[KingDani]

sorry if it's a double post , but as far as i have read , nobody mentioned this behaviour:
after upgrading , i seem to have been encountering an old problem with increased frequency : after a seemingly full charge , which is over 3 hours with the battery icon on device shows fully charged state , i disconnect , mind you , i don't do anything , it's my macbook that feeds the device , so i just disconnect it( i never answer that question on DR , that says do you want the device to be used as a storage of something to that effect ) . and i happen to not be able to use the device for a couple of days ( uber busy , i know ) and then , bam , there is not an iota of energy in the DR , not even to boot. it takes 10 minutes in charge , just to turn the red light into green , essentially enabling the DR to boot.
any suggestions?
i am sick of it , i might as well use some sort of charger , i just am worried , any unofficial wall charger might hurt the battery.
cheers