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LX93134203A30

Safety Characteristics:

NO.	Items	Technical Requirements	Test Methods & Steps
1	Overcharge Test	No explosion. No fire.	a）Standard charge； b）Charged to 6.3V with 30A current, or charged for 90min, observing for 1h.
2	Over-discharge Test	No explosion. No fire. No leakage.	a）Standard charge； b）Discharged with 30A current for 90min, observing for 1h.
3	Short-circuit Test	No explosion. No fire.	a） Standard charge； b） Connect the cell(battery module) positive and negative terminals with wire for 10min directly. The resistance of external line should be less than 5mΩ, observing for 1h.
4	Nail penetration Test	No explosion. No fire.	a）Standard charge； b）Penetrate the cell(battery module) from the vertical direction throughout the inside plates with the φ6mm ~φ8mm needle at (25 ± 5) mm/s speed (needle stays in the battery) , observing for 1h.
5	Crushing Test.	No explosion. No fire.	a）Standard charge； b）According to the following test conditions: Squeezing direction: Pressure perpendicular to the battery plates； Squeezing paper shape: half cylinder with 75mm diameter, whose length is more than the size of cell,but is less than 1m. Squeezing speed: （5±1）mm/s； Squeezing level: Until the battery voltage becomes 0V or the deformation is to 30% or the press is to the value listing in table 1 , stop squeezing； c)observing for 1h.
6	Drop Test	No explosion. No fire. No leakage.	a）Standard charge； b）The cell(battery module) drops with two terminals down from a height of 1.5m onto the cement floor freely, observing for 1h.
7	Heating	No explosion. No fire.	a）Standard charge； b)Put the cell(battery module) into the incubator, the temperature is up from room to 130±2℃ at the speed of 5℃/min, and stop heating after lasting for 30min,observing for 1h.
8	Immersing in seawater	No explosion. No fire.	a）Standard charge； b)The cell(battery module) is submerged into 3.5(wt)% NaCl solution for 2h entirely.
9	Temperature cycle	No explosion. No fire. No leakage.	a）Standard charge； b)Put the cell(battery module) into the incubator, the temperature adjust according to table 2, repeating 5 times, and observing for 1h.
10	Low air pressure	No explosion. No fire. No leakage.	a）Standard charge； b)Put the cell(battery module) into the low air pressure box, and set air pressure at 11.6 kPa, laying for 6h at room temperature, and observing for 1h.

Notes: 1、The module contains five or more cells in series.

2、 Refer to GB/T 31485-2015 power battery safety require and test methods for electric vehicles .

Table 1 Squeezing force selecting standard

Cell number /n	Squeezing force/ KN
1	200
2~5	100×n
>5	500

Table 2 temperature and time of one temperature cycle test

temperature/℃	time/min	Adding time/min	Temperature change rate ℃/min
25	0	0	0
-40	60	60	13/12
-40	90	150	0
25	60	210	13/12
85	90	300	2/3
85	110	410	0
25	70	480	6/7

Specification:

NO.	Items	Specifications
1	Charge voltage	4.2V
2	Nominal voltage	3.6V
3	Nominal capacity	30Ah @ 0.33C Discharge
4	Typical capacity	30.5Ah
5	Charge current	Standard Charging: 0.33C Rapid charge： 1.0C
6	Standard Charging method	0.33C CC（constant current）charge to 4.2V,then CV(constant voltage 4.2V)charge till charge current decline to ≤0.033C
7	Charging time	Standard Charging： 4hours(Ref.) Rapid charge： 2hours(Ref.)
8	Max.charge current	1.0C
9	Max.discharge current	2.0C
10	Discharge cut-off voltage	3.0V
11	Operating temperature	Charging： 10℃~45℃ Discharging：-20℃~55℃
12	Storage temperature	-20℃~ +55℃
13	Cell Weight	≈530g
14	Cell Dimension	Length :203mm Max Width :134mm Max Thickness :9.3mm Max

Electrical characteristics:

NO.	Items	Test Method and Condition	Criteria
1	Standard Charge	Charging the cell initially with constant current at 0.33C and then with constant voltage at 4.2V till charge current declines to 0.033C
2	Rated Capacity	The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.33C with 3.0V cut-off voltage after standard charge.	≥30Ah
3	Cycle Life	Test condition： Charge:0.33C to 4.2V Discharge:0.5C to 3.0V 80% or more of 1st cycle capacity at 0.33C discharge of Operation	≥4000次
4	Self-discharge	After the standard charging, storied the cells under the condition as No.4.4 for 30 days, then measured the capacity with 0.33C till 3.0V	Residual capacity >90%
5	Initial impedance	Internal resistance measured at AC 1KHz after 50% charge	≤2mW
6	Cell Voltage	As of shipment.	3.5V~4.1V
7	Temperature Characteristics	1. According to item 4.1.1, at 23±5℃. 2. Capacity comparison at each temperature, measured with constant discharge current 0.33C with 3.0V cut-off. Percentage as an index of the capacity compared with 100% at 23℃	55℃: ≥96% 23℃: 100% -20℃: ≥70%
8	Storage Characteristics	1. According to item 4.1.1, at 23±5℃. 2. The battery shall be stored at 55±5℃ for 7days and rested at room temperature for 1 hour then measured with constant discharge current 0.33C with 3.0V cut-off.	Retained Capacity ≥85%