Using the Makita 193158-3 battery is easy. Just insert it into your compatible device and you're good to go. When charging, make sure to use the appropriate charger to avoid any issues. It's important to note that while this battery has minimal memory effect, it's still a good idea to fully discharge it every few uses for optimal performance. To keep it in top shape, store it in a cool, dry place when not in use. Also, avoid exposing it to extreme temperatures, as this can affect its lifespan. If you notice any signs of damage, such as swelling or leakage, stop using the battery immediately and replace it.