Practical Solar Panel Charge Controller Auto Battery Charge Regulators Used For Car Battery Chargings Camping Solar Controller

Features:
The two-way voltage output of solar energy is divided into 18V or 9V or 12V or 6V by shifting gears.
When closed, the solar chargers is about the size of a wallet.
This portable design is perfect for outdoor activities like hiking or biking.
You can place the panel in the sun and use it to directly charge your device.
Highly efficient solar cells convert up to 23-24%
Solar panels can be used for surface mounting.
Easy to install.