Even if it were a 18 volt 15 watt panel made for 12 volt batteries is pretty close to useless.
Solar panel with 5 volt usb output.
The 100w solar panel designed with 4 output ports of different type:
No battery pack required, simply charge using your device's usb charging cable.
2* usb qc3.0 foldable & kickstand design:
Will deliver 7 to 17 watt hours per day depending on location and time of year.
Charge up anytime, anywhere with this unique portable battery with solar panel with 230v ac, 12v dc and 5v usb output.
In terms of power output, it is best to separate solar panels into two categories:
This 100w solar panel only weighs 8.8lb, and with a folded size of 20.6x14x2.4in, it’s ideal for camping or outdoor working and.
4 output ports for different usage:
15 watt is for cel phones and usb chargers which can take two days to just recharge a cell phone.
The power converter connects to the solar panel and reduces the voltage to a regulated 5 volt output suitable for powering and charging usb devices.
It has a usb port for charging.
This solar panel converts sunlight into electrical energy as 6 volt rechargeable battery solar charger.
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Trying to step a 15 watt panel up to even trickle charge a car battery is like trying to smell a fart a mile away in a hurricane up wind.
The grape solar gopower8 kit is a portable power solution that provides usb power when exposed to daylight.
5 watt, 6 volt solar panel with universal bracket mount v50 usb battery pack (12,800mah) ip67 asa enclosure with pole mount attachments
The solar powered usb power supply and charger consists of a solar panel, a power converter, a standard usb cable, a usb charging cable, and an apple charging adapter as shown in the first diagram.
Max.charging current is 1000ma,normal is 500ma.