When it comes to cordless drills, voltage ratings ranging from 4 to 8 volts are perfect for light-duty tasks. For most users, drills within the 12 to 18-volt range will meet their work needs effectively. If you're tackling heavier projects, opt for a high-power model. Keep in mind, higher voltage means a bigger and heavier battery. It's important to recharge the cordless drill battery periodically. Additionally, choosing tools from the same brand and voltage allows for battery sharing, maximizing convenience and versatility. Upgrade to a higher voltage tool to unleash more power and handle tougher materials and larger screws with ease.