What are the factors that affect the capacity and price of 18650 lithium-ion battery packs? Posted by benzoenergy.com
The 18650 lithium-ion battery capacity is distributed between 1000mAh and 3000mAh. Due to the particularly hot market, the price of today's 18650 lithium-ion batteries is extremely chaotic. The capacity of the 18650 lithium-ion battery pack is of concern to many industrial users and consumers, because the larger the capacity of the 18650 lithium-ion battery, the longer the usage time and the longer the power supply can be supplied to the user.
What are the important factors that affect the capacity of 18650 lithium-ion batteries?
The
battery capacity is affected by the degree of aging. We all know that
when the capacity decays to a limit value, the battery is eliminated. It
can be seen that there is an absolute correlation between the two.
Secondly, the capacity is also affected by temperature. At low
temperatures, the activity of the active material decreases, and the
amount of ions that can be supplied decreases, and the capacity will
inevitably decrease.
The capacity of 18650 lithium-ion batteries
is an important selling point for manufacturers. In addition, the brand
of 18650 lithium-ion batteries with the same capacity is also a factor
that affects the price. Generally speaking, imported brands are more
expensive than domestic brands of the same type. The important factor
that determines the capacity of 18650 lithium-ion battery is the
structure of raw materials. The price of lithium cobalt oxide, lithium
manganate and ternary materials, and lithium iron phosphate will be
different.
Because of the
dominant use of capacity for price, the capacity of 18650 lithium-ion
battery packs on the market will have a false standard. For example, the
capacity of 18650 lithium-ion battery with a capacity of 2200mAh is
marked as 2600mAh, which is deceiving consumers. Compliance is often
caused by artificial nutrients, so users should identify qualified
manufacturers.
In
addition to the aging and decay of the lithium-ion battery itself, there
is a more common and important factor, that is, the different
self-discharge rates, resulting in an imbalance in the power of the
series-connected cells, which ultimately leads to a reduction in the
capacity of the lithium-ion battery. Not durable.
What are the factors that affect the price of 18650 lithium-ion batteries?
1. 18650 Li-ion battery capacity
We
understand that capacity is the hotspot of lithium-ion batteries that
most novice users are most concerned about. Usually, the higher the
capacity, the more expensive the price. At present, the most stable
battery capacity range of the entire 18650 lithium-ion battery market is
roughly 2200-3000mah, and the highest capacity can actually be about
3200mah. Therefore, when you buy 18650 cylindrical lithium-ion batteries
in your daily life, you must choose one that suits your power supply
needs, not blindly chasing high-capacity lithium-ion batteries.
2. Lithium-ion battery internal resistance
At
present, there are not many household devices for the detection of
battery capacity and internal resistance, and most ordinary households
do not have so much time to pay attention to the real parameters of
lithium-ion batteries. However, for the purchasers engaged in the
lithium battery procurement business, understanding the range of
internal resistance helps to obtain the final price of lithium-ion
batteries more accurately. Usually, the larger the internal resistance,
the smaller the capacity is. For those application environments with
high power requirements, the resistance value is relatively small, and
the price is naturally relatively high. So another price factor of the
battery is its resistance.
3. Battery case
I
believe that most of the time, the battery case is not sensitive to
most battery purchasers, but we have to say that the quality of the case
directly affects the final quality stability of the battery. So whether
the shell is excellent also affects its price.
4. Explosion-proof design
Since
the vast majority of 18650 lithium-ion battery packs are designed with
steel shells, there is obviously the possibility of accidents in this
type of battery, so the explosion-proof design can effectively curb the
occurrence of such accidents and even tragedies. Therefore, whether
there is an explosion-proof design is another reason that affects the
price of lithium-ion batteries.
5. Intelligent battery management system
We
understand that most of the time, lithium-ion batteries mostly use IC
circuits to control their various overcharge, overcurrent, and various
protections, but with the continuous improvement of modern technology,
high-quality lithium-ion batteries are fully capable of designing a set
of suitable intelligent battery management system. The design of this
intelligent battery management system is also another critical factor
affecting the price of lithium-ion batteries.
The
price of lithium-ion batteries is mainly composed of three parts:
cells, protective plates, and shells. At the same time, due to the power
consumption and current of the electrical appliances, the material
selection of the connecting pieces between the cells will affect the
cost. Different connectors may also have a greater impact on cost, and
different PACK processes will also affect cost.
The
above are the important factors that affect the capacity and price of
the 18650 lithium-ion battery pack. The length of time the lithium-ion
battery is used depends on the capacity of the lithium-ion battery.
powerful.
BENZO Energy Technology Co.,Ltd
UFine Technology Co., Ltd
Site: www.bz-battery.com / www.benzoenergy.com
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