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Contacts:
Fiona Fong
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+86 17718177652
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Email:
fangqi@ecolto.com
CTO: Morley.lee@ecolto.com
1.Scope
Only applicable to rechargeable lithium-ion capacitor batteries or battery packs produced by Hefei ECOLTO Energy Co.,Ltd including lithium ion battery cells and protection components.
2.Battery Constitution
| No. | Name | Model | Remark |
| One piece of cell | One piece of cell | HC04120-3mAh-2.4V | / |
3.Specification
| No. | Items | Criteria | Remarks |
| 3.1 | Typical Capacity | 3mAh [±20%] | 0.5C charge and discharge for cut-off voltage |
| 3.2 | Nominal Voltage | 2.4V | / |
|
3.3 |
Internal Impedance |
≤1200mΩ | AC 1KHz after standard charge Temperature:20℃±3℃ Relative humidity:≤85% Product voltage:≥2.4V |
| 3.4 | Charge cut-off voltage | 2.8V | / |
| 3.5 | Standard charge current | 3mA | 1C |
| 3.6 | Max,charge current | 30mA | 10C |
| 3.7 | Standard dis-charge current | 3mA | 1C |
| 3.8 | Max,discharge current | 30mA | 10C |
| 3.9 | Discharge cut-off voltage | 1.5V | / |
| 3.10 | Temperature
| -20～+100C | Operating Temp.Range |
| -20～+70C | Storage Temp.Range |
4.Battery Drawing
4.1 Dimension(mm)
| Dimension | (mm) |
| ①D | 3.9±0.1 |
| L1 | 12.0±0.5 |
| L2 | 17.5±10 |
| L3 | 14±1.0 |
| ①d | 0.45±0.05 |
| F | 1.6±0.2 |
Electric Performance
| No. | Items | Test Method and Condition | Criteria |
| 1 | Standard Charge | Charge to 2.8V at constant current 0.5C,then constant voltage charge to taper current 0.05C | Constant voltage 2.8V for 2.0hours in all at 25±2℃. |
| 2 | Capacity | Measure the capacity through standard | 3 mAh[±20%] |
| 3 | Cycle Life | Charge:Standard charge model Discharge:Standard discharge model Repeat the procedures below2000cycles | Residual capacity ≥80%after 2000 cycles vs.Discharge capacity of first cycle |
| 4 | Impedance | charge model and standard discharge model | ≤1000mohm |
| 5 | Battery Voltage | Measure OCV by multimeter | 2.2~2.8 V |
| 6 | Temperature Performance of Battery | Charge:Standard charge model Discharge:Discharge to1.8V at 0.2C/1cConstant current at -20℃ and 100℃ respectively | 100℃,Capacity ≥90% |
Core Specifications
This cell has a typical capacity of 3mAh with ±20% tolerance. Nominal voltage is 2.4V. Internal impedance is ≤1200mΩ measured at AC 1kHz after standard charge. Charge cut-off voltage is 2.8V. Discharge cut-off voltage is 1.5V. Standard charge and discharge current is 3mA (1C). Maximum charge and discharge current is 30mA (10C). Operating temperature range is -20°C to +100°C. Storage temperature range is -20°C to +70°C.
Physical Dimensions
Diameter ΦD is 3.9±0.1mm. Length L1 is 12.0±0.5mm. Lead length L2 is 17.5±1.0mm and L3 is 14±1.0mm. Lead diameter Φd is 0.45±0.05mm. Lead pitch F is 1.6±0.2mm. The cell has a cylindrical pin type form factor.
Cycle Life
Under standard test conditions, the cell retains ≥80% of initial capacity after 2,000 cycles. This makes it suitable for applications with regular charge/discharge cycles over several years of service.
Temperature Performance
At -20°C, the cell delivers reduced capacity for low-temperature applications. At 100°C, capacity retention is ≥90% of initial value. High temperature storage at 70°C for 28 days results in retention capacity >50% and recovery capacity >80%.
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