I need software to help know the number cells present in my battery [closed]

Is there any software I can use to get a comprehensive information about my battery ie the number of cells because I read somewhere that the more cells the battery has the longer the charge lasts, I need to know the number of cells on mine so I upgrade to a battery with more cells to give me a duration of 8 hours and more.

You're thinking about it backwards. It's true that cars have more wheels than bikes. It's also true that cars can fit more people than bikes. But if you want to check if your family will fit in a vehicle, you shouldn't be counting the wheels.

Compare battery capacity. It's measured in mWh or Wh (1 Wh = 1000 mWh). The bigger capacity, the longer the battery will last.

It is not as simple as that.

First of all a battery built into a device is limited by space. So only this many cells can fit into the same space

Apart from that:

The number of cells in series determine the batteries voltage. The number of cells in parallel determine the batteries capacity and maximum output amperage.

For example a battery with 3 cells in series and 4 in parallel (3S4P), with 2000mAh capacity per cell, will have a voltage of 4,2V * 3 = 12,6V and a capacity of 2000mAh * 4 = 8000mAh = 8Ah

To visualize it, this circuit with 3 cells in series would have 36V 1A

While this circuit with 3 batteries in parallel would have 12V 3A

(image source: digikey)

You could theoretically change the number of cells in parallel, which in turn would result in a higher capacity pack, but you can't simply change the number of cells in series because; 1. The voltage would change and 2. you would need a different Battery Management System (BMS).

It might be better to get a second battery if it is user changeable, or get a notebook power bank. There are models with USB-C, some with adjustable DC output and a barrel connector and even some with a 110V/230V AC outlet.