AIPAS LN-ALX124-13S2P Rechargeable Li-ion Battery Pack Owner’s Manual
- September 6, 2024
- Aipas
Table of Contents
- LN-ALX124-13S2P Rechargeable Li-ion Battery Pack
- Specifications:
- Product Usage Instructions:
- Charging the Battery Pack:
- Discharging the Battery Pack:
- Q: What is the maximum discharge current of the battery
- Q: How many cells are there per battery in the pack?
- Q: Can I use a charger with higher current output to charge the
LN-ALX124-13S2P Rechargeable Li-ion Battery Pack
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Specifications:
-
Model/Type: LN-ALX124-13S2P
-
Rated Rating: 48V 10AH 480Wh
-
Standard Charging Current: 2000mA
-
Standard Discharge Current: 2000mA
-
Max. Charging Current: 3000mA
-
Max. Discharge Current: 20000mA
-
Limited Charging Voltage: 54.6V
-
Appearance: Silvery, Prismatic
-
Cut-off Voltage: 37.7V
-
Classification Cell: Small Lithium ion
Batteries -
Model number of the cell: INR21700-50E
-
Rated Rating of the cell: 3.7V 5000mAh
18.5Wh -
Cell’s Max. Discharge Current: 14700mA
-
Limited Charging Voltage of the cell:
4.2V -
Cell number per battery: 26PCS, 13S2P
-
Cut-off Voltage of the cell: 2.5V
Product Usage Instructions:
Charging the Battery Pack:
-
Use the provided charger with an output matching the
specifications of the battery pack. -
Connect the charger to a power source and then to the battery
pack. -
Ensure that the charging voltage does not exceed the limited
charging voltage of 54.6V.
Discharging the Battery Pack:
-
Connect the battery pack to the device you intend to
power. -
Avoid discharging the battery below the cut-off voltage of
37.7V to prevent damage.
Frequently Asked Questions (FAQ):
Q: What is the maximum discharge current of the battery
pack?
A: The maximum discharge current of the battery pack is
20000mA.
Q: How many cells are there per battery in the pack?
A: There are a total of 26 cells, arranged in a configuration of
13 series and 2 parallel (13S2P) per battery pack.
Q: Can I use a charger with higher current output to charge the
battery pack?
A: It is recommended to use a charger with an output current
within the specified limits to ensure safe and efficient charging
of the battery pack.
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UN38.3 Test Report
Report No.: P23042707701 Name of Products: Rechargeable Li-ion battery pack
Model and Spec.: LN-ALX124-13S2P 48V 10AH 480Wh
Applicant: GALAXY BICYCLE CO., LTD. Manufacturer: LN Energy Technology Co.,
Ltd Date of issue 2023-05-15
Shenzhen NTEK New Energy Technology Co., Ltd.
Applicant Address of Applicant
Manufacturer Address of manufacturer
Page 2 of 15 GALAXY BICYCLE CO., LTD.
Report No./. P23042707701
New material industry base, Gonghe districts, heshan city, Guangdong province, China.
LN Energy Technology Co., Ltd
301 and 302, Block 11, Phase ll, Tianfulai lnternational Industrial City, No. 37, Changbao West Road, Rongli Community, Ronggui Street, Shunde District, Foshan City, Guangdong Province
Name of Products Model/Type Ratings
Rechargeable Li-ion battery pack LN-ALX124-13S2P 48V 10AH 480Wh
Date of receipt of test item 2023-05-02
Completion Date
2023-05-13
Tested according to: United Nations Manual of Tests and Criteria, PART III, section 38.3 Lithium metal and lithium ion batteries, the seventh revised edition amendment 1(ST/SG/AC.10/11/Rev.7/Amend.1).
Tests performed: Test T.1: Altitude simulation
Test T.2: Thermal Test Test T.3: Vibration Test T.4: Shock
Test T.5: External short circuit Test T.6: Impact Test T.7: Overcharge Test T.8: Forced discharge
Test Conclusion : The Rechargeable Li-ion battery pack submitted by GALAXY
BICYCLE CO., LTD. is tested according
to the United Nations Manual of Tests and Criteria, PART III, section 38.3
Lithium metal and lithium ion batteries, the seventh revised edition amendment
1 (ST/SG/AC.10/11/Rev.7/Amend.1).
Test results: PASS
Tested by: Reviewed by:
Lix Xu Jony j Huang
Approved by:
Jesse Zhang
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
Seal of NTEK RE-093 A/0
Page 3 of 15
General product information: Battery
Model/Type
LN-ALX124-13S2P
Rated Rating
Report No./ P23042707701
48V 10AH 480Wh
Standard Charging Current 2000mA Standard Discharge Current 2000mA
Max. Charging Current Max. Discharge Current
3000mA
20000mA
Limited Charging Voltage 54.6V
Appearance
Silvery, Prismatic
Cut-off Voltage
37.7V
49×105×459 Dimension (T×W×H)(mm)
Classification Cell
Small Lithium ion Batteries
Model number of the cell
INR21700-50E
Rated Rating
3.7V 5000mAh 18.5Wh
Cell’s Max. Discharge Current
14700mA
Limited Charging Voltage
4.2V
Cell number per battery
26PCS, 13S2P
Cut-off Voltage
2.5V
Sample description
Type Batteries
Component cells
Sample No. NE230424235001-X*
Sample Sub-No. State of samples
001~004 019~022 005~008 023~026
009~013
Fully charged at first cycle
Fully charged after 25 cycles 50% of the design rated capacity at first cycles
014~018
50% of the design rated capacity after 25 cycles
027~036 037~046
Fully discharged at first cycle Fully discharged after 25 cycles
- “X” contained in Sample No. represents Sample Sub-No., it consists of three digit.
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Page 4 of 15
Report No./ P23042707701
Test environment condition: Room temperature: 15°C-25°C; Room humidity: 40-70%
Remark None Summaries of testing : All rechargeable battery types, including
those composed of previously tested cells, shall be subjected to tests T.1 to
T.5 and T.7.
Tests T.1 to T.5 are conducted in sequence on the same battery. Tests T.6 and
T.8 are conducted using not otherwise tested batteries. Test T.7 may be
conducted using undamaged batteries previously used in Tests T.1 to T.5 for
purposes of testing on cycled batteries.
In order to quantify the mass loss, the following procedure is provided:
Mass loss(%)=(M1-M2)/M1×100
Where M1 is the mass before the test and M2 is the mass after the test. When mass loss does not exceed the values in Table below, it is considered as “no mass loss”.
Mass M of cell or battery
Mass loss limit
M1g 1gM75g
M75g
0.5% 0.2% 0.1%
In tests T.1 to T.4, batteries meet this requirement if there is no leakage, no venting, no disassembly, no
rupture and no fire and if the open circuit voltage of each test battery after testing is not less than 90% of its
voltage immediately prior to this procedure.
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RE-093 A/0
Test Procedure
Page 5 of 15 Pre-conditioning
Report No./ P23042707701
Marking NE230424235001-X
Sample Sub-No. 001~008
Sample Sub-No. 009~018
Sample Sub-No. 019~026
Sample Sub-No. 027~046
Altitude simulation
Thermal test Vibration Shock
External short circuit
Impact
Overcharge
Forced discharge
Finish
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Page 6 of 15
Photos of sample
Report No./ P23042707701
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Page 7 of 15
Photos of sample
Report No./ P23042707701
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Page 8 of 15
Report No./ P23042707701
Test results :
Test T.1: Altitude simulation
Test method : Batteries are stored at a pressure of 11.6 kPa or less for at
least six hours at ambient temperature (20 ± 5°C).
Requirement : Batteries meet this requirement if there is no leakage, no
venting, no disassembly, no rupture and no fire and if the open circuit
voltage of each test battery after testing is not less than 90% of its voltage
immediately prior to this procedure.
Test Data showed in table below
Sample Sub-No.
001 002 003 004 005 006 007 008
Prior to test
Mass (g)
2565.9 2563.3 2566.2 2567.2 2564.7 2565.4 2564.5 2564.6
Voltage (V)
54.33 54.34 54.33 54.34 54.35 54.34 54.34 54.33
After test
Mass (g)
2565.9 2563.3 2566.2 2567.2 2564.7 2565.4 2564.5 2564.6
Voltage (V)
54.33 54.34 54.33 54.34 54.35 54.34 54.34 54.33
Mass loss (%)
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Voltage after test/ voltage prior to test
% 100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
Results
PASS PASS PASS PASS PASS PASS PASS PASS
Notes : After the test, there is no leakage, no venting, no disassembly, no rupture and no fire. Room temperature : 21.7°C
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Test T.2: Thermal test
Page 9 of 15
Report No./ P23042707701
Test method Batteries are to be stored for at least six hours at a test temperature equal to 72 ± 2°C, followed by storage for at least six hours at a test temperature equal to -40 ± 2°C. The maximum time interval between test temperature extremes is 30 minutes. This procedure is to be repeated 10 times, after which all test batteries are to be stored for 24 hours at ambient temperature (20 ± 5°C).
Requirement Batteries meet this requirement if there is no leakage, no venting, no disassembly, no rupture and no fire and if the open circuit voltage of each test battery after testing is not less than 90% of its voltage immediately prior to this procedure.
Test Data showed in table below
Sample
Prior to test
Sub-No.
001 002 003 004 005 006 007 008
Mass (g)
2565.9 2563.3 2566.2 2567.2 2564.7 2565.4 2564.5 2564.6
Voltage (V)
54.33 54.34 54.33 54.34 54.35 54.34 54.34 54.33
After test
Mass (g)
2565.1 2562.4 2565.5 2566.4 2564.1 2564.6 2563.6 2563.9
Voltage (V)
53.75 53.74 53.73 53.77 53.75 53.75 53.74 53.76
Mass loss (%)
0.031 0.035 0.027 0.031 0.023 0.031 0.035 0.027
Voltage after test/ voltage prior to test
(%) 98.93
98.90
98.90
98.95
98.90
98.91
98.90
98.95
Results
PASS PASS PASS PASS PASS PASS PASS PASS
Notes : After the test, there is no leakage, no venting, no disassembly, no rupture and no fire. Room temperature : 21.7°C
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Test T.3: Vibration
Page 10 of 15
Report No./ P23042707701
Test method Batteries are firmly secured to the platform of the vibration machine without distorting the cells in such a manner as to faithfully transmit the vibration. The vibration shall be a sinusoidal waveform with a logarithmic sweep between 7 Hz and 200 Hz and back to 7 Hz traversed in 15 minutes. This cycle shall be repeated 12 times for a total of 3 hours for each of three mutually perpendicular mounting positions of the cell. One of the directions of vibration must be perpendicular to the terminal face. The logarithmic frequency sweep is as follows: from 7 Hz a peak acceleration of 1 gn is maintained until 18 Hz is reached. The amplitude is then maintained at 0.8 mm (1.6 mm total excursion) and the frequency increased until a peak acceleration of 8 gn occurs (approximately 50 Hz). A peak acceleration of 8 gn is then maintained until the frequency is increased to 200 Hz.
Requirement Batteries meet this requirement if there is no leakage, no venting, no disassembly, no rupture and no fire during the test and after the test and if the open circuit voltage of each test battery directly after testing in its third perpendicular mounting position is not less than 90% of its voltage immediately prior to this procedure.
Test Data showed in table below
Sample
Prior to test
Sub-No.
001 002 003 004 005 006 007 008
Mass (g)
2565.1 2562.4 2565.5 2566.4 2564.1 2564.6 2563.6 2563.9
Voltage (V)
53.75 53.74 53.73 53.77 53.75 53.75 53.74 53.76
After test
Mass (g)
2565.1 2562.4 2565.5 2566.4 2564.1 2564.6 2563.6 2563.9
Voltage (V)
53.74 53.74 53.73 53.76 53.75 53.74 53.74 53.75
Mass loss (%)
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Voltage after test/ voltage prior to test
(%) 99.98
100.0
100.0 99.98
100.0
99.98
100.0
99.98
Results
PASS PASS PASS PASS PASS PASS PASS PASS
Notes : During and after the test, there is no leakage, no venting, no disassembly, no rupture and no fire. Room temperature : 21.4°C
Shenzhen NTEK New Energy Technology Co., Ltd. Tel: +86(0)-755-3699 5529 http://www.ntekbat.org.cn
RE-093 A/0
Test T.4: Shock
Page 11 of 15
Report No./ P23042707701
Test method Batteries are secured to the testing machine by means of a rigid mount which will support all mounting surfaces of each test battery. Each battery is subjected to a half-sine shock of peak acceleration depending on the mass of the battery. The pulse duration is 6 milliseconds. Each battery is subjected to three shocks in the positive direction followed by three shocks in the negative direction of three mutually perpendicular mounting positions of the battery for a total of 18 shocks.
The formula below is provided to calculate the appropriate minimum peak accelerations.
Mass of the batter
Minimum peak acceleration
Pulse duration
4.482 kg
150 gn
6 ms
4.482 kg
not applicable
6 ms
- Mass is expressed in kilograms. Requirement : Batteries meet this requirement if there is no leakage, no venting, no disassembly, no rupture and no fire and if the open circuit voltage of each test battery after testing is not less than 90% of its voltage immediately prior to this procedure.
Test Data showed in table below
Sample Sub-No.
001
Prior to test
Mass
(g) 2565.1
Voltage
(V) 53.74
After test
Mass
(g) 2565.1
Voltage
(V) 53.74
Mass loss (%)
0.000
Voltage after test/ voltage prior to test
(%)
100.0
002
2562.4 53.74 2562.4 53.74
0.000
100.0
003
2565.5 53.73 2565.5 53.73
0.000
100.0
004
2566.4 53.76 2566.4 53.76
0.000
100.0
005
2564.1 53.75 2564.1 53.75
0.000
100.0
006
2564.6 53.74 2564.6 53.74
0.000
100.0
007
2563.6 53.74 2563.6 53.74
0.000
100.0
008
2563.9 53.75 2563.9 53.75
0.000
100.0
Notes : After the test, there is no leakage, no venting, no disassembly, no rupture and no fire. Room temperature : 21.6°C
Results
PASS PASS PASS PASS PASS PASS PASS PASS
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Test T.5: External short circuit
Page 12 of 15
Report No./ P23042707701
Test method : Batteries to be tested are heated for a period of time necessary to reach a homogeneous stabilized temperature of 57 ± 4 °C, measured on the external case. This period of time depends on the size and design of the battery and is assessed and documented. Then the battery at 57 ± 4 °C is subjected to one short circuit condition with a total external resistance of less than 0.1 ohm. This short circuit condition is continued for at least one hour after the battery external case temperature has returned to 57 ± 4 °C. The short circuit and cooling down phases are conducted at least at ambient temperature.
Requirement : Batteries meet this requirement if their external temperature does not exceed 170°C and there is no disassembly, no rupture and no fire during the test and within six hours after test.
Test data showed in table below
Sample Sub-No.
001 002 003 004 005 006 007 008
Maximum outer casing temperature (°C) 56.7 56.8 56.9 57.1 56.7 56.8 56.7 56.8
Results
PASS PASS PASS PASS PASS PASS PASS PASS
Notes : There is no disassembly, no rupture and no fire during the test and within six hours after test. Room temperature : 22.7°C
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RE-093 A/0
Test T.6: Impact
Page 13 of 15
Report No./ P23042707701
Test method : Each component cell is to be placed on a flat smooth surface. A 15.8 mm ±0.1 mm diameter, at least 6 cm long, or the longest dimension of the cell, whichever is greater, Type 316 stainless steel bar is to be placed across the centre of the sample. A 9.1 kg ± 0.1 kg mass is to be dropped from a height of 61 ± 2.5 cm at the intersection of the bar and sample in a controlled manner using a near frictionless, vertical sliding track or channel with minimal drag on the falling mass. The vertical track or channel used to guide the falling mass shall be oriented 90 degrees from the horizontal supporting surface. The test sample is to be impacted with its longitudinal axis parallel to the flat surface and perpendicular to the longitudinal axis of the 15.8 mm ± 0.1mm diameter curved surface lying across the centre of the test sample. Each sample is to be subjected to only a single impact.
Requirement : Component cells meet this requirement if their external temperature does not exceed 170°C and there is no disassembly and no fire during the test and within six hours after the test.
Test data showed in table below
Sample Sub-No.
009 010 011 012 013 014 015 016 017 018
Maximum outer casing temperature (°C) 23.1 24.2 23.7 23.4 24.1 23.9 23.8 23.2 23.4 23.1
Results
PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS
Notes : There is no disassembly, no rupture and no fire during the test and within six hours after the test. Room temperature : 21.7°C
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RE-093 A/0
Test T.7: Overcharge
Page 14 of 15
Report No./ P23042707701
Test method : The charge current is twice the manufacturer’s recommended
maximum continuous charge current. The minimum voltage of the test is as
follows:
When the manufacturer’s recommended charge voltage is not more than 18V, the
minimum voltage of the test is the lesser of two times the maximum charge
voltage of the battery or 22V.
When the manufacturer’s recommended charge voltage is more than 18V, the
minimum voltage of the test shall be 1.2 times the maximum charge voltage.
Tests are to be conducted at ambient temperature. The duration of the test is
24 hours.
Requirement : Batteries meet this requirement if there is no disassembly and
no fire during the test and within seven days after the test.
Test data showed in table below Overcharge current (mA)……………………: Overcharge
voltage (Vdc)…………………..: Duration of the test (hours) ……………..:
Sample Sub-No. 019 020 021 022 023 024 025 026
2×3000=6000mA 1.2×54.6=65.52V
24 hours Results PASS PASS PASS PASS PASS PASS PASS PASS
Notes : There is no disassembly and no fire during the test and within seven days after the test. Room temperature : 21.7°C
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Test T.8: Forced discharge
Page 15 of 15
Report No./ P23042707701
Test method : Each component cell is forced discharged at ambient temperature by connecting it in series with a 12V D.C. power supply at an initial current equal to the maximum discharge current specified by the manufacturer. The specified discharge current is to be obtained by connecting a resistive load of the appropriate size and rating in series with the test cell. Each cell is forced discharged for a time interval (in hours) equal to its rated capacity divided by the initial test current (in ampere).
Requirement : Component cells meet this requirement if there is no disassembly and no fire during the test and within seven days after the test.
Test data showed in table below Initial current (mA)………………………………..:
Supply voltage (Vdc) …………………………….:
Time interval (Minutes)………………………….:
Sample Sub-No.
Results
027
PASS
028
PASS
029
PASS
030
PASS
031
PASS
032
PASS
033
PASS
034
PASS
035
PASS
036
PASS
14700mA 12Vdc 21 Minutes
Sample Sub-No.
037 038 039 040 041 042 043 044 045 046
Results
PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS
Notes : There is no disassembly and no fire during the test and within seven days after the test. Room temperature : 21.1°C
End of Test Report
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Important Notice
1. The test report is invalid without the Report Seal of NTEK and Paging seal
of NTEK. 2. Nobody is allowed to photocopy or partly photocopy this test
report without written
permission of NTEK. 3. The test report is invalid without the signatures of
Approver, Reviewer and Testing
engineer. 4. The report is invalid when anything of following happens
illegal transfer, reproduce,
embezzlement, imposture, modification or tampering in any media form. 5.
Objections to the test report must be submitted to NTEK within 15 days. 6. The
test report is valid for the tested samples only. 7. The Chinese contents in
this report are only for reference.
Shenzhen NTEK New Energy Technology Co., Ltd. Address 1: Room 101, Building C, Fenda Hi-Tech Park, Sanwei Community, Hangcheng Subdistrict, Bao’an District, Shenzhen, Guangdong, China. Address 2: 1/F., Building D, Huashengtai Technology Building, No.36, Hangkong Road, Hangcheng Street, Bao’an District, Shenzhen, Guangdong, China.
Tel +86(0)-755-3699 5529
E-mail Quality@ntekbat.org.cn
Website http://www.ntekbat.org.cn
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