Using your Bosch GWS18V-13CB14 angle grinder is easy. First, insert the CORE18V® 8 Ah High Power Battery into the grinder. Then, if you want to connect it to your device, install the connectivity module (sold separately) and use the Bosch Toolbox App to customize settings. When you're ready to start grinding, hold the grinder firmly with the Vibration Control side handle. Use the slide switch to turn it on; you can lock it on for longer - term use. Be careful when the wheel is in contact with the material. If the wheel gets stuck, the Electronic Clutch Control will shut off the tool to protect you. Also, make sure to keep the power supply stable to avoid accidental startups. After use, turn off the grinder using the switch, and the brake system will quickly stop the wheel. For maintenance, keep the grinder clean. Wipe it with a dry cloth after each use. Store it in the provided carrying bag to protect it from dust and damage. Charge the battery as needed, following the instructions for the 18V Fast Charger. Remember, the Bosch 18V cordless power tools and chargers have a five - year limited warranty, and the batteries have a three - year limited warranty. If you have any issues, visit https://rb - pt.io/PowerToolWarranty or call 1 - 877 - BOSCH99.