So, there is some chemical reaction in one direction and if its a rechargeable battery there is a chemical reaction the opposite direction so, but there is chemicals there are chemicals there that that store the energy and we understand that you know there is a delta h associated with the reaction and from that you can get some information about the you know kind of energy that is there in the reaction, and then from there you can get the you know delta g and as well as the open circuit voltage for that reaction, standard electrochemical potential for the electrodes all of that we can do
तर, एका दिशेने काही रासायनिक प्रतिक्रिया असते आणि जर ती रिचार्जेबल बॅटरी (rechargeable battery) असेल तर रासायनिक प्रतिक्रिया ही उलट दिशेने आहे, परंतु असे रसायन आहेत जे तिथे ऊर्जा साठवतात आणि आम्ही समजतो की आपल्याला माहित आहे की तेथे डेल्टा हा आहे.