How to increase the power of torch battery four times?

Increasing the power of a torch battery four times is not a straightforward task, as the capacity and voltage of the battery are determined by its chemistry and design. However, there are a few things that you can do to increase the overall brightness and runtime of the torch, which may help to achieve a similar result:

Upgrade the battery: If your torch uses standard alkaline batteries, consider upgrading to lithium or nickel-metal hydride (NiMH) rechargeable batteries. These types of batteries have a higher energy density than alkaline batteries, which means that they can provide more power for a longer period of time.

Use high-quality batteries: Even within the same type of battery chemistry, there can be significant variations in quality between different brands and models. Choose a reputable brand of battery with a high capacity and discharge rate for optimal performance.

Use an LED bulb: LED bulbs are much more energy-efficient than traditional incandescent bulbs, which means that they require less power to produce the same amount of light. Consider upgrading to an LED bulb for a brighter and longer-lasting torch.

Clean the contacts: Over time, the contacts on the battery and in the torch can become corroded or dirty, which can reduce the efficiency of the battery. Clean the contacts regularly with a dry cloth to ensure good conductivity.

It is important to note that these methods may help to increase the overall brightness and runtime of the torch, but they will not necessarily quadruple the power of the battery. Additionally, it is important to use caution when modifying or upgrading any electronic device, and to follow all safety precautions and manufacturer guidelines.