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CNHL Lipo Batteries
CNHL aim at providing high-quality Li-Po batteries and RC products to all hobby enthusiasts with excellent customer services and competitive prices
Today, CNHL will introduce the working characteristics of the 4s 650mah lipo battery. The article will introduce the three aspects of the charging and discharging characteristics and temperature characteristics of the 4s 650mah lipo battery in detail. Interested partners will go and have a look.
Generally speaking, as the 4s 650mah lipo battery is charged, the voltage and capacity of the battery will rise.
In the initial charging process of the 4s 650mah lipo battery, both the power curve and the voltage curve rise rapidly. The maximum value of the voltage curve rise is about 4.3V. At this time, the voltage no longer rises because the internal resistance of the battery is at this time. Variety. During the whole process of charging, the power is always increasing, and the faster the voltage increases in the early stage, the faster the power increases. On the contrary, with the extension of time, the charging current decreases regularly, which is an exponential law.
When the actual charging is closer to the curve described in the figure, the charging speed is faster, and the higher charging efficiency can also be obtained. When the actual curve exceeds this curve, it is easy to cause damage to the battery.
The depth of discharge, working environment temperature, and internal temperature of the battery can affect the discharge characteristics of the 4s 650mah lipo battery, thereby causing its changes. In addition, factors such as discharge time can also affect the discharge characteristics of the 4s 650mah lipo battery. The discharge characteristics exhibited by the 4s 650mah lipo battery will vary with the discharge rate. The battery discharges a certain battery capacity within a specified time, and the current required at this time is defined as the discharge rate, that is, the [illustration] 4s 650mah lipo battery should not be discharged too much when discharging, because the larger the rate of the battery's charge and discharge capacity, the more the battery will be discharged. It is easy to heat up, and once the battery heats up a lot and damages the battery, it will cause permanent and irreversible damage to the battery. The battery voltage under the relative remaining capacity is inversely proportional to the discharge rate. When discharging at a rate of 20% of the rated capacity, although the voltage of the 4s 650mah lipo battery drops to 2.75V, it can still continue to release energy, but if it is discharged at a double rate , the most discharge capacity is only 98% of the rated capacity. 4s 650mah lipo battery under different charge and discharge rates, the characteristic curve of voltage changing with battery storage capacity is shown in the figure below.
The working performance of the 4s 650mah lipo battery is greatly affected by temperature, and the temperature change will have a relatively large impact on the charging and discharging of the battery. Generally speaking, the minimum temperature for normal operation of the 4s 650mah lipo battery is -30°C, and the maximum temperature is 60°C, so when using the 4s 650mah lipo battery to power the device, you should pay attention to the temperature used. To get the most efficient charging method, you should choose a reasonable temperature, because once the temperature is too high, the battery will release a lot of heat, and if the heat rises sharply, it is very easy to damage the battery, not only making the battery unable to work, but also easy in severe cases A fire occurs. In addition to affecting the normal operation of the battery, temperature also affects key parameters in the battery, such as internal resistance. The lower the ambient temperature of the 4s 650mah lipo battery, the greater the internal resistance of the battery. Due to the increase in the internal resistance of the battery, the power consumption of the battery is very fast, which will lead to the rapid consumption of the battery capacity.
Under normal working conditions at room temperature, the size of the capacity is proportional to the increase in temperature.
The above is the whole content of today. If you are interested in lithium batteries, you can read the following article: 1200mah lipo battry energy density improvement - cell density improvement
CNHL aim at providing high-quality Li-Po batteries and RC products to all hobby enthusiasts with excellent customer services and competitive prices
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