✔✔ We Use High Quality Level A Cell to Make Batteties(Caustion:Do Not Over Charge or Over Discharge,If you have any questione when use,you can contact me at once.)
✔✔ USB Charge Cable With Short Circuit Protection, Overload protection, Overvoltage protection,0 Volt activation
✔✔ Customer Service: If Any technical support needed or question about our products.Please feel free to contact us, we will reply in 24 Hours