Watson Dual Battery Charger for Oly BLN-1 batteries

Discussion in 'Accessories' started by MarkoPolo, Mar 28, 2014.

  1. MarkoPolo

    MarkoPolo Mu-43 Regular

    Jan 25, 2014
    Greeley, CO
    Real Name:
    Mark Brown
    • Like Like x 2
  2. bassman

    bassman Mu-43 Top Veteran

    Apr 22, 2013
    New Jersey
    Real Name:
    Looks very interesting. B&H also carries the adapter plates for all kinds of different batteries that go with this charger.
  3. mcasan

    mcasan Mu-43 All-Pro

    Feb 26, 2014
    I know some locations like safari camps/lodges may have power for only a few hours in the evening. So you need to charge many batteries in parallel as quickly as possible. I think I will get one and check it out.
  4. mattia

    mattia Mu-43 Hall of Famer

    May 3, 2012
    The Netherlands
    There are similar products on eBay for about 18 dollars. Just as an alternative. Look like double size versions of the ones I got with my third party batteries, which work fine.
  5. JYPfoto

    JYPfoto Mu-43 Veteran

    Aug 27, 2013
    I have this one for my X-T1 batteries and will no doubt get the battery plates for the GH4 batteries later. One thing I love about it is the LCD readout that shows the percentage of charged, sometimes you're in a rush and need a quick charge, so seeing that a battery can go from 10% charged to 50%, is a great thing to have.
  6. mcasan

    mcasan Mu-43 All-Pro

    Feb 26, 2014
    Picked up the Watson Duo Chargers today at the UPS Center. Am charging two Olympus batteries. The charger gives charge percentages in 5% increments. It does seem to charge a little faster than the Olympus OEM charger. I have not yet tried it with the one 3rd party battery I have. With the power off, you can put in a battery and push the Test button and get a readout of the battery charge level. It is roughly twice the footprint of the Olympus OEM charger.

    What I like most....two batteries charging from one AC power receptacle with graphical readout....with a USB port that can charge a phone, tablet...etc.
  7. mcasan

    mcasan Mu-43 All-Pro

    Feb 26, 2014
    My two Olympus brand batteries work 100% with the charger. My Power2000 battery seems to charge but the charger reports it as 0% charged. I think I will stick with Olympus batteries from now.
  8. iansmith

    iansmith Mu-43 Regular

    Mar 19, 2014
    I assume that due to the readout it is designed to work with chipped batteries like the Olympus charger?

    I have the battery that came with my E-P5 and two third party chipped ones that show battery level in the camera and work with the chager. This would be great for trips, but I would want to verify it handles batteries like the stock charger.
  9. mcasan

    mcasan Mu-43 All-Pro

    Feb 26, 2014
    So far both the wife's Watson and mine are charging Olympus battles just fine and our E-M1s has no problem with their batteries.
  10. budeny

    budeny Mu-43 All-Pro

    Mar 4, 2014
    Boulder, CO
    I simply put two oem chargers together with double-sided tape and soldered shorter power cord with two connectors to chargers:
    Mostly for the reason that I usually use 2 batteries per day during my hiking trips and I don't have time to charge one after another.

  11. iansmith

    iansmith Mu-43 Regular

    Mar 19, 2014
    Have you had any problems with Olympus branded batteries and this charger? I have one BLN-1 that came with my E-P5 and two fully chipped knock offs. The Watson charges the knock offs fine, but the Olympus BLN-1 never goes past 95% no matter how long I leave it in. It doesn't get warm at all after that point, but never makes it to full. Put it in the Olympus charger and the light goes out showing it's full.
  12. owczi

    owczi nareteV 34-uM

    I did almost the same. For my two chargers I simply bought a ready made Y-type figure 8 cable, they are easily available.
  13. ThomD

    ThomD Mu-43 Veteran

    Jun 1, 2013
    SF Bay Area
    Since I have three different cameras, the Watson charger is great. Having progress meter is so much better than just a flashing light. I picked up a version that had oddball JVC battery plates at a discount and ordered the plates I needed from B&H.
  14. Reflector

    Reflector Mu-43 Veteran

    Aug 31, 2013
    Did the same and I'm just waiting for the BLN-1 plates from B&H. If I have some time I'll be able to do some recharge + discharge for capacity cycles (Using a Hyperion EOS 0720i NET3 hobby charger.) with some Progo batteries I've been using for a while.
  15. hrsy1234

    hrsy1234 Mu-43 Regular

    Mar 29, 2013
    East London
    I am looking for one of thsee but am struggling to google the right thing - can you assist?
  16. barry13

    barry13 Super Moderator

    Mar 7, 2014
    Southern California
    Real Name:
    It's a C7 plug on the cord...

    I don't see any North American NEMA to C7 splitter / Y cables for sale, but you could have someone make one.

    I did find this one:

    But you'd need another adapter (readily available) for wall-power to the IEC computer plug. Those IEC plugs would add a lot of bulk - unideal for travel.

    Maybe this is what you need (I'm unfamiliar with UK power outlets):
    2.5 meters seems overkill.

    • Like Like x 1
  17. owczi

    owczi nareteV 34-uM

    I'm using the C7 to UK wall plug Y cable that barry13 mentioned (last in his reply). It is long and thick but works for me.

    The connector on the charger side is also sometimes called "figure 8".
    • Like Like x 1
  18. CrayzeeDiamond

    CrayzeeDiamond New to Mu-43

    May 3, 2014
    Look like a great product. Reading the description from b&h, it means it can charge gx7 batteries also?

    Sent from my Galaxy Nexus using Tapatalk
  19. rhom

    rhom Mu-43 Rookie

    Jul 5, 2013
    Sacramento, CA
    Real Name:
    Never heard of this Watson Duo charger until I read this thread a few weeks ago. Sounded like a great idea, so I ordered the cheaper JVC version for $50 via BH and the adapter plates for two BLN-1s, and Nikon plates for my other cameras ($2/each). Total price was much less than the $80 quoted for the dual BLN-1 version.

    Works great! Thanks for the tips!