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Powering an Atomos Ninja (sony NP-F battery mount)


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#1 Sarah Thompson

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Posted 17 July 2012 - 05:39 PM

Hi folks,

I've been experimenting recently with an Atomos Ninja HD recorder. Seems to work really nicely, I'm happy with the results, and going straight to Prores is really nifty. However, its out-of-the-box power solution is kind of nasty. It has two Sony NP-F style battery mounts on the back and no other power connectors. The standard (small) batteries supplied with it are just giving about an hour of record time each running ProRes HQ, which (duh) isn't remotely enough to be useful. It can accept larger NP-F style batteries, but since I'm trying to move my rig to AB gold mount for everything, I'd rather power it from that. Thing is, I can find gadgetry that will let me hook an AB battery to it, as if I was powering a camcorder, but I'd rather be able to power it from the same battery as the camera (which might be on a steadicam rig or mounted to the rail system with a cheese plate if I'm using sticks). My Google-fu is failing me -- does anyone know of a suitable adapter (i.e., 12V in, fake 7.4V NP-F battery out)?

If it was not for the weirdness of needing a fake battery rather than a plug, I'd probably have just built my own little power regulator, but...

Thanks,
Sarah
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#2 Eric Fletcher S.O.C.

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Posted 17 July 2012 - 05:45 PM

They are making a d and p tap adapter for it. I'll have the first one to test in a few days with a samurai which we are testing trying to solve a record flag issue with the Alexa
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#3 William Demeritt

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Posted 17 July 2012 - 06:34 PM

Eric: any day would be nice. I can't believe how long it's taken them.
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#4 Sarah Thompson

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Posted 17 July 2012 - 06:35 PM

Hi Eric,

Who is making the adapter? Atomos or AB?

Thanks,
Sarah
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#5 Benjamin Treplin

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Posted 18 July 2012 - 06:39 AM

Build my own one. Lemo 0B-306 to Samurai. Sony PC-100 batteries can be of use.
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#6 Sarah Thompson

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Posted 19 July 2012 - 11:12 PM

I just bought a used Sony clamshell monitor that happened to use the same batteries. It came with a power supply/charger with a fake battery. I popped it onto the Ninja, and it powered it just fine, so I therefore have a mains power solution. I'll probably modify the cable and build an 8V regulator which should make it possible to power it from about 10V to 25V. I don't know if the Sony parts are still available, but I can dig out the part numbers if anyone wants them.
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#7 Benjamin Treplin

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Posted 26 July 2012 - 01:23 PM

Surprise! Guess what was in my letter box today....
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#8 William Demeritt

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Posted 26 July 2012 - 01:31 PM

Really? That's it!? Just as large as the batteries, but with a Dtap plug on top? I mean, that's good for hiding the voltage regulator, but I was hoping for something less bulky. Does it include a male-to-male Dtap?
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#9 Benjamin Treplin

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Posted 26 July 2012 - 01:33 PM

Nope, just the adapter.
They added two longer mini BNC to BNC cables.
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