I bought a GL502VS last year and after a few months, the laptop had a very bad battery problem. The battery was discharging even while plugged in a wall. The problem was caused by the GTX 1070 draining too much power during intense gaming sesssions. After a few weeks of waiting for a solution, they said it was a design flaw that could not be fixed. Replacing the power supply for something bigger didn't work. Apperently the board was making some kind of bottleneck on the power. The battery was getting less power than what the video card was draining. Asus asked to send my laptop back and they sent me a refund for the full amount of the laptop.... I hope they fixed that issue if they are still selling that exact same model. I hope this help someone who is looking to buy one of them.