The WS24 battery starter set includes a high-quality lithium-ion battery with 18 V and a matching charger. The integrated cooling system ensures fast charging and improved performance during the charging process. The battery is compatible with 14.4 V and Makita tools and chargers. The battery charge level indicator displays the current charge status of the battery. Optionally, a customizable melody can sound after the charging process is complete to signal the end of charging. This set is ideal for professional use in workshops and on construction sites. WS24 batteries and chargers can also be used with Makita batteries and chargers. However, the respective manufacturers recommend using their own chargers and batteries to ensure optimal functionality.