3.65V.
According to the query on Sohu.com, the full voltage of lithium iron phosphate battery cell is 3.65V and the Discharge end voltage is 2.0V in order to protect the service life of. the battery cell, the battery manufacturer defines that the termination voltage will be higher than 2.0V. Due to the characteristics of the battery chemical material itself, the energy density of lithium iron batteries is lower than that of lithium polymer batteries, but the safety performance is higher and the price is lower.
Pacific Automotive Network does not have a unified standard. After all, there are still some differences in the production and manufacturing processes of each manufacturer. Of course, the voltage drop of a good battery cell is very slow once it is fully charged. The voltage drop of most lithium iron phosphate cells whenwhen fully charged is approximately 3.3 to 3.5. If the voltage drops and remains at 3.5, it is indeed an A+ quality battery cell.
Generally, the working voltage of lithium batteries is 3.7V and the termination voltage is 3.2V; The operating voltage of lithium iron phosphate batteries is 3.26 V and the termination voltage is 2.5 V. The voltage to which a lithium iron battery is fully charged is called "termination charge voltage" in the industry. According to battery industry standards, this voltage is approximately 1.2 times the rated voltage value. For example, for a 3.6 V cell phone battery, the charge termination voltage is 4.2-4.3 V.
The working principle of discharge termination voltage lithium iron batteries: the rated voltage of a single lithium iron battery is generally designed to be 3.7V and the voltage dhe termination is 2.75 V. There are two situations. encourage manufacturers to increase the upper limit of the termination voltage to 3.0V.
First, the electrochemical properties determined by the lithium battery material, which are often considered from the perspective of 'safer use of the battery;
The second is the relationship with specific electrical products and connected to the electrical environment. Of course, there is also the opposite situation. The termination voltage can be designed to be lower, for example 2.5 V and 2.4 V, but it is not lower than 2.4 V.
If the operating temperature during discharge is between -20 and 60°C, a lithium battery with a termination voltage of 2.75V can actually continue to discharge, but it should not be lower than 2.5V., as mentioned before, the loss between 2.75 V and 2.5 V can be partial, and belowus of 2.5 V, it will cause the most serious damage, rendering the battery unusable.
The lithium iron battery also has a termination voltage. This lithium battery is sometimes called core lithium battery. The discharge termination voltage of core lithium battery should not be less than 2.75 × n. Cell battery most commonly used in laptops Let's take lithium batteries as an example. This 6 cell lithium battery often uses a combination of 3 series and 2 parallel. Therefore, the discharge cut-off voltage of this lithium battery is 2.75V × 3.=8.25V. In practice, the minimum cannot be less than 2.5V×3=7.5V.
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