Contact information
Steinfurt
Any questions?
Contact us, we will be pleased to advise you.
All rights reserved. Preliminary data sheet. Although we have taken gre-
at care in preparing this document, energy inside GmbH does not accept
any responsibility for errors or omissions. All information included here
may be changed at any time without prior notification.
energy inside GmbH, Ludwig-Elsbett-Straße 8, 97616 Salz - Germany
Tel.[phone], Fax [phone]
[email protected], www.batterien-vertrieb.de
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