Often you will need an external battery/charge controller.
There is some loss of efficiency but in full sun you can run the laptop virtually unheeded.
I don't think it unrealistic to spend around 700 or so, possibly more depending on how you set your system.
Use.8W, 32W or two of either to charge the power center.The larger lead acid power centers we cell may be heavier but they can be built and are available in a number of much larger capacity sizes.Newpowa 50 Watt 50W 12V Solar Panel Charge Controller Regulator RV Marine Kit.86, buy It Now, free Shipping 208 watching 98 sold.Things you will need: Supplies: Solar panels, charge controller, battery charger 2 AWG cable, at least one 12 Volt marine deep cycle battery.They also are very compact.Most laptops have a battery charge monitor.
Goalzero Boulder15.00 5 bids The boulder15 has a lightweight durable aluminum frame easy to install and uninstall, for easy placement to fit your convenience, so that its angle is able get the perfect amount of the Sun's energy.
Most won't work well with a laptop because of voltage incompatibility.
The embedded charge controller keeps the batteries in full health and keeps the system healthy.
If weight is an issue, one perhaps.
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