 HomeCompany NewsHow to test the capacity of battery via E-load

How to test the capacity of battery via E-load

2022-01-04

ll kinds of batteries could be seen in daily life. Different battery has its own capacity. Even though the same kind of battery also has different discharge current,which make it have different output capacity.

Battery contains several parameters such as battery standard voltage, battery capacity, and maximum output power and so on. Most people may concentrate on battery capacity. Under specific condition (discharge rate, temperature, end voltage), power released by battery is the capacity of battery. It is normally measured as ampere-hour.

APM E-load especially provides three discharge modes for battery discharge test: constant current, constant resistance, constant power mode. Through setting end voltage and end time, E-load could correctly stop loading to avoid battery damage caused by over discharge.

Test procedure is as below:
1. Connection before test
Connect the positive and negative terminal of battery and E-lad. Under the circumstances of high current, there will be voltage drop in cable. Current measurement value in E-load will be lower which may cause effect to measurement. To eliminate this phenomenon, it is available to use remote compensation to eliminate voltage

2. Please set the shutdown condition

When testing battery in batter mode, it is necessary to set a shutdown discharge condition. APM E-load has below 4 shutdown test condition: End voltage, overtime, end watt hour and end ampere-hour. When satisfy one of four conditions, battery discharge test will shutdown.

Normal test is focus on parameter setting of end voltage, end watt hour, end ampere-hour and overtime. Besides, APM measurement function includes measuring discharging capacity(WH.AH)and discharging time.

APM Programmable E-load consider demand from different test field, We think rigorously in design only to bring customer more intimate service, looking forward to your experience.

Previous: Test Challenges for Third Generation Semiconductor Devices

Next: In Order to Complete the IEC61000 Electromagnetic Compatibility Test, How Many Waveforms Have You Set?