3mos lithium battery is current and power.
The lithium battery protection board is to protect the charging and discharging of the series lithium battery when it is fully charged, it can ensure that the difference of voltage between each battery is lower than that set; value (generally ±20mV), enabling equal charging of each battery cell, effectively improving the charging effect in series charging mode.
Substrate characteristics:
Open circuit voltage test: measure whether the MOS tube can open normally after charging the voltage.
Load Voltage Test: Measure the load capacity of the protection board to reflect the DC impedance of the protection.
VCC voltage measurement (if the chip operating voltage is normal).
Measuring the working frequency of the chip (oscillation frequencychip working crystal ator).
On-state resistance measurement (MOS and FUSE tube resistance measurement).
Resistance identification: IDR measurement.
In lithium battery testing, C is used to represent the ratio of the battery's charging and discharging current, i.e. rate. Charging and discharging rate = charging and discharging current/rated capacity. For example, for a 1200 mAh battery, 0.2 C represents 240 mA (rate of 0.2 for 1200 mAh) and 1 C represents 1200 mA (rate of 1 for 1200 mAh). 3C lithium battery testing requires the use of battery test modules, such as shrapnel micro-needle modules, which can transmit large currents well, with a maximum current of 50A, stable connection and no attenuation. current, which is beneficial for 3C lithium batteries. Testing is complete. effectively.