The reasons are as follows:
1. Selecting cells with different material systems will affect the price of the entire lithium-ion battery. According to the cathode material, lithium-ion batteries include lithium manganate (3.6V), lithium cobalt oxide (3.7V/3.8V), lithium nickel manganate- cobalt (commonly called ternary, 3.6 V) and lithium iron phosphate (3.2 V). ). ), lithium titanate (2.3V/2.4V) and other battery cores of various hardware systems.
Battery cells with different material systems have voltage platforms, safety factors, cycle counts, energy density ratios, operating temperatures, etc.
2. The price of battery cells from different brands will also vary greatly. The price difference of battery cells of the same hardware system but different brands will also be verys important, every brand of battery cell has it. been eliminated thanks to the survival of the fittest in the market. Quality (security, consistency, stability) is fundamentally proportional to price.
3. Ability. While there is no virtual standard for lithium-ion battery capacity, generally, the larger the battery capacity, the higher the price will be.
4. Protection board quality and circuit design. Good quality lithium-ion batteries use high-quality electronic components and protection boards, and also have multiple protection circuit designs. They not only improve charging and discharging circuits, but also have multiple designs such as constant temperature and constant voltage, overcharge, overcharge. -discharge, overcurrent, short circuit, etc. Create a safe environment for you and your device.
However, these batteriess low-cost lithium ion do not have perfect production technology, and their safety cannot be guaranteed. Therefore, when choosing, you should choose a lithium-ion battery manufacturer of reliable quality.
When there is no virtual standard for lithium-ion battery capacity, generally, the larger the battery capacity, the higher the price will be.
Early R&D
Lithium batteries were first used in pacemakers. Lithium batteries have the advantages of extremely low self-discharge rate and gentle discharge voltage, allowing pacemakers implanted in the human body to work for a long time without recharging. Lithium batteries typically have a voltage rating above 3.0 volts and are best suited for use as an integrated circuit power supply. Manganese dioxide batteries are widely usedused in calculators, digital cameras and watches.
In order to develop more efficient varieties, various materials were researched to create unprecedented products.
In 1992, Sony successfully developed lithium-ion batteries. Its practicality has significantly reduced the weight and volume of portable electronic devices such as cell phones, laptops and calculators.
Reference for the above content: Baidu Encyclopedia - Lithium Battery
Normal. According to relevant query information, the fully charged voltage of a 24V lithium battery is 28.8V. The rated voltage of each cell of a lead-acid battery is 2V, and the theoretical full-charge voltage is of 2.4 V. Exceeding this would damage the battery, so a battery with a nominal voltage of 24 V is equivalent to 28.8 V.