I. Distinguishing by voltage
Lithium batteries typically have a voltage between 3.7V and 3.8V. Based on voltage, lithium batteries can be divided into low-voltage and high-voltage types. Low-voltage lithium batteries generally have a rated voltage below 3.6V, while high-voltage lithium batteries generally have a rated voltage above 3.6V. Testing with a lithium battery meter shows that the voltage range of low-voltage lithium batteries is 2.5V to 4.2V, while the voltage range of high-voltage lithium batteries is 2.5V to 4.35V. This voltage difference is one of the important distinguishing features between the two.
II. Differentiating by charging method
Charging method is also one of the important distinguishing features between low-voltage and high-voltage lithium batteries. Typically, low-voltage lithium batteries use constant current/constant voltage charging, while high-voltage lithium batteries use a degree of constant current/constant voltage charging to ensure higher charging efficiency.
III. Usage Scenarios
High-voltage lithium batteries are suitable for applications where battery capacity, size, and weight are critical, such as smartphones, tablets, and laptops; low-voltage lithium batteries are suitable for applications where size and weight are less critical, such as power tools.
At the same time, the following precautions should be taken when using lithium batteries:
1. During use, a dedicated charger should be used, and attention should be paid to the charging voltage and current parameters;
2. Do not forcibly short-circuit the lithium battery, as this may damage the battery and cause safety issues;
3. Do not randomly select and mix batteries; instead, choose batteries with the same specifications for combination.
4. When not in use, lithium batteries should be stored in a cool, dry place.
