Actually ive not its original charger . I charged it with 2 3 chargers but it gives me poor battery time . Then i bought original charger of hp with 3amp . It gives me 3 hours continuous usage with remaining 56% battery . Then i slept and when i woke up its standby consuming battery with wifi on is 16% which means it was on 40% . I want to ask that if it is normal ??