I connected two batteries in parallel to increase their capacity

[@walves1359]

They are plugged in parallel right now try them in series it will be better plug the negative from the second on the positive of the first and use the positive of the second battery with the negative of the first to power your object

[@FWS99channel]

if connected in series the voltage will increase, while the voltage I need is only 3.7 volts sir. I only need the capacity, thank you for the instructions sir