Built-in battery: Built-in battery supports 1000 times opening and closing. This car phone holder wireless charger and say goodbye to the embarrassment of not being able to take out your phone after ignition. can be opened and closed normally without plugging in 1 month Efficient Car Charger: 15W wireless car charger with built-in smart chip that automatically identifies the charging power of your phone to improve charging. Like other Qi-enabled phones, the standard charging power up to 15W is compatible with most phones with wireless charging capabilities. Note: Samsung Galaxy z flip/z fold iPhone 12/13 mini is not supported High temperature suction cup: The wireless car charger mount base is equipped with the strongest suction cup and professional 3M glue (high temperature resistance) in the whole network. After many tests, heavy duty suction cups can withstand more than 30 pounds. You don't have to worry about it overturning through speed bumps or field tests. A good phone