Power your machine with a new tool battery. You can continue working without interruptions with a new or extra battery for your drill, sander, or other power tool. Do you use your tools daily? Replace the battery after 1 year, so the tool performs optimally. Check carefully which brand and voltage your tool supports before you purchase a separate battery. The voltage and brand of the battery must match that of your tool. A battery with a high amperage has a longer battery life, so you can work longer. These batteries are larger and heavier than a battery with a lower amperage.