To know voltage of lithium-ion battery

The lithium-ion battery voltage is one of important indicators to measure a lithium-ion battery’s discharge performance. It shows the electrical potential difference between lithium-ion battery’s anode and cathode under a certain condition. The unit of measurement is volt (V). The following nouns help us to know the lithium-ion battery voltage.

Nominal voltage, also known as the rated voltage, refers to the battery in the process of normal work of the voltage, the lithium battery nominal voltage is 3.7 V or 3.6 V commonly.

According to different lithium battery cathode material, the nominal voltage will be different. Cobalt acid lithium batteries Nominal voltage of 3.7 manganese acid lithium battery nominal voltage of 3.8V Lithium nickel manganese cobalt ternary material of 3.5 3.6 V lithium battery only nominal voltage, but with the formula of continuous improvement and perfect structure, the nominal voltage of 3.7 V lithium battery materials; lithium iron phosphate batteries, lowest nominal voltage 3.2 V, but this is a very good material of lithium battery safety, do not explode, loop performance is very good can be up to 2000 weeks.

Open circuit voltage, refers to the lithium battery in the condition of open circuit (non-work state), the potential difference between is negative. The state of the lithium battery is full open circuit voltage of 4.2 V, and the lithium battery manufacturers Delivery generally set as 3.6 ~ 3.9 V voltage.

After working voltage, refers to the lithium battery connected to the load circuit of electric current flows through the electric potential difference between when the battery is negative, also known as the discharge voltage. Lithium battery after connected to the load, as a result of the existence of ohm resistance and polarization potential, the working voltage is lower than the open circuit voltage of lithium-ion batteries.

Lithium battery charging voltage, when charging rechargeable batteries, lithium battery charger output on both ends of the battery voltage, 4.2 V. Everyone in choosing a lithium battery charger will pay attention to the output voltage of the charger. + constant voltage charging mode is constant current.

Lithium-ion battery is widely used due to its many advantages, and even replace NI-MH battery. Single section lithium-ion battery voltage is 3.6 V, it is 3 times of NI-MH battery.

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