Lithium battery parameter specifications

What are the performance parameters of a battery?

The performance parameters to be tested mainly include the internal resistance, capacity, open circuit voltage, time dependent self-discharge and temperature rise. The performance of a battery is highly dependent on the weakest cell and the life of the battery will be at par or less than the actual life span of the weakest cell. Easy to assemble

What voltage should a lithium ion battery be tested at?

Lithium Ion Battery Specifications AA Portable Power Corp. 2. 5V Unless otherwise specified, all tests stated in this document shall be performed at 23±2°C. 3. Performance and test conditions Standard charge: 0.5C=1650mA constant current (CC) charge to 3.65V, followed by 3.65V constant voltage (CV) charge until current taper to ≤0.01C。

What is the nominal voltage of lithium phosphate cells?

For lithium iron phosphate cells the nominal voltage is 3.6V and for ternary lithium & lithium manganate cells, it is 4.2V. Because of the use of graphite anodes, the voltage of lithium cells is dependent on the cathode materials.

What is the self-discharge rate of lithium ion cells?

Generally, the self-discharge rate doubles for every 10°C increase in cell temperature. The monthly self-discharge rate of lithium-ion cells is about 1 to 2% as compared to the monthly self-discharge rate of 10-15% for nickel-based cells. Long life Cycle and calendar life determine the value for money for a cell.

What variables are used to describe the present condition of a battery?

This section describes some of the variables used to describe the present condition of a battery. State of Charge (SOC)(%) – An expression of the present battery capacity as a percentage of maximum capacity. SOC is generally calculated using current integration to determine the change in battery capacity over time.

How many MV should a lithium ion cell have?

As most of the cells would fall under 5V range, upto 8 to 10V upper range, measurement capability (resolution of 0.1 mV) and internal resistance measurement range of upto 50-60 milliohms with resolution of 0.1mohm should be sufficient to take care of the entire range of cylindrical Lithium Ion cells.