First of all, we need to understand the meaning of some special terms for the main battery rating indicators:
Rated voltage: The rated voltage of a lithium polymer battery is 3, 7V.
Voltage after charging: The cell voltage of the lithium polymer battery after being fully charged is 4.2V.
Rated capacity: mAh unit , indicating the battery storage capacity.
Continuous discharge multiple: unit C, indicating the maximum continuous discharge current of the battery.
Multiple instantaneous discharge: unit C, which indicates the maximum discharge current of the battery in a very short period of time (within 10 s). This indicator does not have a universal user guide.
How to get the battery specifications you need by calculating the indicators above?
1. Determine the operating voltage. Battery voltage after chargingrge < the maximum operating voltage of the electrical device. You can get the required higher voltage battery by connecting multiple batteries in series (final voltage = single battery voltage after charging x number of batteries).
2. Determine the maximum operating current. The maximum operating current of the electrical appliance < rated capacity of the battery x multiple of continuous discharge. If the continuous discharge multiple has been determined, it can be obtained by connecting several batteries in parallel (final rated capacity = single rated capacity). x number of batteries) Higher capacity battery packs are required.
3. If the voltage and capacity cannot be met, series and parallel connections can be used at the same time, but the number of batteries in parallel or series should not exceed 3.
(Note: batteries connected in parallel or series must haveir exactly the same rated capacity)
Next let's talk about how to use them correctly. From a battery protection perspective, we can activate the new battery before official use. Activation is a process of charging and discharging several times, for example 3-5 times. After each charge, the discharge on the electrical device does not exceed 70.% of the capacity. This process can make the battery voltage more stable! In fact, the battery has been activated before leaving the factory, and it is carried out in a professional charging and discharging cabinet. Our own activation is therefore mainly aimed at detecting possible quality problems in the battery earlier!
After activation we can use it normally. During use, please note that the maximum current of the electrical appliance cannot be higher than the maximum continuous discharge current of the battery, you should usea functional speed regulator (lithium polymer) with low voltage protection. The battery cell voltage cannot be lower than 3 V); the maximum temperature of the use environment should not be higher than 50-60 degrees Celsius for batteries that operate at high currents, the battery should be ventilated; and cooled.
If the battery swells, ruptures, leaks, etc. during use, you must stop using it immediately! If the above phenomenon occurs during charging, stop charging immediately!
The process of charging lithium batteries has very strict requirements. In order to protect normal batteries from any abnormality, a dedicated lithium battery charger should be used to charge the battery. Any form of charger dedicated to lithium batteries has the function of automatically stopping charging after charging, because if the battery already charged continues to be chargeeIt will appear that the battery will swell, rupture, leak, or even burn or explode! (We will discuss the specific specifications and functions of the charger separately.)
Finally, let's talk about battery storage.
If your lithium polymer battery is going to be out of service for a long time, like 1 month, 6 months or even longer! Reasonable handling will then ensure that your battery is not damaged during storage.
Pay attention to the following points:
1. Storage temperature should not exceed 20-25 degrees Celsius.
2. Charge the battery one last time before storage, check the voltage of each battery to make sure the battery voltage in the battery is basically the same (error +/-0.01V), then discharge to free about 50 to 60% power. Then save.
3. If it is out of service for more than a month, regularly check the voltage of eachbattery every month to ensure that the lowest voltage of the battery is not lower than 3V. If it is lower than 3V, go to point 2 of charging and discharging. process.
Taken from: http://www.joyrus.com/CN/Technica/LipoT1.htm
Summary: Electric model airplanes are model airplanes relatively common, and their battery is generally uses lithium batteries that need to be recharged in time when the energy is exhausted. A special charger is required to charge the model battery. Connect the charger to the power supply, connect the model battery, select the balanced charging option on the charger interface, set parameters such as current and voltage, and charge normally. Pay attention to current and voltage. Settings must not exceed specified parameters and reverse charging is not permitted. If the batteryIf the model is discharged, it must be charged in time, otherwise excessive discharge will cause charging failure and affect the service life. Let's learn what to do if the model battery is too low. 1. How to charge model aircraft batteries
The power types of model aircraft are divided into electric and oil. Electric is more commonly used in small and medium sized aircraft models. Its battery capacity directly affects the battery capacity. endurance of the model airplane. Battery power. It should be charged in time after use. So, how to charge the model airplane battery?
Most electric aircraft models on the market use lithium batteries. When charging, you need to prepare a power supply, B6 charger, connection cable and lithium battery for the aircraft model. The charging methodspecific nt is as follows:
1. Plug in the B6 charger connection cable, then turn on the power, then connect the model battery, plug in the balance head first, then the T plug.
2. After the connection is completed, press the left and right option keys to switch the interface to the “LiBobatt” interface, and press the Enter key to enter.
3. After entering the lithium battery charging function, there are several options: fast charging and balanced charging. It is generally recommended to choose the balanced charging mode, i.e. “libobalance”.
4. The arrow keys and the Enter key adjust the settings. The Enter key selects settings. Press and hold. Press the Enter key for 3 seconds, then press the Enter key to confirm charging.
5. While charging is in progress, adjust the direction keysto display the relevant settings. After charging is complete, press the stop button, unplug the power and store.
2. Precautions for charging the model battery
1 When charging the model battery, the charging current should not exceed the maximum charging current specified in the specifications (generally 0.5 ). ~1.0C or less), charging with a current higher than the recommended current may cause problems with battery charging and discharging performance, mechanical performance and safety, and may cause heat generation or leakage.
2. The charging voltage should not exceed the specified limit voltage, and direct charging is strictly prohibited, otherwise the battery core may be overcharged.
3. Model aircraft batteries should be charged within the ambient temperature range specified in the product specifications, sotherwise the battery will be easily damaged. When abnormal temperature on the battery surface is detected, charging should be stopped immediately.
4. When charging, be sure to connect the positive and negative poles of the battery correctly. Reverse charging is strictly prohibited, otherwise it may damage the model battery and even cause heat or leakage. , or fire.
3. What to do if the model battery is too discharged
The model battery should be charged in time when it is discharged. a greater impact on battery life and may also prevent the battery from recharging. If the model battery is over-discharged due to negligence, you can use the following methods to remedy it:
1. First, use an ordinary voltmeter to check the remaining voltage of battery. If the voltage is incorrect, a chargebalanced cannot be performed.
2. Set the model battery charger to charging mode, do not plug in the balance plug, set the current lower, and set the voltage higher than the remaining voltage.
3. Adjust the target voltage and current as the voltage increases (if it exceeds 11V, increase it to 23A, 4S)
4. Generally, when the voltage reaches 2-3V lower than the standard voltage, return to balanced charging, plug in the socket and charge in normal mode.