power-xtra PX7500WB User manual

MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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Specification for Lithium-ion/Polymer Battery
Product Modification Record
Model
Description : PX7500WB : Power-Xtra PX7500WB 14.8V 4S2P 7500 mAh (45C) Li-Polymer Battery
Prepared by
Checked by
Approved by
CELL PACK
Heyong Kelly Deng Yongca�Guo J�nghu�Ma�
Note : After the receipt of the finished product specification data sheet, please kindly confirm in time. The specification of the
product after the product finalized is effective only after both of the two parties, the manufacturer and the customer, sign and
stamp with a across-page seal on. As the specification of the drawings is only the schematic drawings, there may be some
difference with the physical objects. Power-Xtra reserves the final interpretation of it.
Please return this sheet after your approvals.
Revision Date Modified content
A0 2018-07-04 Original Release

Scope
Main Technical Parameter
This specification describes the technical parameter, testing method and using requirement of
Lithium-ion Battery manufactured by Power-Xtra GROUPE INTERNATIONAL LIMITED
Battery specifications
Item
Parameter
Remark
Capac�ty
Nom�nal Capac�ty
7500mAh
Fully D�scharge to 12.0V @ 0.2C.after
standard charge
Nom�nal Voltage 14.8V Average D�scharge Voltage
(d�scharged at 0.2CmA)
Conf�gurat�on 4S2P
Cell Conf�gurat�on
Max Charge Voltage 16.8V 4.2V/Cell
Sh�pments of Open-c�rcu�t voltage 14.8-15.84V Test w�th�n 30 days from the date of
sh�pment
Internal res�stance ≤23.4mΩ Test through the d�scharg�ng w�re
term�nal
Standard D�scharge current 7.5 A 1.0C
Burst D�scharge Current 337.5A 45C
Standard charge current 7.5A 1.0C
Max�mum charge current 15.0A 2.0C（Ref.Temperature:10~45℃）
Overcharg�ng protect�on Voltage 4.2V/Cell
Over-d�scharg�ng Protect�on Voltage 3.0V/Cell
D�mens�on Max 49.0*47.5*139.5 mm
We�ght 640.0g Max
Work�ng Temperature Range
10~45℃10~45℃
-20~60℃-20~60℃
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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Testing method and conditions
Performance
Standard test conditions
Measuring Equipment requirements
Standard Charge
Electricity Characteristics
The battery for test must be new produced no more than 1 month. Unless otherwise specified, all tests stated in this Specifi-
cation shall be proceeded in the following conditions:
Temperature of 23±2℃, the relative humidity of 45%~65%RH, atmospheric pressure is 86kPa~106kPa。
• Slide caliper should have an accuracy of the grade 0.01mm or higher.
• The multimeter should have an accuracy of the grade 0.5 or higher. The impedance when testing voltage should be more
than 10KΩ/V.
• The impedance meter with AC 1 kHz should be used.
• For the battery testing system, the accuracy of current should be more than ±0.1%, the accuracy of voltage should be more
than ±0.5% and the accuracy of time should be more than ±0.1%.
• The thermometer should be have an accuracy of the grade 0.5℃or higher.
1.0CmA (7500mA) 16.8V (CC-CV) ,Cut-off current is 0.05CmA。
Note: Charging equipment special for Lithium-ion Polymer battery must be used only for the above charging.
Standard Discharge
1.0CmA(7500mA) CC Discharge cut-off Voltage 12.0V
Standing Time
Unless otherwise specified, between battery charging and discharging, there is a 30min interval or more.
Item Testing method
Requirement
Open-circuit voltage ≥16.4V
Measure the open-circuit voltage of the battery
within 24 hours after the Standard Charge
AC Resistance Resistance of
Battery Pack≤23.4mΩ
After half charge, measure the resistance through
the discharge wires at AC 1KHz ,23±2℃
Capacity Discharge Capacity
≥ 100%(min Capacity）
Discharge the battery with a constant current of
0.2CmA(1500mA) to 12.0V after Standard
Charge and rest 30min
Cycle Life Performance Cycle Life≥300 cycles
Discharge Capacity≥80%
Measure capacity under the cycle conditions
described below, until the discharge capacity
≤80% for three times. Cycle conditions: Standard
Charge（CC-CV，7500mA，16.8V),Rest for
30min; Discharge with 1C, 12.0V cutting off.
Testing temperature is 23±2℃
Discharge Temperature
Characteristics
-20℃≥60%
25℃≥100%
60℃≥95%
Heat or cool the battery to the testing temperature
within 30min and rest for 3 hours after standard
charge at 23±2℃, then discharge at 1.0CmA .
When a test finished, charge the battery after
rested 2 hours at room temperature (23±2℃)
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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Storage Characteristics
Mechanical Performance
Item Testing method
Requirement
General Temperature
Storage
Characteristics
1
1
Remaining
Capacity≥85% C1.0
Recovery
Capacity≥90% C1.0
Recovery
Capacity≥85% C1.0
Recovery
Capacity≥85% C1.0
Remaining
Capacity≥65% C1.0
Store the battery, which is charged at standard charge
condition, for 30 days at 23±2℃.Measure the remaining
capacity of the battery with1.0CmA discharge
Charge and discharge with 1.0CmA for 3 cycles.
Measure the recovery capacity (the max. discharge
capacity for three cycles)
High Temperature
Storage
Characteristics
Long-term
Storage Characteristics
Store the battery, which is charged at standard charge
condition, for 7 days under 60±2 ℃.Measure the
remaining capacity of the battery with 1.0CmA discharge
Charge and discharge with 1.0CmA for 3 cycles.
Measure the recovery capacity
(The max. discharge capacity for three cycles)
Store the battery at 23±2℃for 365 days after charging
the battery with 50% capacity, then charge and
discharge the battery with 1.0CmA , under 23±2℃for 3
cycles. Measure the recovery capacity
(The Max. discharge capacity for three cycles)
2
2
Item Testing method
Requirement
Constant humidity a d
temperature test
Vibration test
Free drop test
Discharge
Capacity≥80% C1.0
The battery have no
obvious defaced, no
leakage, no fire or no
explosion.
The battery have no
obvious defaced, no
leakage, no fire or no
explosion
Remaining
Capacity≥85% C1.0.
Recovery
capacity≥90% C1.0
Put the battery into an oven of constant humidity
(90%~95%)
and constant temperature (40±2℃), rest for 48 hours,
take it out and rest for 2 hours at 23±2℃, then
discharge with 1.0CmA ,12.0V cutting off.
Fix the battery on a vibration table, vibrate it at X, Y, Z
orientation. Change the frequency of vibration with
1Hz/min from 10Hz to 55Hz, redo it for 30min
Frequency: 10~30Hz Swing distance: 0.38mm
Frequency: 30~55Hz Swing distance: 0.19mm
Do the free drop test according to the condition
described below after finished the vibration test
Altitude: 1.0m
Receiver: a hard board of 18~20mm
Orientation: Six sides of battery at horizontal
Discharge the battery to 12.0V with 1.0CmA CC, then
charge-discharge the battery 3 cycles, measure the
discharge capacity
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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PCM Specification and Characteristic
Storage Characteristics
Item Testing method
Requirement
Extrusion test No fire, no explosion
When the battery is fully charged, set the battery
between the two plates, with the extrusion force
gradually up to 13KN. Once the maximum force has
been applied, the force is released. The plane of the
extrusion device should be extruded against any plane
where the anode and cathode tap of the battery are
parallel with.
TitleNo Specifications Remark
Unit Qty
1 cell 5644129XL PCS 8
JST-XHR-5P 3239-22# PCS 1
3239-10# PCS 2
33 1
2
3
4
≤75%RH
30-60%
Storage and Shipment Requirement
PCM Circuit Diagram
PCM Electrical Characteristics
PCM Material List
Mounting structure
Battery materials
Item Requirement
Remarks
Storage temperature
Humidity
State of Charge (SOC)
The best temperature
for shipment is 23±5℃
Pack 14.8-15.84V
Pack Voltage14.8-15.84V
1 month
3month
1year
： -20℃~+45℃
：-20~30℃
：-20~25℃
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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Packaging Instruction (Inner packaging)
The photo, size and color of the mark are all comply with the requirement of GP/T 191-2000.
Battery Dimension (Unit: mm) and Structure
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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• The warranty period of a battery is half a year from the delivery date of shipment. The detective product caused by
Power-Xtra GROUPE INTERNATIONAL LIMITED will be returned within the warranty period.
• For the use of the battery exactly, in order to obtain optimum performance and safety, the Customer shall strictly observe
this item described below. The defects other than those caused by user overstep this Specification shall be excluded from the
warranty of Power-Xtra GROUPE INTERNATIONAL LIMITED
• Any matters which are not covered in this specification should be negotiated between the customer and Powe-Xtra.
Product Cautionary Statement and Disclosure
User manual
Warranty period of battery and Quality guarantee
Power-Xtra GROUPE INTERNATIONAL LIMITED, Ltd will not take any responsibility for the problems caused by incorrect
operation beyond the specification.
Note(1): The battery might be at an over-discharged state because of its self-discharge characteristics if the battery is not
used for long time. In order to prevent over-discharging, the battery should be charged (at least once every three months)
periodically to maintain the voltage between (3.7V and 3.9V)*N ((n represents the number of series of cell)).
Note(2): Power-Xtra GROUPE INTERNATIONAL LIMITED, Ltd will not take any responsibility for the problems caused by
improper use of PCM, battery pack, RC model and charger.
Note(3): It is necessary to use the charger with protection balanced function to charge if the finished battery without PCM.
Note(4): Power-Xtra GROUPE INTERNATIONAL LIMITED, Ltd will not take any responsibility for products beyond the warranty
period.
Note(5): The charging current can’t exceed the maximum charging current in this specification; The charging with higher
current than recommended value may caused the problems of performance of charge & discharge, mechanical and safety,
and may lead to fever or leakage. The maximum charging voltage can’t exceed this specification.
Note(6): The cell shall be discharged at less than the maximum discharge current specified in the Product Specification；
High discharging current may reduce the discharging capacity significantly or cause over-heat.
Note(7): Power-Xtra will not take any responsibility for battery damaged resulting from the client assembly after the products
were accepted.
• Stop using the battery immediately whenever it deforms, swells, leaks.
• Check the total output of the battery pack if the appearance is normal. Within one month of shipment, the total output is
within the standard as specification sheet shows, confirmed it is OK if in this range;
• Once the total voltage output is confirmed OK, test each cell voltage. Within one month of shipment, the standard of the
single cell output is in the range of 3.70V ~ 3.96V, and it is OK again if it is in this range;
• Once the total voltage and cell voltage are confirmed OK, test the total internal resistance through the discharge wire, if its
total internal resistance standard is within the standard range as specification sheet shows, it is OK for normal using.
• The battery might be in over-discharge status because of its self-discharged characteristics if no battery operation for a
long time. To prevent over-discharge occurs, the battery should be charged regularly to maintain its power between 30%
~60%. Over-discharge will lead to the loss of battery function;
• Battery long-term storage process, the remaining capacity should be between 30 to 60%, about 50% at best status. High
voltage storage conditions will accelerate the self-discharge, increase the side reaction products, and may damage the
battery performance;
• Battery long-term storage temperature is 0℃~ 30 ℃, for the storage period of more than 3 months, battery pack needs to
be activated before use. Activation means that charge the battery pack with a balanced charger, charging until the
electricity is displayed at 100% SOC, then discharged at a current of 0.2CmA to the voltage protection, and then charge the
battery to about 50% SOC with the balance charger;
• Do not discharge battery pack with less than 3.2V * N (N refers to the number of batteries in series) otherwise it will lead to
the battery pack performance degradation and shorten its cycle life;
• Recommend to remain no less than 20% of the battery electricity after the end of using.
Notice
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
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Warnings
The battery will fire, explode or leak if not strictly observing this item described below.
• Do not immerse the battery in water or seawater, and keep the battery in a cool dry environment during stands by period.
• Do not mix using the battery with one-off battery (such as dry battery) or different performance together.
• Keep all batteries out of the reach of little children. Consult a doctor immediately if a battery is swallowed.
• Do not use or leave the battery near a heat source such as fire or heater.
• Use the battery charger specifically for that purpose when recharging.
• Do not reverse the positive (+) and negative (-) terminals.
• Do not connect the battery to an electrical outlet.
• Do not dispose the battery in fire or heat.
• Do not short-circuit the battery by directly connecting the positive (+) and negative (-) terminals with metal objects such as
wire.
• Do not transport or store the battery together with metal objects such as necklaces, hairpins etc.
• Do not strike or throw the battery against hard surface.
• Do not directly solder the battery.
• Do not unpack the battery with a nail or other sharp object.
• Never disassembling the battery in any way.
Cautions
• Do not use or leave the battery at very high temperature (for example, at strong direct sunlight or in a vehicle in extremely
hot weather). Otherwise, it can overheat or fire or its performance will be degenerate and its service life will be shortened.
• Do not use it in a location where static electricity is rich, otherwise, the safety devices may be damaged, causing a harmful
situation.
• In case the electrolyte getting into the eyes due to the leakage of battery, do not rub the eyes! Rinse the eyes with clean
running water, and seek medical attention immediately. Otherwise, it may injure eyes or cause a loss of sight.
• If the battery gives off an odor, generates heat, becomes discolored or deformed, or in any way appear abnormal during use,
recharging or storage, immediately remove it from the device or battery charger and place it in a contained vessel such as a
metal box
• In case the battery terminals are contaminated, clean the terminals with a dry cloth before use. Otherwise power failure or
charge failure may occur due to the poor connection between the battery and the electronic circuitry of the instrument
• Be aware discarded batteries may cause fire, 100%discharged the battery and tape the battery terminals to insulate them
before disposal.
• Battery disposal: The scrapped cells or packs should be handed over to professional recycling battery companies or institu-
tion for disposal.
MODEL
STOCK NO : :PX7500WB 900.869.503.159
Battery Solutions
www.power-xtra.com