When you want to use dthe goods ,pls  charge it 5-6 hours of electricity, and after using   1 hour,it is better to charge again, which is good for battery lifetime, it is  Speed 40000 RPM, it is different from the same kind of the other charging machine, motor is goods, , power can last long

2. This product is durable and high stability, even if they don't charge, can also be the traditional operation even the adapter.