![]() Similarly, while charging a battery each cell will be charged up from the last voltage reading, it is rested on.įor example, if a 4S pack battery is put into use it will draw more current and the props will also spin at an increased rate. It is very crucial for the user to make sure that the Lithium Polymer batteries are well balanced which means that each cell hooked up in the series is at the same volt of around 3.7 Volts. ![]() A lot of balancers are available in the markets, however, it is both economic and efficient to buy a charger that has an in-built balancer and LiPo compatible chargers boast of that feature. This contributes in optimum performance of the battery. And once the battery reaches its peak voltage, the voltage will be maintained at that rate and the quantum of current will be reduced slowly and steadily.Īlso, Lithium Polymer Battery compatible chargers have a special feature of balancing, that is, not only they charge the battery to its peak, rather they maintain a balance in between the voltage of each cell that has been connected to the series. Here’s what it looks like, basically as you connect the battery to the charger, initially it will maintain a constant charge rate until the battery reaches its voltage. LiPo batteries use the concept of Constant Current/Constant Voltage (CC/CV) for charging. ![]() As explained before, these batteries require special care and attention to prevent any mishap from occurring. It is of paramount importance that LiPo compatible chargers are only used for charging such batteries. Internal Resistance is an equally important measure of the battery’s efficiency and must be taken into consideration before taking the final decision of buying the battery. However, that doesn’t reduce its importance. This is because Internal Resistance doesn’t stay constant and it changes over the life of the battery and other factors like temperature also have a bearing on it. An important point to note here is that, unlike the above 3, Internal Resistance is not printed on the battery. Therefore, needless to say, a high internal resistance is not good for any battery because, it shows that the energy produced by the battery doesn’t reach its required destination, rather it is lost in terms of heat. Higher the internal resistance higher is the energy lost in terms of heat. What is Internal ResistanceĪs the name suggests, Internal Resistance is the difficulty faced by the battery in discharging its energy due to its own internal factors. A 2200mAh battery at full charge can provide a current of 2200 milliamps for one hour before it becomes fully discharged. The second number, on the other hand, refers to the battery’s capacity in milliamp-hours (mAh). Since each cell has 3.7 volts (or 4.2 volts when fully-charged), the battery has a total pack voltage of 14.8 volts or 16.8 volts. ![]() The “4S” means it has four cells in a series. This implies that 3S Battery Pack will have a voltage of 11.1V 4S Battery Pack will have a voltage of 14.8V and so on. These are nothing but simple terms to understand the combination i.e., 2S refers to 2 cells in a series 3S refers to 3 cells in a series 4S refers to 4 cells in a series and so on. In our day to day lives, we often come across terms like ‘2S Battery Pack’, ‘3S Battery Pack’, ‘4S Battery Pack’ etc. It works on a simple concept that the voltage gets added up as in the voltage of each cell installed in the series will be added up to determine the total voltage of the battery. Now, if the appliance requires a battery of 7.4V, two LiPo cells will be required in a series. One normal LiPo battery has a nominal voltage (resting voltage of a battery pack) of 3.7V. Higher the voltage more is the speed and vice-versa. ![]() So, in simple terms, voltage determines how fast the appliance is going to run. Including all the Arduino products you need and a free PDF tutorial (over 30 lessons) for show you how to use themįor advanced users, such as professional laboratory engineers, large electronic students and experienced enthusiasts, they can use this kit to perform various types of tests and experiments with so many sensors available.Before getting into the voltage of the Lithium Polymer Battery, we should know what voltage is? Great value starter kit with 39 types of Arduino productsĪll modules come soldered for easy connection More than 100 components, which is the most complete Arduino starter kit you will find. ![]()
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