Replacing a laptop battery can be a difficult decision, as there are both pros and cons to consider. For example, a hypothetical user may need to replace the battery on their Razer Blade 15 2018 laptop after it fails its durability test. On one hand, replacing the battery would be more expensive than buying an extended-life accessory and could also void any existing warranty. On the other hand, it could potentially increase the battery life of the laptop in comparison to using an accessory. Ultimately, users must weigh these two options carefully before deciding whether or not to replace their faulty laptop battery.