40w inverter or outdoor power supply

40W solar panel is enough to recharge your small appliances like cell phones, portable Fans, and LED lights. So in short, you'll only be able to get 200 watts of total power output from your 40W solar panel so is that what you need? then it is enough for you.

Please check out the operating power of your devices before use 【3 Output Ports】The 40W camping solar panel has 3 distinct output ports: 1 DC output (18V/2.27A Max), 1 USB-C output, and 1 USB QC3.0. It can charge your phone, iPad, laptop, little refrigerator, camera, GPS, power bank, and other devices wherever you are

【Upgraded 3 Output Ports】The 40W foldable solar panel designed with 3 output ports of different type: 1* DC output (18V/2.27A Max), 1*USB-C Output, 1* USB QC3.0. Wherever you are, it can charge your phone, iPad, laptop, mini fridge, camera, GPS, power bank and other devices.

Under ideal sunlight conditions, a 12v 40W solar panel will produce 18 volts, 2.2 amps, and 40-watt voltage output will depend on the intensity of the sun so which means it will fluctuate a lot so does the current. So you'll need a charge controller or regulator to manage the flow of voltage so you can charge your 12v battery.

A 40-watt solar panel can charge any size 12v battery but it can only add 16 Amps to the battery bank in a whole day. 12v batteries come in different sizes so with the help of a charge controller you can store the DC power produced by the solar panels in the battery bank to later use Battery size for 40-watt solar panel?

The 40-watt solar panel can only add 16Ah to the battery bank, so if you're using a Lead-acid or AGM small 12v battery you'll need a 30Ah battery. But, I would recommend a 50Ah battery but for lithium-ion a 20Ah battery will be a best suit