1. Nominal voltage of the battery
The nominal voltage of the battery refers to the average voltage of the battery at work, this value shows the basic characteristics of the battery, because the material used in the battery and the internal structure of the battery is different, so the nominal voltage of different batteries is different, the following is the nominal voltage of common batteries on the market:
1.1 Lithium-ion battery
Lithium-ion batteries have a very wide range of applications in life, such as cell phone batteries and electric car batteries are generally applied to lithium-ion batteries. Generally speaking, the nominal voltage in the battery is higher for 3.6V or 3.7V.
1.2 Lead-acid battery
The nominal voltage of lead-acid batteries is lower than that of lithium-ion batteries, generally speaking, the nominal voltage of lead-acid batteries is 2V, lead-acid batteries can be used in electric forklifts and so on.
1.3 Nickel-metal hydride battery
Nickel-metal hydride batteries are far lower than the nominal voltage of lithium-ion batteries, generally speaking, the nominal voltage of nickel-metal hydride batteries in the 1.2V or so, nickel-metal hydride batteries can be used as a portable power supply, such as flashlights and portable music players and so on will be used in nickel-metal hydride batteries.
Of course, the nominal voltage of the battery is not certain, the nominal voltage of the battery will be affected by the temperature and other external conditions, for example, under normal circumstances, lithium-ion batteries work at higher temperatures will lead to the nominal voltage value of the battery rises, while at lower temperatures, the nominal voltage of the battery will fall, which you need to pay attention to.
Moreover, because the internal resistance of the battery will gradually increase with the use of time, which will lead to a decrease in the nominal voltage of the battery. Of course, the nominal voltage of the battery will not only be affected by the temperature and the use of time, such as the internal material of the battery will have an impact on the nominal voltage of the battery. It can be seen that the nominal voltage of the battery is not certain.
2. What are the benefits of knowing the nominal voltage of the battery for you?
2.1 Determine the state of the battery
Because the battery is used for a long time or the battery is damaged, these will lead to changes in the nominal voltage of the battery, you can judge the state of your battery through this change.
For example, suppose you through professional equipment to detect your lithium iron phosphate battery nominal voltage is far below or above the nominal voltage, which means that your lithium iron phosphate battery has been difficult to work properly, which reminds you need to replace your lithium iron phosphate battery, which can protect your life and property safety, you need to pay attention to.
2.2 Provide data reference for purchasing batteries
If you need to buy or replace the battery, then the nominal voltage is what you must consider, for example, suppose you need to buy a nominal voltage of 3.7V battery, then you should choose lithium-ion batteries, if you choose lead-acid batteries, it will lead to the battery can’t work properly and efficiently for you, so understand the nominal voltage of the battery for your selection of the battery provides data So knowing the nominal voltage of the battery can provide data for you to select the battery.
3. Difference between nominal voltage and actual voltage of battery
Nominal voltage and actual voltage although refers to the voltage, but in the concept there is a big difference, the nominal voltage emphasizes the average voltage of the battery in normal operation, which is not an accurate value, for example, assuming that a lithium-ion battery operating voltage in the 3.0V to 4.2V between, then the lithium-ion battery nominal voltage of 3.6V, while the actual voltage emphasizes the battery in normal operation, which is not an accurate value, for example, assuming that a lithium-ion battery operating voltage between 3.0V and 4.2V, then the nominal voltage of the lithium-ion battery 3.6V.
The actual voltage emphasizes the real-time voltage of the battery, which is an accurate value, because the temperature and other values of the battery work constantly changing all the time, so the actual voltage of the battery is also a constantly changing value, the nominal voltage of the battery and the actual voltage in the concept of the battery is very different, the two can not be confused.
4. How do you know the nominal voltage of your battery?
Generally, the manufacturer will mark the nominal voltage of the battery in the instruction manual of the battery when manufacturing the battery, so you can easily know the nominal voltage of your battery through the instruction manual of the battery.
Of course, if your battery instruction manual is lost, you can use the multimeter to determine the nominal voltage of your battery, you can first turn off the battery’s power supply, and then set the multimeter to DC mode, connect the red pen to the positive terminal of the battery, while the black pen is connected to the negative terminal of the battery, then you can read the nominal voltage of your battery. However, this process involves a lot of electrical expertise, you can ask a professional to measure the nominal voltage of your battery for you.
