The constant-power discharge performance of lithium-ion battery cells is another feature to focus on. Because this determines the ability of the battery system to stabilize the output power, which in turn affects the vehicle performance of the EV. The following table is the main test steps for the constant power discharge test of battery cells at different temperatures and different powers. The ba...

Power characteristics are an important performance indicator of EVs, as well as an important indicator of EV battery cells. HPPC test, short for Hybrid Pulse Power Characterization Test, refers to the test of discharging and feedback (charging) pulses within the range of current and voltage available to the battery to characterize the dynamic power capability of the battery. The main purpose of th...

The residual capacity loss of the battery, also known as the charge retention, is also known as the self-discharge rate. When the battery is in the open circuit state, due to the internal spontaneous reaction, it will cause a certain loss of chemical energy, that is, self-discharge, resulting in a residual capacity loss of the battery. For a specific battery, the battery charge retention is mainly...

The electrical performance test of EV batteries mainly includes capacity and energy test, power and internal resistance test, energy efficiency test, start-up test, self-discharge test, charging test, cycle life test, etc. EV battery capacity and energy testing focuses on the available capacity and energy of EV battery systems under different conditions. The main influences on the capacity and ene...

EV battery power and internal resistance testing is mainly to test the available power and DC internal resistance of the battery system under different temperature environments. The relevant test standards are ISO 12405 and FreedomCAR. 1.Overview of testing under ISO 12405 ISO 12405 specifies that the power test and DC internal resistance test should be conducted at normal temperature, high temper...

The EV battery system start-up capability testing is mainly to verify the EV battery system start-up output power at low temperature and low SOC. The brief method of EV battery system start-up capability testing is as follows: perform a constant voltage discharge with a maximum current limit based on the maximum pulse discharge current specified by the battery cell manufacturer and collect the vol...

WinAck Group, as a professional battery charge discharge test equipment manufacturer, has several series of battery test systems ranging from small single cells to big battery packs.  Among them, RJ-series regenerative battery test system is a popular and advanced battery pack cycler with high testing accuracy, rich charging and discharging modes, independent control of each channel, support ...

How to Check Power Bank Capacity? This is a question. In order to accurately measure the actual capacity of the power bank, we need to use a professional power bank capacity tester. Figure 1. Power Bank Capacity Tester The process steps for power bank testing are as follows: Step 1: Connect the power bank to the charging port and discharge port of the power bank checker. Step 2: Open the professio...