Power Tool Battery Replacement: Market driven by aftermarket replacements. 

Even with the best care, all rechargeable batteries eventually lose their ability to hold a charge and must be replaced. Power tool battery replacement is a common part of owning cordless tools. The cost of a replacement battery can vary widely depending on the brand, voltage, and capacity. Higher voltage and higher-capacity batteries, such as those used for heavy-duty applications, are naturally more expensive.

When replacing a battery, it's important to choose a replacement that is compatible with the tool and the charger. While some third-party batteries are available, it is often recommended to stick with the original equipment manufacturer's (OEM) batteries to ensure optimal performance, safety, and compatibility. As manufacturers continue to improve battery technology, they are also making an effort to create a consistent battery platform across their product lines, which can make replacement and upgrading more convenient for consumers.