Please note that either 3.7V or 1.2V Ni MH battery, and is not a full battery voltage at. Fo lithium to
Say, after full voltage up to 4.2V, I believe most people has a mobile phone battery charger, you can see,
Generally above the output voltage is 4.2V. And full of nickel metal hydride can reach about 1.5V.
In addition to the voltage, then the capacity and discharge rate. The battery capacity to MAH (MAH) as a unit, the discharge rate of C for
Company。 In C number, simply say. 1C is different for different capacity batteries. 1C refers to the battery discharge with 1C can be
Work for 1 hours. Cases: 1500mah battery capacity continued working for 1 hours, then the average current is 1500mA, 1.5A, 1.5A is
The 1C. of the battery if the above nominal 10C. the maximum discharge current is 1.5A*10=15A. That is to say this
The battery is safe to use under 15A.
Another example of the 1000mah content of 1C is 1000mA, that is 1A. If the above nominal 15C. the largest discharge current is
1A*15=15A, the maximum current is 15A. battery but the batteries with 15A, 10C discharge,
Theoretically maximum current operation using 60/10=6 minutes. 1000mah to 15A, 15C to discharge theory
This current can be used for 60/15=4 minutes. So relatively speaking, 1500mah, 10C battery to use for a long time.
So buy a battery to see the number of C is not enough. C small discharge cells may be larger than the C number of large discharge. With the
Capacity dependent.
2017年3月17日星期五
FORMULA FOR CALCULATING THE SERVICE TIME OF MODEL BATTERY
[10:02:37] Tony.Huang: on relationship between discharge rate and current and continuous use of time on discharge rate and current time of use and the relationship between the current capacity of = (MAH) * rate (c)
The persistent current use time (minutes) at =[1/ (C)]*60*80% (high current battery discharge rate is about 80%)
For example:
2300mAh battery *15C continuous discharge =34.5A approximate time constant current discharging use are: (1/15) *60*0.8=3.2 minutes
2300mAh battery *26C continuous discharge =60A approximate time constant current discharging use are: (1/26) *60*0.8=1.85 minutes
4600mAh battery *15C continuous discharge =69A approximate time constant current discharging use are: (1/15) *60*0.8=3.2 minutes other rate and the capacity of the battery and so on
The persistent current use time (minutes) at =[1/ (C)]*60*80% (high current battery discharge rate is about 80%)
For example:
2300mAh battery *15C continuous discharge =34.5A approximate time constant current discharging use are: (1/15) *60*0.8=3.2 minutes
2300mAh battery *26C continuous discharge =60A approximate time constant current discharging use are: (1/26) *60*0.8=1.85 minutes
4600mAh battery *15C continuous discharge =69A approximate time constant current discharging use are: (1/15) *60*0.8=3.2 minutes other rate and the capacity of the battery and so on
THE CORRECT USE OF MODEL LITHIUM BATTERY
If we want to be able to effectively extend battery usage time, in addition to the charger have quality assurance, the correct charge is also essential, because of the poor quality of the charger or the wrong charging method will affect the battery usage time and cycle life of.1, battery factory, manufacturers have been activated, and the pre charge, so the battery has power more than a friend said, according to the adjustment period of battery charging time, standby battery is still a serious shortage of assumptions for genuine battery, this case should extend the period of adjustment of 3-5 complete charge and discharge. `2, if the new cell phone is a lithium-ion battery, then the first 3-5 charging is generally referred to as the adjustment period, should be charged for more than 14 hours, in order to ensure full activation of lithium ion activity. Lithium ion battery has no memory effect, but has a strong Sui, should be given full activation, in order to ensure the future use of the best performance can be achieved. 3, some automatic intelligent fast charger when the indicator signal light, only full of 90%. The charger will automatically change the battery with slow charge. It is best to use the battery is full, otherwise it will shorten the time of use. 4, before charging, lithium batteriesdo not need special discharge, improper discharge will damage the battery. `5, charging as far as possible to slow charge, reduce the fast charge mode; time not more than 24 hours. 6, the battery after three to five full charge and discharge cycle of the internal chemical substances will be activated to achieve the best results. 7, please use the original or better reputation of the brand charger, lithium battery to use lithium battery charger, and follow the instructions, otherwise it will damage the battery, or even dangerous. 8, many users do not know there is no attention or do not understand, often when charging the mobile phone open, it will be very easy to hurt the life of the mobile phone, because in the process of charging circuit board, the mobile phone will be fever, at this time if there are foreign phone, may produce instant return current, damage on the internal parts of mobile phone. 9, the battery life depends on the number of repeated charging and discharging, so should try to avoid the battery when charging, this will shorten the battery life. When the phone is off time for more than 7 days, the mobile phone battery should be fully discharged, and then use the electricity. 10, the mobile phone batteries are self discharge, no time when the nickel metal hydride battery will be about 1% of the remaining capacity of the discharge, the lithium battery will be based on the daily discharge of 0.2 ~ 0.3%. 11, in charge of the battery, as far as possible the use of special socket, do not connect the charger and TV and other household appliances socket. 12, although our mobile phone in the network coverage area, but in the phone off the charge, our phone has been unable to accept and call. At this point, we can use the mobile phone does not pass transfer function will be transferred to the mobile phone, fixed phone side, to prevent the loss of calls, this method for the mobile phone is not in the network coverage area or weak signal is unavailable when applicable. 13, do not expose the battery in hot or cold, like the dog, should not put the mobile phone in the car, under a scorching sun; or get air-conditioned room, where on the air blowing straight. When charging, the battery has a little heat is normal, but it can not withstand high temperature "suffering". In order to avoid this situation, it is best to charge at room temperature, and do not cover anything on the machine. 14, nickel cadmium (NiCd) battery must be charged before the battery is fully charged, rechargeable battery must be sufficient to ensure that electricity. 15, if the mobile phone battery placed too long time without the use of mobile phone, the best to apply to the maintenance department as a battery activation treatment, may also use a DC manostat, adjusting the voltage of 5-6V, current 500-600mA reverse connect battery. Note that a touch that is open, up to three times, you can, after such treatment, and then use the original charger to adjust the charging period. 16, the time is not the longer the better, when the battery is not protected after the battery should be charged, or the battery will be affected by heat or overheating. 17, lithium ion battery must use a dedicated charger, otherwise it may not reach saturation, affecting its performance. After charging is completed, should be placed on the charger for more than 12 hours, the battery should not be separated from the battery for a long time
MODEL BATTERY KNOWLEDGE
General knowledge of model aircraft batteries, charging and discharging related data (a) charging the highest voltage 4.20V this common sense that the majority of friends can know. 4.20V is always the highest voltage of lithium polymer batteries, but with the development and improvement of technology, the majority of manufacturers of lithium polymer batteries can safely reach 4.25V, and some top technology manufacturers can do 4.30V, 4.30V voltage is the high voltage current technology. Because our model with a polymer battery charger is basically a set voltage of 4.20V, so in accordance with the 4.20V charge on it. If it is in other ways to increase the maximum voltage (such as 4.35V), will cause irreversible damage to the battery, avoid.
Two) the minimum discharge voltage of 2.75V may have a lot of friends die would be surprised, because the 2.75V discharge minimum voltage will make them confused, a lot of new friends and even die into the battery businesses some brands will be considered to be 3.70V, this is a mistake. Each battery battery factory we Bayi are 4.20V to 2.75V the voltage phase of the test, you are in the hands of each group "81#" and "the Palestinian general" battery are the lowest voltage discharge test of 2.75V, whether it is from the theory of data within the framework of the battery, or from the discharge the measured battery speaking, are the lowest voltage of 2.75V. So please rest assured that the bold discharge to the 2.75V limit, so that the use will not affect the life of the battery. Here is a very important situation must be to the majority of the model friends, first let me tell you about the electric voltage of the approximate parameters. 2.75V = 0%; 3.56V = 5%; 3.70V = 10%; 3.75V=20% = 50%; 3.85V. The comparison between the voltage and the power we use "approximately" symbol, because there is no corresponding relationship between the absolute accuracy between them, just like 10000MAH's battery will never be just accurate to 10000MAH such as. Philosopher said that there are no two identical leaves in the world, I want to say is that the world can not find the same parameters of the core of the two, only the same parameters. Well, if not do high precision battery research and research data above can treat data as a standard. We can see from the above comparison between the battery voltage, when the voltage of the battery to 3.56V is only 5% of the electricity, the 5% power if mishandled, will soon reach or exceed the limit value of 0%, more than the limit value, the battery immediately flatulence. Assuming a model of the battery in the plane can fly 10 minutes, then the electricity can only support for up to 30 seconds, even if you only more than 5 seconds, it is bound to cause flatulence. Taking into account a lot of novice friends can not accurately grasp the value of this discharge, there will be a lot of model aircraft batteries recommended to the discharge of 3.70V to terminate the discharge voltage. In addition, the voltage value is above the voltage without load, and the load voltage is determined according to the discharge current. To learn more about the load voltage can be added Q group: 250438421. We have a large amount of data available to you.
Two) the minimum discharge voltage of 2.75V may have a lot of friends die would be surprised, because the 2.75V discharge minimum voltage will make them confused, a lot of new friends and even die into the battery businesses some brands will be considered to be 3.70V, this is a mistake. Each battery battery factory we Bayi are 4.20V to 2.75V the voltage phase of the test, you are in the hands of each group "81#" and "the Palestinian general" battery are the lowest voltage discharge test of 2.75V, whether it is from the theory of data within the framework of the battery, or from the discharge the measured battery speaking, are the lowest voltage of 2.75V. So please rest assured that the bold discharge to the 2.75V limit, so that the use will not affect the life of the battery. Here is a very important situation must be to the majority of the model friends, first let me tell you about the electric voltage of the approximate parameters. 2.75V = 0%; 3.56V = 5%; 3.70V = 10%; 3.75V=20% = 50%; 3.85V. The comparison between the voltage and the power we use "approximately" symbol, because there is no corresponding relationship between the absolute accuracy between them, just like 10000MAH's battery will never be just accurate to 10000MAH such as. Philosopher said that there are no two identical leaves in the world, I want to say is that the world can not find the same parameters of the core of the two, only the same parameters. Well, if not do high precision battery research and research data above can treat data as a standard. We can see from the above comparison between the battery voltage, when the voltage of the battery to 3.56V is only 5% of the electricity, the 5% power if mishandled, will soon reach or exceed the limit value of 0%, more than the limit value, the battery immediately flatulence. Assuming a model of the battery in the plane can fly 10 minutes, then the electricity can only support for up to 30 seconds, even if you only more than 5 seconds, it is bound to cause flatulence. Taking into account a lot of novice friends can not accurately grasp the value of this discharge, there will be a lot of model aircraft batteries recommended to the discharge of 3.70V to terminate the discharge voltage. In addition, the voltage value is above the voltage without load, and the load voltage is determined according to the discharge current. To learn more about the load voltage can be added Q group: 250438421. We have a large amount of data available to you.
MODEL BATTERY SELECTION
Model battery classification
There are many kinds of rechargeable batteries, but they are mainly used in the above models, such as large energy density, light weight and large discharge current. Low internal resistance of rechargeable batteries, when used to guard against short circuit, or may cause burns, fire.
Nickel cadmium battery (Ni-CD) is the main feature of excellent high current discharge performance, to meet the requirements of high power short time model. One of the most important performance indexes of the rechargeablebattery is discharge rate. The so-called discharge rate refers to the ratio of the maximum continuous discharge current of the battery to its nominal capacity current (C). C represents a current with a small discharge or a nominal capacity of 1C. Usually a numeric representation is added before the capacity C. For example, some 1800 Ma battery discharge rate of 10 C, which means that the maximum continuous discharge power of 18A, visible discharge rate is an important indicator of the performance of the battery discharge. Due to the differences in the production process and structure, the discharge rate of different brands of batteries is often different. Domestic nickel battery is generally 6C~12C, imported batteries are usually a little higher, especially the model aircraft dedicated power batteries, often up to 20C or so, even more than 40 C high SANYO battery. The first choice is to choose a high battery battery.
But the nickel cadmium battery energy density is small, and has the memory effect, the waste battery pollution to the environment is quite big, will soon be eliminated, at present only uses in the big current output the occasion. NiMH rechargeable battery (Ni-MH) is a kind of environmental protection, the use of performance and charging as well as nickel cadmium battery, the nominal voltage is 1.25 volts, but higher power density, has on many occasions to replace the nickel cadmium battery, only in the large current discharge performance aspect is not NiCd batteries in general 7C about. Nickel chromium batteries and nickel metal hydride batteries have the same series of models, commonly used mainly F type, D type, C type, SC type, A type, AA type (No. 5), AAA (7) type, etc.. Button, square, chewing gum, in addition to a number of special types of batteries, they are usually derived from the standard battery model specifications of the lengthened or shortened models. The battery monomer (battery core) is sometimes directly marked by the battery size, such as 18650, 1848, which is marked with a diameter of 18 mm, a length of 65 mm and a single cell of 8 mm. Models in the motor and the receiver are to use power supply, their voltage is generally more than 5 volts, the power group is generally more than 9~12 volts, which requires more than a series of batteries in general, with nickel spot welding connection. Amateur can use copper soldering, but attention should be paid to short welding time, avoid the battery damaged.
Lithium ion polymer battery (Li-Poly) is the future development direction of rechargeable batteries. It has been widely used in handheld electronic products such as mobile phones. Lithium ion polymer monomer voltage up to 3.6 volts, energy density, light weight, no memory effect. But the lithium ion battery charging and discharging requirements are relatively high, it is difficult to achieve high current discharge, generally around 3C, otherwise it is easy to damage the battery. However, the discharge capacity of the lithium ion polymer battery for the model aircraft is up to 10C, and the safety of the lithium ion polymer battery is not a problem.
Package type lithium ion polymer battery is very large, mostly flat cuboid, and a protection circuit for each battery, the discharge voltage is lower than a certain time or the discharge current is higher than a certain time will be a lot of automatic protection, battery protection circuit with charging protection function. Lithium ion polymer battery using a plastic soft packing in the structure, a lithium ion battery from early liquid batteries (Li-ion) of the metal shell, in case of safety hazards, liquid explosive batteries, and polymer batteries will only tympania.
There are many kinds of rechargeable batteries, but they are mainly used in the above models, such as large energy density, light weight and large discharge current. Low internal resistance of rechargeable batteries, when used to guard against short circuit, or may cause burns, fire.
Nickel cadmium battery (Ni-CD) is the main feature of excellent high current discharge performance, to meet the requirements of high power short time model. One of the most important performance indexes of the rechargeablebattery is discharge rate. The so-called discharge rate refers to the ratio of the maximum continuous discharge current of the battery to its nominal capacity current (C). C represents a current with a small discharge or a nominal capacity of 1C. Usually a numeric representation is added before the capacity C. For example, some 1800 Ma battery discharge rate of 10 C, which means that the maximum continuous discharge power of 18A, visible discharge rate is an important indicator of the performance of the battery discharge. Due to the differences in the production process and structure, the discharge rate of different brands of batteries is often different. Domestic nickel battery is generally 6C~12C, imported batteries are usually a little higher, especially the model aircraft dedicated power batteries, often up to 20C or so, even more than 40 C high SANYO battery. The first choice is to choose a high battery battery.
But the nickel cadmium battery energy density is small, and has the memory effect, the waste battery pollution to the environment is quite big, will soon be eliminated, at present only uses in the big current output the occasion. NiMH rechargeable battery (Ni-MH) is a kind of environmental protection, the use of performance and charging as well as nickel cadmium battery, the nominal voltage is 1.25 volts, but higher power density, has on many occasions to replace the nickel cadmium battery, only in the large current discharge performance aspect is not NiCd batteries in general 7C about. Nickel chromium batteries and nickel metal hydride batteries have the same series of models, commonly used mainly F type, D type, C type, SC type, A type, AA type (No. 5), AAA (7) type, etc.. Button, square, chewing gum, in addition to a number of special types of batteries, they are usually derived from the standard battery model specifications of the lengthened or shortened models. The battery monomer (battery core) is sometimes directly marked by the battery size, such as 18650, 1848, which is marked with a diameter of 18 mm, a length of 65 mm and a single cell of 8 mm. Models in the motor and the receiver are to use power supply, their voltage is generally more than 5 volts, the power group is generally more than 9~12 volts, which requires more than a series of batteries in general, with nickel spot welding connection. Amateur can use copper soldering, but attention should be paid to short welding time, avoid the battery damaged.
Lithium ion polymer battery (Li-Poly) is the future development direction of rechargeable batteries. It has been widely used in handheld electronic products such as mobile phones. Lithium ion polymer monomer voltage up to 3.6 volts, energy density, light weight, no memory effect. But the lithium ion battery charging and discharging requirements are relatively high, it is difficult to achieve high current discharge, generally around 3C, otherwise it is easy to damage the battery. However, the discharge capacity of the lithium ion polymer battery for the model aircraft is up to 10C, and the safety of the lithium ion polymer battery is not a problem.
Package type lithium ion polymer battery is very large, mostly flat cuboid, and a protection circuit for each battery, the discharge voltage is lower than a certain time or the discharge current is higher than a certain time will be a lot of automatic protection, battery protection circuit with charging protection function. Lithium ion polymer battery using a plastic soft packing in the structure, a lithium ion battery from early liquid batteries (Li-ion) of the metal shell, in case of safety hazards, liquid explosive batteries, and polymer batteries will only tympania.
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