Lithium Polymer Battery Specification
Product name: 18650 Li-ion Battery Pack
Product Item: 2S2P 18650 7.4V 5200mAh battery
|1||Nominal Capacity||Typical Capacity||5200mAh||Standard Charged discharge at 0.2C5A,Repeat 5 times get average .|
|2||Typical Voltage||7.4V||Work Voltage|
|3||Discharge Cut-off Voltage||5.6V||Discharge Cut-off Voltage|
|4||Max. Charge Voltage||8.4V||Charge Max Limited Voltage|
|5||IR||≤150mΩ||At Semi-state,use AC measured the IR (Less than a week after using the ship and cycle times of less than five times the new battery measurement )|
|6||Typical Charge||Continue Current：0.2C5A
|Charge Time: About 5hours|
|7||Typical Discharge||Continue Current：0.2C5A
|8||Way of Charge||CC/CV|
|9||Max .Charge Current||5200mA||Advice charge current:0.2C~0.5C|
|11||Range of Temperature||Operating Charging Temperature||0 ～ +45℃|
|Operating Discharge Temperature||-10 ～ +60℃|
|13||Fast Charge||Continue Current：1C5A
|Charge Time: About 2.5 hours|
|14||Fast Discharge||Continue Current：1C5A
|15||Max.Continue Charge Current||1C5A|
|16||Max.Continue Discharge Current||2C5A|
|17||PCM||SEIKO G3J+2*8205||SEIKO PCM|
|18||PCM safety protection||Over charge protection
Over discharge protection
Over voltage protection
Under voltage protection
Over current protection
Short circuit protection
|19||Storage Temperature Scope||Discharge :-10 ～ +60℃
( Less than one year:-20 ～ +25℃ ;
Less than 3 months :-20 ～ +40℃)
|At goods delivery situation, Humidity scope: 60±25%RH|
Battery doesn’t affect the commercial value of its shortcomings,such as: mechanical damage,deformation,discoloration. No such surface:leakage,stains,rust,leakage and other defects affecting goods marke value.
3.1 Standard Test Conditions
If not specified, the test shall be 25%-85% of the environment ,carried out at 20±5℃humidity ,the humidity is too much will effect on the accuracy of test results, the test must be used for no more than a new battery after shipment from our factory,and the cells not be cycled more than 5 times before the test .
3.2 Measuring Instrument or Apparatus
3.2.1 Dimension Measuring Instrument. Accuracy of 0.01mm caliper range is 0-200mm
3.2.2 Voltmeter and Ammeter.
Voltmeter accuracy of ±5mV, range is 0-20V; Ammeter accuracy of present current ±(0.3%±30mA)
3.3 Nominal Charged Test Conditions
At20±5℃,the testing process that standards as follows: first 0.5 C5A constant battery charge to 4.20V,when the charge current decreases, then charged to 4.20V constant currect is reduced to 0.02C5A,the charging time is about 3 hours.
3.4 Nominal Discharged Test Conditions
At20±5℃,battery constant discharge to 3.0V,Unless otherwise defined, 30min, rest period after charge,30min,rest period after discharge.
3.5 Battery Performance Test
|No||Item||Standard||Test Conditions||Test Ways|
|1||Leakage Test||No leakage||Typical full charged new battery||Standard charge condition,full charge after 60±5℃temperature, humidity 60±10%RH storage one month.|
|2||Vibration Test||80%||Discharge Temperature|
|After standard charge, the battery is to be tested as following conditions:
Direction: X/Y/Z axis for 30min. The battery is to be tested in three mutually perpendicular to each axis.
|No electrolyte leakage, smoke||Typical full charged new battery|
|No electrolyte leakage, smoke or explosion||Typical full charged new battery||Drop the battery in the shipment condition(full- charge)from 1m height onto thicker concrete with p-tile on it 2 times each of obverse.|
|4||Squeeze Test||No electrolyte leakage, smoke||Typical full charged new battery||Battery placed between two flat metal plate ,applied 13KN（1.72Mpa） force,and continued for 30 min.|
|5||Short-Circuit Test||No explosion,no fire.The temperature of the exterior cell casing shall not exceed 150℃||Typical full charged new battery||At normal temperature about 25±5℃，After standard charge, the battery is to be short-circuited by connecting the positive and negative terminals of the battery with copper wire having a maximum resistance load of ＜10mΩ.|
|6||Impact Test||No fire, no explosion||Typical full charged new battery||The battery to be fully charged with standard charging condition, and put a rod with diameter 56mm on the cell, and then heavy block (weight 10Kg) crash on the cell from a certain height(height=100cm).|
|7||Over-discharge Test||No fire, no explosion||Typical full charged new battery||The fully discharged cell is continually discharged for 2.5hours with 1 C5A current.|
|8||Prick Test||No fire, no explosion||Typical full charged new battery||The full charged battery with a needle φ3mm at speed 10-40mm/s from perpendicular to the battery plates through (needle stays in the battery)|
4.1 Battery usage should notice follow warnings:
* Do not directly heated or thrown in fire.
* Do not store at environment of high tep (over 60℃)
* Do not directly short circuit battery
* Do not with the acid corrosion of battery.
* Do not thrown water or swallow in other Liquid , do not store in humidity environment .
* Do not beat and impact battery.
* Prohibit changing the batteries and battery internal anatomical structures.
* Prohibit usage a damaged battery
* Prohibit the battery immersed in liquid which like water,sea water and non-alcoholic drinks, juice ,coffee or other beverages.
7.2 Charging Notice
* Charge temperature at 0℃~+45℃
* Do not charge battery at the contrary direction.
* Charging method is to charge the battery must not directly prohibit the use of the alternating current to charge the battery.
* Use specified charger and according to our company manual to use the proper ways to use our products while charging.
7.3 Discharging Notice
* Discharge temperature at 0℃~+60℃.
* Discharge set Min.Discharge voltage not less than 3.0V.
* Discharge current do not over specification ruled Max current.
7.4 Storge Notice
* After a long time of storage batteries to pre-cycle 3 times
* Store in a dry and lower temperature environment.
* Storage long time no over 30% of the battery.