SAVE $300: The Jackery Explorer 1500 Ultra portable power station is on sale at Amazon for $999, down from the standard price of $1,299. That's a 33% discount and the lowest price we've spotted at Amazon. $999 at Amazon $1,299 Save $300 Summer fun is on the horizon. If you're ready to spend the weekend at the campground or power up the projector for a backyard movie night, you might want to consider the convenience of a portable power station . You'll be able to keep everything powered up while living the good life off-grid. If that's appealing, check out this deal at Amazon. As of May 4, the Jackery Explorer 1500 Ultra portable power station is $999 at Amazon, marked down from Jackery's list price of $1,299. That works out to a savings of $300 from a 33% discount. It's also the lowest price we've spotted at Amazon on this new Jackery model. Batteries are not typically friends with water and dust. However, that's a contradiction to taking a portable power station on a camping adventure.…