The Well M401 Toy Blaster is ready to use straight out of the box with a range of approx 20-30m and runs a high quality motor. Most important, when charging the batteries, we recommend charging them between 1-4 hours. When they are charging the light/s will flash and once it is fully charged, the light/s will turn a solid red or green. Once you start to hear the battery getting flat, please recharge it as running it flat can damage the cells.