Using this Bosch battery is easy. First, make sure your Bosch 18V Li - ion tool is turned off. Then, insert the battery into the tool until it clicks into place. When you're done using the tool, remove the battery and store it in a cool, dry place. As for charging, use a Bosch 18V Lithium - ion battery charger. Check the charge - status indicator on the battery to know when it needs charging. Remember, avoid exposing the battery to extreme temperatures, as it can affect its performance and lifespan. Also, don't overcharge the battery. If you notice any damage to the battery, like cracks or leaks, stop using it immediately and contact Bosch for assistance. Regularly clean the battery contacts with a dry cloth to keep a good connection with the tools.