LiFePO4 24V 15Ah Battery Pack for E-Bike
SC 4000mAh 24V Ni-MH Battery Pack
Standard charge current: 0.2C
Maximum charge current: 1C
standard discharge current: 1C
Maximum discharge current: 3C
Charging method: CC CV
Charging voltage: 29.4V
Discharge end voltage: 18V
Cycle lifespan: 1,500 to 3,000 times
Temperature charging: 0 to 40°C
Discharging range:-10 to 45°C
Storage: ≤1 month -10 to 40°C, ≤6 months 0 to 35°C
Appearance without scratch, distortion, contamination and leakage
Standard environment condition temperature: 23 ± 5°
CHumidity: 45 to 75% RH
Atmospheric pressure: 86 to 106k
PaCertificates: CE, RoHS
Packing and Delivery
Welcome to EnnoPro
1. What is the 24-hour self-discharge test?
The self-discharge test of a lithium battery is:
Generally, 24-hour self-discharge is used to quickly test the charge retention capability. The battery is discharged to 3.0V at 0.2C, constant current and constant voltage 1C is charged to 4.2V, and the off current is 10mA. After being left for 15 minutes, it is discharged to 1C at 1C. V measures its discharge capacity C1, and then charges the battery constant current constant voltage 1C to 4.2V, off current: 10mA, after 1 hour of hold, 1C capacity C2, C2/C1*100% should be greater than 99%.
2. What is the difference between the internal resistance of the charge state and the internal resistance of the discharge state?
The internal resistance of the charge state refers to the internal resistance when the battery is fully charged 100%; the internal resistance of the discharge state refers to the internal resistance after the battery is fully discharged.
Generally speaking, the internal resistance of the discharge state is not stable, and is too large, the internal resistance of the charge state is small, and the resistance value is relatively stable. In the use of the battery, only the internal resistance of the charge state has practical significance. In the later stage of the battery use, the internal resistance of the battery will increase to different degrees due to the depletion of the electrolyte and the decrease of the activity of the internal chemical substance.
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