Best way to power P4K with a V-mount battery?

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Todd Groves

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Best way to power P4K with a V-mount battery?

PostSat May 18, 2019 2:08 am

Does anyone have a recommended setup for powering the BMPCC4K with a V-mount battery? If so, what's the best wattage battery to use? Brand?
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Australian Image

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Re: Best way to power P4K with a V-mount battery?

PostSat May 18, 2019 3:34 am

Just get a proper V-lock mount with rails attachments and one that has power outlets for various voltages, 5V, 7.2V and 12V minimum. Then get appropriate power cables, 12V for the camera (the Blackmagic kit) and others for your peripherals.

The output of the battery will depend on how many peripherals are attached and how long you intend to shoot. I think a 120Wh is a good compromise for around 5-6 hours of operation, with a backup using an internal camera battery and batteries for the peripherals, such as a monitor.

Attachment methodology will be entirely up to you as to how you want to build a rig, and where and how you'll use it.
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Michael L

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Re: Best way to power P4K with a V-mount battery?

PostSun May 19, 2019 3:20 am

I agree, a proper V-mnt plate, and a fat battery (+98Wh), is the best choice for run time. But for a smaller footprint, slightly more adaptable choice, I'm using the Core SWX Powerbase Edge kits. I wish they had more than 48Wh capacity, but they are available with two USB (A-type) slots, and a port for an LP-E6 "dummy" battery. Point being, if you broke the 12V port on the side of the camera, you could still power-up with the dummy battery in the camera, wired to the same Powerbase battery.
Also like the Q/R bracket (plastic, but sturdy), and the 1/4"20 threads on the V-mnt side. And the digital timer for run/charge time is priceless vs. 4-5 LEDs. Getting about 2.5-3h run-time on just the camera and a 48V phantom power mic. Various dummy batteries are available for other cameras, or with the Sony L-type, monitors/lights. Hoping the next generation has USB-c and 98Wh options, but doing fine with three of the lighter 48Wh versions currently.
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Todd Groves

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Re: Best way to power P4K with a V-mount battery?

PostMon May 20, 2019 6:12 pm

I have a couple IndiePro 95W V-mount batteries with D-Tap. It says it outputs 14.8V. Is that too strong? Which V-mount batteries have 12V choices that would work for the BMPCC4K?
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Re: Best way to power P4K with a V-mount battery?

PostMon May 20, 2019 8:36 pm

14.8V is not a problem at all. As for which batteries, Google is your search tool. It all depends on brand, capacity and the price you're willing to pay. Mine is a Chinese brand mount and battery, and I have no problems with it whatsoever.

It's 120WH Rolux brand battery, mount and charger (don't forget the charger). It cost AU$360 (US$250) and, as I noted, provides five power outlets, three on the mount (12V, 7.2V and 5V) and two on the battery (14.8V and 5V USB).

Be mindful that if you travel by air a lot, the max battery capacity allowable varies from country to country.
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Todd Groves

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 12:40 am

Good. How long do you estimate my 95W battery would last if I only used it for the BMPCC4K camera?
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Australian Image

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 1:03 am

I'd say at least four hours if not five.
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Todd Groves

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 1:42 am

Australian Image wrote:I'd say at least four hours if not five.


Thanks, Australian Image.
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Swissified

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 5:37 am

I went with the British Hawk-Woods mini M50 14.4V 50Wh Mini V-Lok. I have a 30cm cable when attached to a cage and a 90cm for putting in a bag or pocket.
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JordanWright

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 8:24 am

Swissified wrote:I went with the British Hawk-Woods mini M50 14.4V 50Wh Mini V-Lok. I have a 30cm cable when attached to a cage and a 90cm for putting in a bag or pocket.


How long does the hawk-woods mini last for you?
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Robert Niessner

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 10:29 am

The PCC4K draws around 21W + whatever you have to power on accessories like SSD (which can add up to 3W during recording).

So a fresh 50Wh battery gives you around 50Wh/21W = 2h 22m (let's say 2h plus a safe margin)
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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 12:51 pm

I have one of the cheap Rollux 120wh batteries and it's been performing well. I always carry a spare but I easily get through the start-stop of a full shoot day without flattening the battery so I've never had to swap the Rolux out and can't tell you exactly how long it lasts.


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Cooper

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Re: Best way to power P4K with a V-mount battery?

PostTue May 21, 2019 4:30 pm

For my use I got 2 "mini" 100Wh 5A batteries (air traffic limit) with 15v d-tap and 5v usb out on the batteries. I mount both batteries to my rig (could use more elegant mounting solution), use the d-taps for camera and monitor and the usb ports for led light and SSD when needed. camera + ssd and monitor + light.
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Todd Groves

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Re: Best way to power P4K with a V-mount battery?

PostWed May 22, 2019 12:07 am

Cooper wrote:For my use I got 2 "mini" 100Wh 5A batteries (air traffic limit) with 15v d-tap and 5v usb out on the batteries. I mount both batteries to my rig (could use more elegant mounting solution), use the d-taps for camera and monitor and the usb ports for led light and SSD when needed. camera + ssd and monitor + light.


Thanks, Cooper. Would you happen to have any links to where I could buy such batteries?
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Cooper

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Re: Best way to power P4K with a V-mount battery?

PostWed May 22, 2019 11:31 am

The batteries i got are fxlion square ones, there is a kit of two with charger included if you can find one, the local dealer where i bought mine didnt have those. But shopping around you might find similar products even a bit cheaper, then again price if kinda fixed on decent quality lithium products.
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Todd Groves

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Re: Best way to power P4K with a V-mount battery?

PostThu May 23, 2019 5:05 am

I already have a dual charger for when I bought two IndiPro V-mount batteries for my Aputure lights and Sumo Monitor. From what I've gathered from this thread, I may just get one or two more IndiPro batteries.
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Re: Best way to power P4K with a V-mount battery?

PostThu May 23, 2019 9:31 pm

Here's a V-lock battery worth considering: https://www.redsharknews.com/production ... our-camera. They allow you to replace the cells, saving you money, and they appear to be quite compact as well.
https://australianimage.com.au/

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