For those who doubt whether the capacity of the lithium battery corresponds to the rated value, you can make a preliminary judgment by following the following steps:
1. Use a suitable charger to fully charge the battery.
2. Use a load (such as a light bulb or resistor) connected to the positive and negative terminals of the battery to drain power from the battery.
3. Record charging usage time and monitor battery voltage changes.
4. Based on the relationship between charging current and time, calculate the total charge quantity of the battery from full charge to empty charge, that is, capacity.
For example, assuming the charging current is 1A and the battery works for 20 hours under load, the capacity calculation formula is: Capacity (Ah) = Current (A) × Time (hours) = 1 A × 20 h. = 20Ah.
With this methode, you can first determine whether the battery capacity is close to the nominal value. If the measurement results differ significantly from the rated capacity, there may be a capacity problem. At this point, it is recommended to contact the battery manufacturer or supplier for solutions or more accurate testing.
It should be noted that this method can only provide an approximate capacity value and may be affected by factors such as testing environment, charging characteristics and battery condition . In order to obtain more accurate capacitance measurement results, you can use professional testing equipment or consult professionals.