1. Why there is no power?
Pls check if the battery is fully charged.
Pls check if you turn on the blue button under the cover.(You can contact our service to find the exact location of the blue button)
Pls check if you turn on the power on the handlebar.
2.How to maintain it?
Our electric motorcycle is durable, you do not need to oil it as it is electrical and does not have a chain. You just need to charge it and use it. 
If some parts are damaged, you can contact us for help, sending some small parts to you is cheap.
If you will not use it for a long time, please turn off the blue button to cut off the power to protect the battery. Better use it regularly.
3. Is there any spare parts?
If you order for more than 20 units, we can give you some spare parts for free.
If you want extra spare parts, you can contact our service for help.
4. How long should I replace the battery or other main parts?
For lead-acid battery, usually it can be used for more than 500 cycles. 
For lithium battery, usually it can be used for more than 2000 cycles.
If you feel the power is not enough than before, you can consider about replacing.
For the tire, it depends, but if you feel it is time to replace the tire, you can replace it. Do not replace it until it is worn too much.