1. prasanna moholkar's Avatar
    Hi everyone my Lumia 640 by official charger take around 4 hour to take charging and I take power bank of Intex pb 4k which takes 2 hours to full.
    Why it is so???
    Is it normal???
    Thanks in advance.
    02-10-2016 05:50 AM
  2. arjan wolthuis's Avatar
    I have this as well. My old 520 charger is better then my 640 charger
    02-10-2016 06:11 AM
  3. prasanna moholkar's Avatar
    I have this as well. My old 520 charger is better then my 640 charger
    But is it normal for phone with power bank so fast and by official charger so slow???
    02-10-2016 06:13 AM
  4. r2SN's Avatar
    Hi everyone my Lumia 640 by official charger take around 4 hour to take charging and I take power bank of Intex pb 4k which takes 2 hours to full.
    Why it is so???
    Is it normal???
    Thanks in advance.
    I'd I am not wrong the charger output is 750 mAh. The power bank output is higher. Check the output. Higher mAh output charges battery faster
    prasanna moholkar likes this.
    02-10-2016 07:06 AM
  5. ML10's Avatar
    I have this as well. My old 520 charger is better then my 640 charger
    Same!
    02-10-2016 07:12 AM
  6. arjan wolthuis's Avatar
    But is it normal for phone with power bank so fast and by official charger so slow???
    Nope
    02-10-2016 11:56 AM
  7. prasanna moholkar's Avatar
    So does my power bank is safe for my Lumia 640???
    02-11-2016 01:50 AM
  8. arjan wolthuis's Avatar
    So does my power bank is safe for my Lumia 640???

    Why not. as long your Phone doesn't. Get hit by lightning it's fine:)
    02-11-2016 04:21 AM
  9. prasanna moholkar's Avatar
    I think all power bank available on market having output 5v and 1 amp
    But Lumia 640 has 0.75 amp charger
    02-11-2016 10:31 AM
  10. libra89's Avatar
    Yeah, 4 hours isn't normal. 2 hours and some is the usual for me.
    02-11-2016 10:43 AM
  11. prasanna moholkar's Avatar
    Check out u r charger rating it may be 1 amp or 2 amp.
    But Lumia 640 having official charger having rating 0.75 amp.
    02-11-2016 11:42 AM

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