18650 li-ion battery pack 7.4V 2600mAh

Item : Li-ion battery
Voltage: 7.4V
Capacity: 6000mAh,5200mAh,5000mAh,4000mAh,3600mAh
PCM: yes
Safety protection: yes
Connector: As requirements
Dimensions: 37*37*67mm(max)

We supply battery pack voltage & capacity as customer’s requirements.

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Specification

Lithium Polymer Battery Specification

Product name: 18650 Li-ion Battery Pack

Product Item:  2S2P 18650 7.4V 5200mAh battery

1.Normal Specialties

NO Item Common Idex Note
1 Nominal Capacity Typical Capacity 5200mAh Standard Charged discharge at 0.2C5A,Repeat 5 times get average .
Minimum Capacity 5200mAh
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

Continue Voltage:4.20V

Cut-off Current:0.02C5A

Charge Time: About 5hours
7 Typical Discharge Continue Current:0.2C5A

Cut-off Voltage:3.0V

8 Way of Charge CC/CV
9 Max .Charge Current 5200mA Advice charge current:0.2C~0.5C
10 Max.Discharge Current 10400mA
11 Range of Temperature Operating Charging Temperature 0 ~ +45℃
Storage Humidity 60±25%RH
Operating Discharge Temperature -10 ~ +60℃
13 Fast Charge Continue Current:1C5A

Continue Voltage:4.20V

Cut-off Current:0.02C5A

Charge Time: About 2.5 hours
14 Fast Discharge Continue Current:1C5A

Cut-off Voltage:3.0V

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
20 Weight Appropriate:200g ±0.5g

 

  1. 2.Appearance

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.

  1. Performance

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
3 Drop Test 100% 23℃

Discharge Temperature

After standard charge, the battery is to be tested as following conditions:

Amplitude:1.6mm

Frequency:10~55Hz(sweep:1Hz/min)

Direction: X/Y/Z axis for 30min. The battery is to be tested in three mutually perpendicular to each axis.

95% 45℃
≥90% 2C Dicharge
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.Warning !!!
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.

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