If you replace your laptop battery with one that has a higher voltage than the original battery, it can have several potential consequences, none of which are desirable:
Compatibility Issues: Laptop batteries are designed to operate at specific voltage levels as specified by the manufacturer. Using a battery with a higher voltage may lead to compatibility issues with the laptop's power management system. The laptop may not recognize the battery, or it may not charge properly, leading to unpredictable behavior or limited functionality.
Hardware Damage: The laptop's internal components, such as the motherboard and other circuitry, are designed to handle a specific voltage range. If you introduce a battery with a higher voltage, it can potentially damage these components. Excessive voltage can cause overheating, electrical shorts, or even permanent damage to the laptop's hardware.
Reduced Battery Life: Even if the laptop functions with a higher voltage battery, it may lead to significantly reduced battery life. The laptop's power management system is calibrated to work optimally with the specified battery voltage. Deviating from this voltage can result in incorrect readings of battery capacity, leading to inaccurate battery level indicators or unexpected shutdowns when the battery is actually depleted.
Safety Hazards: Using a battery with a higher voltage than the laptop's specifications can pose safety risks. Higher voltages can increase the potential for overheating, electrical fires, or even explosions. It is crucial to adhere to the manufacturer's recommendations to ensure the safety of both yourself and your device.