4.2V 2850mAh LG INR18650C4 Cell
LG INR18650 C4
The LG inr18650 c4 cell comes up with a nominal capacity of 2850mAh, the voltage of 3.65V. This is an absolutely excellent cell for anyone seeking high performance 18650 cells.
HIGHLIGHTS OF LG INR18650 C4
Nominal capacity: 2850mAH
Minimum capacity: 2750mAh
Nominal voltage: 3.65V
Discharge end voltage: 2.75V
Standard charge: 1375mA (0.2C)
Max. charge voltage: 4.2V +/- 0.05V
Max. charge current: 2750mA (1C)
Cycle life: 300 cycles to 75% charge/discharge 0.5C
Max. discharge current: 1375mA -20°C ~ 5°C, 5500mA (2C) 5°C ~ 45°C, 4125mA 45°C ~ 60°C
Operating temperature: charge: -3°C ~ 50°C, discharge: -20°C ~ 60°C
APPLICATION: LED flashlights; Toys Electronics power devices.
FEATURES:
1.2C continuous discharge current
2.High discharge performance
3.Fast charge and no memory effect
4.Reliable and safe
APPEARANCE
There shall be no such defects as deep scratch, crack, rust, discoloration or leakage, which may adversely affect the commercial value of the cell.
Diameter : 18.29 ± 0.11 mm
Diameter is defined as the largest data value measured on the “A” area of a cylindrical cell.
Height : ≤ 65.15 mm
Nominal Specification of LG-INR18650-C4
| Item | Condition / Note | Specification |
|---|---|---|
| Capacity | Std. charge(0.5C) / discharge(0.2C) | Nominal 2850mAh (0.2C Cnom) |
| Minimum 2750mAh (0.2C Cmin) | ||
| Rated 2750mAh (0.2C Crated) | ||
| Nominal Voltage | Average | 3.65V |
| Standard Charge | Constant current | 0.5C (1375mA) |
| Constant voltage | 4.2V | |
| End current(Cut off) | 50mA | |
| Max. Charge Voltage | - | 4.2 ± 0.05V |
| Max. Charge Current | - | 1.0C (2750mA) |
| Standard Discharge | Constant current | 0.2C (550mA) |
| End voltage(Cut off) | 2.75V | |
| Max. Discharge Current | -20 ~ 5℃ | 0.5C(1375mA) |
| 5 ~ 45℃ | 2.0C(5500mA) | |
| 45 ~ 60℃ | 1.5C(4125mA) | |
| Weight | Approx. | Max. 48.5 g |
| Operating Temperature | Charge | -3 ~ 50oC |
| Discharge | -20 ~ 60℃ | |
| Storage Temperature( for shipping state) | 1 month | -20 ~ 60℃ |
| 3 month | -20 ~ 45℃ | |
| 1 year | -20 ~ 20℃ |
Performance Specification
Standard test condition
4.1.1 Standard Charge
Unless otherwise specified, “Standard Charge” shall consist of charging at constant current of 0.5C. The cell shall then be charged at constant voltage of 4.2V while tapering the charge current. Charging shall be terminated when the charging current has tapered to 50mA. For test purposes, charging shall be performed at 23ºC ± 2ºC.
4.1.2 Standard Discharge
“Standard Discharge” shall consist of discharging at a constant current of 0.2C to 2.75V. Discharging is to be performed at 23ºC ± 2 ºC unless otherwise noted (such as capacity versus temperature).
4.1.3 Fast Charge / discharge condition
Cells shall be charged at constant current of 0.5C to 4.2V with end current of 100mA. Cells shall be discharged at constant current of 0.5C to 3.0V. Cells are to rest 10 minutes after charge and 20 minutes after discharge.
Electrical Specification
| Item | Condition | Specification |
|---|---|---|
| Initial AC Impedance | Cell shall be measured at 1kHz after charge per 4.1.1. | ≤ 70 mΩ, with PTC |
| Initial Capacity | Cells shall be charged per 4.1.1 and discharged per 4.1.2 within 1h after full charge. | ≥ 2750 mAh (0.2C Cmin in 2.1) |
| Cycle Life | Cells shall be charged and discharged per 4.1.3 300 cycles. A cycle is defined as one charge and one discharge. 301st discharge capacity shall be measured per 4.1.1 and 4.1.2 | ≥75% of 0.2C Cmin in 2.1 |
Environmental specification.
| Item | Condition | Specification | |
|---|---|---|---|
| Storage Characteristics | Cells shall be charged per 4.1.1 and stored in a temperature-controlled environment at 23ºC ± 2ºC for 30 days. After storage, cells shall be discharged per 4.1.2 to obtain the remaining capacity*. | Capacity remaining rate ≥90% of 0.2C Cmin in 2.1 | |
| High Temperature Storage Test | Cells shall be charged per 4.1.1 and stored in a temperature-controlled environment at 60ºC for 1 week. After storage, cells shall be discharged per 4.1.2 and cycled per 4.1.3 for 3 cycles to obtain recovery capacity**. | No leakage, Capacity recovery rate ≥80% of 0.2C Cmin in 2.1 | |
| Thermal Shock Test | 65ºC (8h) ← 3hrs → -20ºC (8h) for 8 cycles with cells charged per 4.1.1 After test, cells are discharged per 4.1.2 and cycled per 4.1.3 for 3 cycles to obtain recovery capacity | No leakage Capacity recovery rate ≥80% of 0.2C Cmin in 2.1 | |
| High Temperature and High Humidity Test | Cells are charged per 4.1.1 and stored at 60ºC (95% RH) for 168 hours. After test, cells are discharged per 4.1.2 and cycled per 4.1.3 for 3 cycles to obtain recovery capacity. | No leakage, No rust Capacity recovery rate ≥80% of 0.2C Cmin in 2.1 | |
| Temperature Dependency of Capacity | Cells shall be charged per 4.1.1 at 23ºC ± 2ºC and discharged per 4.1.2 at the following temperatures. | ||
| Charge | Discharge | Capacity | |
| 23℃ | -10℃ | 70% of 0.2C Cmin in 2.1 | |
| 0℃ | 80% of 0.2C Cmin in 2.1 | ||
| 23℃ | 100% of 0.2C Cmin in 2.1 | ||
| 60℃ | 95% of 0.2C Cmin in 2.1 | ||
NOTE
Remaining Capacity : After storage, cells shall be discharged with Std. condition(4.1.2) to measure the remaining capacity.
** Recovery Capacity : After storage, cells shall be discharged with fast discharge condition(4.1.3), and then cells shall be charged with std.
charge condition(4.1.1), and then discharged with Std. condition(4.1.2). This charge / discharge cycle shall be repeated three times to measure
the recovery capacity
Warning:
1). Do not disassemble, dispose of in fire, heat or short circuit.
2).Do not insert batteries with the(+)and(-)reversed.
3). Do not mix fresh batteries with used batteries.
4).Do not submerge the battery in water
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