12V 20Ah solar energy storage battery

Item : Li-ion battery 3S8P
Voltage: 12V
Capacity: 20.8Ah
PCM: yes
Safety protection: yes
Connector: As requirements
Dimensions: 56*68*150mm(max)
Weight:1.2Kg
We supply battery pack voltage & capacity as customer’s requirements.

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Specification

Li-ion Battery Pack Specification

Product name:  Solar Energy Storage Battery

Product Item: 18650 12V 20.8Ah li-ion battery pack

1. Normal Specialties

1. Normal Specialties

NO Item Common Idex Note
 

1

Nominal Capacity Typical Capacity 20800Ah Standard Charged discharge at

0.2C5A,Repeat 5 times get average .

Minimum Capacity 20800mAh
2 Typical Voltage 11.1V Work Voltage
Charge cut-off voltage 12.6V
3 Discharge

Cut-off Voltage

8.5V Discharge Cut-off Voltage
4 Max. Charge

Voltage

12.6V Charge Max Limited Voltage
 

 

5

 

 

IR

 

 

≤150Ω

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

Range of Temperature Operating Charging Temperature 0 ~ +45℃
Storage Humidity 60±25%RH
Operating Discharge Temperature -10 ~ +60℃
 

10

Fast Charge Continue Current:1C5A Continue Voltage:4.20V

Cut-off Current:0.02C5A

 

Charge Time: About 2.5 hours

11 Fast Discharge Continue Current:1C5A Cut-off Voltage:3.0V
12 Max.Continue

Charge Current

1C5A
13 Max.Continue

Discharge Current

2C5A
14 PCM SEIKO G3J+2*8205 SEIKO PCM
 

 

 

15

 

 

PCM safety protection

*Over charge protection *Over discharge protection *Over voltage protection *Under voltage protection *Over current protection

*Short circuit protection

 

16

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
17 Weight Appropriate:300g ±0.5g
18 Dimensions 38*56.5*56mm T*W*H mm

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.

3.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

  • Dimension Measuring Instrument. Accuracy of 0.01mm caliper range is0-200mm
  • Voltmeter and

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-disch arge 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.

4.2  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.

4.3 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.

4.4 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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