Combination kits include two or more cordless power tools for performing different tasks. They also include at least one battery to power the tools, a charger to replenish the battery, and a storage bag or case for holding the kit components. Kits eliminate the need to select tools separately, and they ensure compatibility between the tools, battery, and charger. They are commonly used to equip new team members with a set of cordless tools. Cordless tools run on batteries, so they are more portable than corded tools and allow use where access to a wired power source is unavailable. They use brand-specific batteries, which fit different tools from the same manufacturer that have the same voltage and use the same battery series.