* How long does it take to charge a laptop computer?
It actually depends on the weather condition. Under ideal condition. the max. output for this panel is 18V 4.0A.(18x4.0=72W )
However, based on the rule of power transmission,the current delivered to your laptop actually depends on the inside battery, most Lithium-ion battery has a limited input current requirement to prevent the battery from getting overheated or damaged. Your laptop's manual should have this information listed. If laptop accept 20V3A, then it only will delivered 20Vx3A=60W(Charging voltage x charging current). Not full 72W from panel will be pulled out.
Please check the capacity and current of your laptop first, for example.
Capacity of inside battery (Wh)/60W = Time to full battery. (Under full sun, at ideal condition.For capacity of your battery, please check label on your laptop's battery.)
* How do I know whether it works for my devices or not.
Actually our panel has USB5V and DC18V outing,so it will works for most USB-Powered devices and laptops in the market, that is also the main design purposes.
What is more, if in doubts,your device’s instruction manual should have the charging current and voltage listed. otherwise, we suggest you to contact your device’s manufacturer.
* Can you keep this device connected to a car battery for long periods of time like a trickle charger?
Yes, you can do this by pairing with an solar regulator,ALLPOWERS folding panel is featured with the unique 18V DC output so that it can charge for any 12V lead-acid batteries in most vehicles.
* Would this solar panel work on solar generator? are any cables needed?
Yes, it is perfect for charging solar generators in the market. But you may need to buy an external adapter to fit for the input socket of your generator.Our only offer DC 5525 to DC 5521 cable, 5525 end is for the controller from our panel.