How To Use A Capacitor As A Battery. In particular a capacitor has a lower energy density and charges and discharges more quickly. It is possible to purchase them cheaper because of the quantity but not for 1200 The energy stored in this set of capacitors is.

In particular a capacitor has a lower energy density and charges and discharges more quickly. A battery deals with storing tons of energy while capacitors deliver it at high power when needed. Can be discharged gradually similar to batteries.
So if you need only a short burst of energy you can reduce the size of battery required by using a capacitor.
Summing up in the use case Ive described ten years of system life from a coin cell its generally impractical to get a pulse boost of Vdd from a capacitor across the battery. A battery is an electronic device that converts chemical energy into electrical energy to provide a static electrical charge for power. The need for a capacitor is to ensure current flow in the absence or failure of a battery though super capacitors are a different story and hard to source as well. I thought I had to run positive to positive and negative to negative between both batteries one under the hood and one in the trunk but now I am hearing that you just wire the positive back to the second battery and ground the negative.

