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Home> Articles>News>FAQ Of Battery — Best High Voltage 12.8v Secondary Lifepo4 Battery Pack

FAQ Of Battery — Best High Voltage 12.8v Secondary Lifepo4 Battery Pack

From:CTECHI GROUP Limited     Release time:2019-02-19

Overview:What are primary and secondary batteries? Primary batteries are ordinary dry batteries, which can only be used once. Secondary batteries are also called rechargeable batteries. Power battery (or traction battery) in secondary battery is the main power supply of electric vehicle at present.

1. What are primary and secondary batteries?

Primary batteries are ordinary dry batteries, which can only be used once. Secondary batteries are also called rechargeable batteries. Power battery (or traction battery) in secondary battery is the main power supply of electric vehicle at present.


2. What's the difference between primary and secondary batteries?

The internal electrochemistry of the battery determines whether the battery is rechargeable or not. According to their electrochemical composition and the structure of the electrode, the reaction between the internal structure of the real rechargeable battery is reversible. In theory, this reversibility is not affected by the number of cycles. Since charging and discharging will cause reversible changes in the size and structure of the electrodes, the internal design of the rechargeable battery must support this change. Since the primary battery only discharges once, its internal structure is much simpler and does not need to support this change. Therefore, it is not possible to charge the primary battery. This method is dangerous and uneconomical. If you need to use it repeatedly, you should choose rechargeable batteries whose cycle times are about 350 times. This kind of batteries can also be called secondary batteries or storage batteries.


Another obvious difference is that their energy and load capacity, and self-discharge rate, secondary battery energy is much higher than primary battery, but their load capacity is relatively small.

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3. How does the rechargeable battery realize its energy conversion?

Each battery has the ability of electrochemical conversion, that is, the stored chemical energy is directly converted into electrical energy. In terms of secondary batteries (also known as storage batteries), in the process of discharge, chemical energy is converted into electrical energy, and in the process of charging, electrical energy is converted into chemical energy. According to the different electrochemical systems, this process can be charged and discharged more than 500 times.


4. What are the characteristics of batteries for electric bicycles?

Electric bicycle batteries are power batteries. Their characteristics are that they can discharge large currents in a certain period of time, run for motor vehicles, and maintain a certain period of time to run for a certain mileage.


Vehicle power batteries and fixed batteries, such as instrument batteries, electric power, communication system batteries, starting batteries, are different in structure and performance, and their charging and discharging modes are also different, so they can not be used in general.


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