BATTERIES | EPISODE 1

 𝐖𝐡𝐚𝐭 𝐢𝐬 𝐚 𝐛𝐚𝐭𝐭𝐞𝐫𝐲?

Battery is a device which stores energy in a form of chemical energy. It mainly consists of a cathode, anode and electrolyte. Electro-chemical reaction causes current in a conductor which is connected to the anode and cathode. 𝐁𝐚𝐭𝐭𝐞𝐫𝐲 𝐚𝐧𝐝 𝐚 𝐂𝐞𝐥𝐥 Even though term battery and cell are used interchangeably, Cell is a single power generating unit which is converting chemical energy to electrical energy. Hence is the fundamental electrochemical unit in a battery. Battery is a set of cells which is connected either in series or parallel in a circuit. 𝐒𝐩𝐞𝐜𝐢𝐚𝐥 𝐭𝐞𝐫𝐦𝐬 𝐫𝐞𝐥𝐚𝐭𝐞𝐝 𝐭𝐨 𝐛𝐚𝐭𝐭𝐞𝐫𝐢𝐞𝐬 1. 𝘊𝘩𝘢𝘳𝘨𝘦/𝘉𝘢𝘵𝘵𝘦𝘳𝘺 𝘊𝘢𝘱𝘢𝘤𝘪𝘵𝘺: Charge capacity refers to the measure of charge stored in the battery. It represents the maximum amount of energy that can be extracted from the battery under specific conditions. Ampere hours (Ah) is the unit of the battery capacity. Ex: 1 Ah simply means that we can draw 1 A of current for 1 hour, or 0.1 A for 10 hours, or 0.01 A (10mA) for 100 hours. 2. 𝘗𝘰𝘸𝘦𝘳 𝘊𝘢𝘱𝘢𝘤𝘪𝘵𝘺: Power capacity of a battery is the measure of energy stored in the battery. It is mostly expressed in Watt hours (Wh). A Watt hour is the multiplication of the Voltage(V) battery provides, current in amps(A) and amount of time in hours (h). Volt*Amps*hours = Wh Voltage of a battery/cell is often fixed because of the internal chemistry. Therefore, voltage and ampere hour rating are printed separately on a battery/cell. We can find power capacity simply by multiply voltage into ampere hour rating. Ex: If we have a battery with nominal voltage of 3V and 1 Amp-hour, therefore battery has 3Wh of power capacity. 3. 𝘌𝘯𝘦𝘳𝘨𝘺 𝘋𝘦𝘯𝘴𝘪𝘵𝘺 𝘢𝘯𝘥 𝘗𝘰𝘸𝘦𝘳 𝘋𝘦𝘯𝘴𝘪𝘵𝘺: Energy density refers to the measure of energy a battery contains per its weight. It is represented as Watt-hours per kilogram (Wh/kg). Power density is the measure of how quickly the energy can be delivered or charged. Stay Tuned📢 Next Article on Classification of batteries😃 #innovation #STEM #article