1. WanderingTraveler's Avatar
    So, some of you may be wondering, "Why is the 620's battery life so low?", and some of you speculated that Nokia was reusing batteries. Well, to a certain extent, that's true. Enter the BL-xJ family.

    If you think they tried to reuse batteries from newer Symbian phones, you're wrong. The 5800 Xpressmusic uses a BL-5J (1320 mAh variety) battery. It was from 2008.
    One of the lowest-end phones they used this on was the Nokia X1-01. They used this on various low-end feature phones, and Symbian smartphones. For a long time, the battery capacity was enough.
    Take note that the only battery line to be of higher standard than the BL-xJ line was the BP-xL line.

    Enter the BL-4J. If you're one of the (un)lucky people to buy a Nokia C6, you're in luck if you're also buying a 620. You now have a perfectly sized back-up battery.
    It was actually rather obvious that the BL-4J was designed to be a slightly smaller alternative to the BL-5J, intended for cost-cutting.

    Then, Nokia plunged headfirst into Windows Phone.

    Let's just say the Nokia engineers expected nicer things to come out of the battery.
    The rest of this is history.
    crash1989, xandros9, Oris and 1 others like this.
    06-27-2013 07:27 AM
  2. crash1989's Avatar
    Good info, never knew this.
    06-27-2013 07:40 AM
  3. inteller's Avatar
    that's a cool story, but will any of the bigger capacity nokia batteries fit the 620? I want a 620 cause it has all the things the 520 doesn't, but I don't want crappy battery life.
    06-27-2013 09:31 AM
  4. winphoneaddict's Avatar
    I recently bought a 520, and swapped batteries between that and my 620. I will say that the 1430mah battery does last significantly longer in my 620, than the 1300mah battery that came in that phone. Plus, the 1300mah battery is more than adequate for the 520. I know it probably seems odd, but the extra 130mah does make quite a bit of usage time difference for me in the 620. I am a fairly heavy user as well.
    Oris and WanderingTraveler like this.
    06-27-2013 08:14 PM
  5. Arjun KR's Avatar
    I recently bought a 520, and swapped batteries between that and my 620. I will say that the 1430mah battery does last significantly longer in my 620, than the 1300mah battery that came in that phone. Plus, the 1300mah battery is more than adequate for the 520. I know it probably seems odd, but the extra 130mah does make quite a bit of usage time difference for me in the 620. I am a fairly heavy user as well.
    Well that doesn't make sense,520 has 4" screen compared with 3.8" of 620,so obviously 520 need bigger battery than 620
    06-28-2013 07:09 AM
  6. WanderingTraveler's Avatar
    I'm actually thanking Nokia for doing this because I know of at five people with phones that have BL-5J batteries.

    Now, to go get them.
    06-28-2013 07:10 AM
  7. Miroslav Volovec's Avatar
    What do you think about this battery? BXT 2600mah Standard Li-ion Spare Replacement Battery: Amazon.co.uk: Electronics
    Can I place this battery in my lumia620 ?

    Thank you for reply
    07-11-2013 02:04 AM
  8. technogeek019's Avatar
    the battery on the lumia 620 is actually not so bad
    the fact is that during the first few days of use it may seem low as u would be heavily using it ( downloading maps, apps,mix playlists and other stuff) but as the days passes the use will become lighter so the battery lasts longer i have a lumia 620 and with just a few calls a little music and some wifi use the battery can last more than few days
    07-14-2013 10:00 AM
  9. rishabh mishra's Avatar
    for an guy who puts the 620 in power saving mode, then it will last more than 24 hrs if did only few calls, while if played temple run and read pdfs also then it will last for atleast 12 hrs, 620's 1300mah personal experience. can i use any 2300mah battery as its replacement ???
    07-24-2013 05:18 AM
  10. babhishek's Avatar
    I recently bought a 520, and swapped batteries between that and my 620. I will say that the 1430mah battery does last significantly longer in my 620, than the 1300mah battery that came in that phone. Plus, the 1300mah battery is more than adequate for the 520. I know it probably seems odd, but the extra 130mah does make quite a bit of usage time difference for me in the 620. I am a fairly heavy user as well.
    will be buying the 520 battery based on your review, thanks!
    09-20-2013 03:40 AM
  11. Dragunov2's Avatar
    Better go for a Mugen battery for the 520, it has even more capacity and it's the same size as the original 520 one.

    My battery lasts for two days on Amber
    09-20-2013 11:26 AM
  12. Sohan Mahajan's Avatar
    Well that doesn't make sense,520 has 4" screen compared with 3.8" of 620,so obviously 520 need bigger battery than 620
    Well..looks like u have not compared the both phones either... Lumia 620 has ultrabright display as compared to 520 n 720.... if u feel m wrong just check it out...set color theme to Red or Cobalt(Bcz for our eyes RYBs r best colors to judge).. n set all 3 phones to high brightness mode...u'll see the difference on start screen urself...that's one of the reason why 620 consumes more battery.. that makes it my favorite....

    ---using Lumia 620 n L720 since June
    09-21-2013 11:28 AM
  13. Naveen Navi V's Avatar
    Well..looks like u have not compared the both phones either... Lumia 620 has ultrabright display as compared to 520 n 720.... if u feel m wrong just check it out...set color theme to Red or Cobalt(Bcz for our eyes RYBs r best colors to judge).. n set all 3 phones to high brightness mode...u'll see the difference on start screen urself...that's one of the reason why 620 consumes more battery.. that makes it my favorite....

    ---using Lumia 620 n L720 since June
    Ya buddy i agree with you because even i compared with lumia 720 n 620. 620 have bright red which 720 red theme look dull.
    09-21-2013 11:49 AM
  14. dlls's Avatar
    1430 mAh BL-5J work perfectly on Lumia 620 and they provide about 10% longer battery life. I think Mugen bateries are kind of nonsense for the price they ask for them. $50 simply isn't worth it, I could buy 4x BL-5J batteries for that money.
    09-22-2013 03:57 AM
  15. Naveen Navi V's Avatar
    1430 mAh BL-5J work perfectly on Lumia 620 and they provide about 10% longer battery life. I think Mugen bateries are kind of nonsense for the price they ask for them. $50 simply isn't worth it, I could buy 4x BL-5J batteries for that money.
    Does your back panel fits perfectly or you finding any gap?
    09-22-2013 04:57 AM
  16. Dragunov2's Avatar
    1430 mAh BL-5J work perfectly on Lumia 620 and they provide about 10% longer battery life. I think Mugen bateries are kind of nonsense for the price they ask for them. $50 simply isn't worth it, I could buy 4x BL-5J batteries for that money.
    My wife has a Mugen battery for her Galaxy MINI2 and the Phone has a longer cycle till the battery is empty
    09-22-2013 05:52 AM
  17. Fong Chea's Avatar
    I bought a Nokia lumia 620 already,but the battery is not good right now......n also cannot open too.....So why???
    12-22-2013 10:52 AM

Similar Threads

  1. Nokia Lumia 720 often freeze
    By TheBedroom in forum Nokia Lumia 720
    Replies: 25
    Last Post: 01-06-2016, 01:52 AM
  2. Lumia 520 bug
    By csmith03 in forum Nokia Lumia 521
    Replies: 19
    Last Post: 10-22-2013, 03:35 PM
  3. Lumia 920 Replacement
    By Prabhat Ram in forum Nokia Lumia 920
    Replies: 6
    Last Post: 07-11-2013, 12:36 AM
  4. Nokia Lumia 720 date time automatic update issue
    By TheBedroom in forum Nokia Lumia 720
    Replies: 1
    Last Post: 06-27-2013, 09:04 AM
  5. Replies: 1
    Last Post: 06-27-2013, 08:02 AM
LINK TO POST COPIED TO CLIPBOARD