I have an Asus laptop and it has been a year with me. It's original charger wasn;t working anymore so i borrowed my friend's Asus laptop charger to charge my laptop. It wasn't used for almost 3 weeks. But when i used the borrowed charger, it says 0% available (plugged in, charging). Tho exceeds that point, like it was 20% charged after how many minutes of charging, when I unplugged the charger, the device turns off. Is it because i'm not using the original charger or a possibility that the batteries are dead? Any help/advice is appreciated!