Battery Capacity/ Discharge Tester| Detailed introduction of technical principles

The core principle of a battery charge/discharge tester is to use the control device as a controllable load or power source to perform programmable constant current/constant power discharge and charging of the battery pack, while simultaneously executing precise measurements. Finally, the actual battery capacity is accurately calculated using the "ampere-hour integration method."

Discharge Test: The device discharges the battery pack at a set current/power. An internal high-precision ADC simultaneously measures and records the voltage, current, and time throughout the discharge process. Discharge stops when the voltage drops to a preset cutoff point. The ampere-hour integration method is the core of capacity calculation; it integrates the discharge current-time curve to obtain the measured discharge capacity.

Charging Test: The device switches to intelligent charging mode and charges the battery according to a preset curve.

Evaluation: By comparing the measured capacity with the battery's rated capacity, the battery's health status can be accurately assessed. This process typically includes simultaneous measurement of the battery's internal resistance, providing a comprehensive diagnosis of battery performance. Battery Capacity/Discharge Tester, Battery Capacity Tester

Lithium Battery Charge/Discharge Test DC 220V, Charging 40A, Discharging 50A
Load Capacity Battery Tester. This instrument can act as a discharge load when the battery is offline, achieving constant current discharge at a set value through continuous adjustment of the discharge current.

During discharge, the instrument will automatically stop discharging when the battery pack terminal voltage, or the individual cell voltage drops to the set lower limit, or the set discharge time is reached, or the set discharge capacity is reached,

and record all valuable, continuous, real-time process data.

Product Features:
1. DC220V Voltage Charge/Discharge Function: A single unit can meet the charge/discharge testing requirements of battery packs at DC220V.

2. Uses high-precision resistors to avoid red-hot phenomena, making the entire discharge process safer.

3. The individual cell monitoring module uses long-distance radio frequency wireless communication for voltage data transmission and can set up to 4 independent frequency bands,

meaning that up to 4 monitoring systems can transmit data simultaneously in the same area without mutual interference or channel misalignment.

4. The wireless data acquisition box can monitor each battery cell, enabling complete monitoring of the battery pack's discharge process, and features three data acquisition methods:

5. Data transmission between the individual cell monitoring module and the charge/discharge device host.

6. Data transmission between the individual cell monitoring module and the USB wireless terminal.

7. Data transmission between the individual cell monitoring module, the charge/discharge device host, and the USB wireless terminal.

8. Each charge/discharge device can monitor 25 individual cell acquisition boxes, each capable of connecting 12 batteries, for a total of 300 batteries.

The device can automatically filter out the highest and lowest 6 battery cell numbers and voltage values, displaying them in different colors on the screen (optional).

9. Individual cell voltage values can be viewed in two ways: a sliding table display and a sliding bar chart display (optional).

10. The equipped PC software can analyze the recorded total voltage, discharge current, and individual battery cell voltage data,

and generate corresponding data reports. 11. The device features intuitive curves, graphs, and reports that visually represent the battery pack's performance, and can be printed and queried.

12. The device itself has a USB interface, allowing data from the discharge process to be saved to a USB flash drive and then imported to a PC.

The PC data management software analyzes the battery discharge process and generates corresponding data reports, making data transfer more convenient.

13. It uses an intelligent single-chip ARM controller, a 7-inch 1024*600 high-definition LCD screen, resistive touch operation, and a built-in Chinese/English menu for simple and clear operation.

14. It features automatic protection shutdown functions, including over-temperature protection, over-voltage protection, over-current protection, and reverse connection protection. When any alarm occurs, the corresponding alarm message will be displayed on the screen. Over-voltage protection and reverse connection protection automatically disconnect the air circuit breaker.

The device also features automatic protection shutdown functions, including over-temperature protection, over-voltage protection, over-current protection, and reverse connection protection. 14. Settable charging/discharging termination conditions, including low individual battery voltage, low/high overall battery voltage, low charging current, and completion of charging/discharging time.

When any of these conditions is met, the device will automatically stop the test with an audible beep and automatically record the reason for the stop.

15. Enables online compensated charging/discharging. By connecting an external current clamp sensor, discharge testing of batteries in online operation can be performed, greatly simplifying the testing process. This function is particularly suitable for applications with only a single backup battery (optional).

1. Applicable Battery: DC 220V

2. Charging Voltage: DC 10-300V

3. Discharging Voltage: DC 10-300V

4. Charging Current: 0-40A

5. Discharging Current: 0-50A

6. Operating Modes: Standalone Mode, Parallel Master Mode, Parallel Slave Mode, Remote Controlled Mode

7. Protection Features: Battery test voltage overvoltage protection, undervoltage shutdown, overcurrent protection, reverse connection protection, 65℃ overtemperature protection, LCD display, buzzer alarm

8. Individual Cell Voltage Acquisition (Optional): Employs a multi-band RF wireless module; communication distance up to 100 meters; compatible with 2V, 4V, 6V, and 12V individual battery voltage monitoring; 1-25 groups of RF wireless monitoring modules; can monitor up to 300 batteries. A single wireless monitoring module can monitor 12 individual battery cells.

9. Control accuracy: Discharge current ≤ ±1% (FS); Group terminal voltage ≤ ±0.5% (FS); Individual cell voltage: ≤ ±0.1% (FS)