Lithium Polymer Battery Specification
Product name: Flat Lithium-Polymer Rechargeable batteries
Product Item: 18650 7.4V 2600mAh
1.Normal Specialties
NO | Item | Common Idex | Note | |
1 | Nominal Capacity | Typical Capacity | 2600mAh | Standard Charged discharge at 0.2C5A,Repeat 5 times get average . |
Minimum Capacity | 2600mAh | |||
2 | Typical Voltage | 11.1V | Work Voltage | |
3 | Discharge Cut-off Voltage | 8.4V | Discharge Cut-off Voltage | |
4 | Max. Charge Voltage | 12.6V | 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 | 2600mA | Advice charge current:0.2C~0.5C | |
10 | Max.Discharge Current | 5200mA | ||
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:90g | ±0.5g |
- 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.
- 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) |