Anyone who plays through the machine knows that under the existing technology, the battery of the passing machine can last up to 10 minutes in flight. However, if the battery is not well protected, the battery will slowly lose capacity, resulting in a shorter and shorter time for full-charge flight. In general, lithium batteries used in cross-machines (ie, competitive drones ) are high magnification. So what is a high rate battery?
The full name of a lithium battery is a lithium polymer battery, generally referred to as a lithium battery or a lithium battery. The discharge capacity of a lithium battery is expressed in multiples (C), which means how much discharge current can be reached according to the nominal capacity of the battery. In the lithium battery for the model, the single-chip voltage 3.7 V is the rated voltage, 1S is 3.7V, and 3S is 11.1V. Take a 11.1V RC power battery as an example. The maximum discharge current of the battery is 20A (20C x battery capacity 1000MAH)
Low-rate battery discharge current is 1C (battery capacity), high-rate battery discharge current can reach 10C or more. 1000mAh 10C high-rate battery discharge current can reach 10A, and higher rate battery can reach 50-70C Of course, the higher the C number, the higher the battery price. Be careful not to exceed the discharge C number of the battery to discharge, otherwise the battery may be flatulent or burned. If the low-rate battery current is so large and directly scrapped or even exploded, the high-rate lithium battery is widely used in the fields of drones and model aircraft products.
When the lithium battery cell is overcharged to a voltage higher than 4.23V, it will start to have side effects. The higher the overcharge voltage, the higher the risk. This has requirements for the charger, some parallel charger overcharge protection function is not perfect, resulting in a single battery full to 4.2V has not been cut off charging, in addition, some chargers use a period of time, because the components are aging, it is easy to appear full Do not stop the problem, therefore, in order to prevent spontaneous combustion of the battery when charging the lithium battery, someone must look after it. When it is found that the charging time is too long or the surface temperature of the battery is high and flatulence, stop charging immediately, check if the charger appears. Failure, otherwise the battery is overcharged, it will affect the battery life, but directly explode and fire.
Large-capacity batteries recommend using the B6 parallel charger for fast charging and setting the charging voltage. Also remind everyone that when charging, be sure to charge according to the battery charge C number or lower C number, not exceed the specified charging current.
The lithium battery also has a lower voltage limit when it starts to discharge at a high rate. When the cell voltage is lower than 2.75V, some materials will start to be destroyed. Since the battery will self-discharge, the voltage will be lower for a longer period of time. Therefore, it is best not to put it at 2.75V before stopping. During the period from 3.0V to 2.75V for lithium batteries, the energy released is only about 3% of the battery capacity. Therefore, 3.0V is an ideal discharge cut-off protection voltage. The cut-off protection voltage of the remote control RC lithium battery during flight use shall not be lower than 3.0V, and the best alarm voltage is about 3.3.
If the voltage is low, the speed will decrease. If the control is not good, it will lead to over-discharge. If it is light, it will damage the battery, and if the voltage is too low, it will cause the bomber.
Some model friends have a battery because they have fewer batteries, so the battery is short-lived. The strategy is to fly as little as one minute and the life span is one more cycle. Would rather buy two more batteries, and don't fly the battery beyond the capacity limit every time. To make full use of the battery alarm, an alarm should land as soon as possible.
If the voltage of the remote control lithium battery is lower than 3.5V, it will be over-discharged, the lithium battery will expand, and the internal chemical liquid will crystallize. These crystals may pierce the internal structural layer and cause short circuit, and even make the lithium voltage become zero.
High-rate and low-rate lithium batteries, what is the difference between the two
The full name of a lithium battery is a lithium polymer battery, generally referred to as a lithium battery or a lithium battery. The discharge capacity of a lithium battery is expressed in multiples (C), which means how much discharge current can be reached according to the nominal capacity of the battery. In the lithium battery for the model, the single-chip voltage 3.7 V is the rated voltage, 1S is 3.7V, and 3S is 11.1V. Take a 11.1V RC power battery as an example. The maximum discharge current of the battery is 20A (20C x battery capacity 1000MAH)
Low-rate battery discharge current is 1C (battery capacity), high-rate battery discharge current can reach 10C or more. 1000mAh 10C high-rate battery discharge current can reach 10A, and higher rate battery can reach 50-70C Of course, the higher the C number, the higher the battery price. Be careful not to exceed the discharge C number of the battery to discharge, otherwise the battery may be flatulent or burned. If the low-rate battery current is so large and directly scrapped or even exploded, the high-rate lithium battery is widely used in the fields of drones and model aircraft products.
Do not overcharge the lithium battery
When the lithium battery cell is overcharged to a voltage higher than 4.23V, it will start to have side effects. The higher the overcharge voltage, the higher the risk. This has requirements for the charger, some parallel charger overcharge protection function is not perfect, resulting in a single battery full to 4.2V has not been cut off charging, in addition, some chargers use a period of time, because the components are aging, it is easy to appear full Do not stop the problem, therefore, in order to prevent spontaneous combustion of the battery when charging the lithium battery, someone must look after it. When it is found that the charging time is too long or the surface temperature of the battery is high and flatulence, stop charging immediately, check if the charger appears. Failure, otherwise the battery is overcharged, it will affect the battery life, but directly explode and fire.
Lithium battery can not be discharged
The lithium battery also has a lower voltage limit when it starts to discharge at a high rate. When the cell voltage is lower than 2.75V, some materials will start to be destroyed. Since the battery will self-discharge, the voltage will be lower for a longer period of time. Therefore, it is best not to put it at 2.75V before stopping. During the period from 3.0V to 2.75V for lithium batteries, the energy released is only about 3% of the battery capacity. Therefore, 3.0V is an ideal discharge cut-off protection voltage. The cut-off protection voltage of the remote control RC lithium battery during flight use shall not be lower than 3.0V, and the best alarm voltage is about 3.3.
If the voltage is low, the speed will decrease. If the control is not good, it will lead to over-discharge. If it is light, it will damage the battery, and if the voltage is too low, it will cause the bomber.
If the voltage of the remote control lithium battery is lower than 3.5V, it will be over-discharged, the lithium battery will expand, and the internal chemical liquid will crystallize. These crystals may pierce the internal structural layer and cause short circuit, and even make the lithium voltage become zero.
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