With the BL1041B battery, you can use multiple tools with a single battery thanks to the uniform adapter system. This means they are always ready for immediate use. From the cordless drill to the cordless hedge trimmer and even the job site radio, you can operate all your Makita devices in the 12.0 V power class with this 12.0 V lithium-ion battery. The advantage is that you do not need to purchase a separate battery for each device; instead, you can use this one battery for any additional device in this power class. This saves you money and space. Follow the manufacturer's guidelines for use, and you will enjoy your Makita battery and high-quality tools for a long time: Always remove the battery from the tool when assembling parts, making adjustments, cleaning, or if it will not be used for an extended period. Do not leave the battery in a dormant state for too long: it is recommended to use the battery at least once a month. Store the battery in a clean, dry, and cool place, away from heat and metal objects, if you will not be using it for an extended period.