The 18650 battery voltage is an important parameter of 18650 lithium battery

18650 battery voltage is one of the important parameters, master 18650 battery voltage basic knowledge, the science of 18650 battery charge and discharge and shelved protection plays an important role, this article through the explanation of the following parameters to build 18650 battery voltage system.

Usually, single section 18650 battery voltage parameters are as follows:

A, 18650, at the heart of the battery voltage is working voltage, also called nominal voltage, 3.7 V, the equivalent of three series of nickel cadmium or nickel metal hydride batteries, there are also some domestic battery manufacturers to design the working voltage of 3.6 V.

Second, charging voltage limit: this is the highest for 18650 battery voltage limits, 4.2 V, 18650 battery charging process is to 18650 battery voltage from 3.7 V to 4.2 V at work, the process of the end of the process, said the battery is full charge state.Is more than 4.2 V, overcharge, can cause damage to the battery.

Three, discharging termination voltage: 18650 should not be continue to discharge the battery voltage drop to the minimum operating voltage, 2.75 V, if the battery in the following termination voltage, is released, discharge will make 18650 battery electrode structure is damaged, irreversible reaction in the lithium ion, the serious influence 18650 battery life.

Due to overcharge, discharge of 18650 cells will produce serious damage, so the general 18650 battery has the circuit protection measures, the upper and lower limit is reached automatically stop cell injury process.

18650 battery can through series, parallel, series-parallel three ways of the battery pack.

After a, parallel18650 battery: capacity, voltage and single 18650 battery voltage is the same, with two capacity is 2200 mAh 18650 battery in parallel as an example, the voltage is 3.7 V, and the capacity of 4400 mmAh;

Second, after a series of 18650 battery: capacity, single 18650 battery voltage, with three of the series 18650 of the 2200 mAh battery as an example, the voltage of 11.1 V, capacity is 2200 mAh still;

Three, 18650 battery packs of series-parallel: series and parallel aggregation, such as three series of two and 18650 battery, for example, the voltage of 11.1 V, capacity is 4400 mah.

Above 11.1 V is in series and parallel after 18650 battery voltage, battery charge limit voltage and discharge termination voltage change with tandem circumstances and also, such as three series and two and three series of battery charge limit voltage of 12.6 V, and discharging termination voltage of 8.25 V.And related numerical parallel battery pack is still 4.2 V and 2.75 V.

Visible, battery combination caused the different changes of 18650 battery voltage, battery by 18650 single battery voltage and capacity of the new indicators, almost 18650 batteries used in more fields.

The page contains the contents of the machine translation.