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One little goat has a new battery solution for bmpcc 4K and bmmcc

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  • #16
    Swit, ikan IBS-U65 BP-U , SHAPE 65Wh BP-U65
    also IDX System Technology have new low priced 14.4V Li-Ion Batteryes for Sony BP-U just check at B&H

    also some compact v-mounts: bebob VMM-MICRO and less expensive fxlion V-Mount Battery NANO ONE both are 50 and 100wh models and have additional compact v-mount plates

    I don't want to feel like spammer here but seems the idea of dummy LP-E6/NP-F plate was partially taken from my BMMCC 14.8V Battery Module project started about a year ago http://www.bmcuser.com/showthread.php?21668 but i am not a RED-like patent troll and don't mind to patent things to limit progress...

    Overall the idea to take batteries from the enclosure every time to charge them and then put back looks overcomplicated. That plastic cap clamp probably wear very fast. Also it seems those enclosures don't have protection/balancing/charging circuit board so you forced to use more expensive and less reliable protected 18650 cells + expensive external charger.
    You dudes are really brave to preorder battery enclosure that exists only as 3d printed sample without any real life field field tests And also double brave to use thin plastic enclosure as side handle for rather heavy camera. Handles are kind of things with very high dynamic load that may easy break apart thin plastic shell.
    Also similar rosette mount attachment already manufactured by SmallRig and also costs less and looks better.
    All my custom made accessories for BMMCC/BMMSC now available here https://lavky.com/radioproektor/

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    • #17
      The Shape batteries are 14V and have one Dtap port. 14V is too high voltage for the 7.2V mount so it would need two output ports. They would not be sufficient for the Micro.

      The IDX batteries are 14V and the DC output is 5V, inadequate for running a monitor.

      The Ikans are also 14V batteries, but have a DC barrel cord and a Dtap. These would probably be sufficient but I don't know of a lpe6-NP dummy adapter and the leads on the back go to waste. They are also around $170. Way too expensive for one battery.

      All of those batteries are BP-U not L mount and are extremely expensive.

      The bebob's start at $225 not including a mount, and some kind of adapter to put on the back of the camera. Any vmount setup instantly kicks the Micro up into the next size category comparable to larger camera systems and defeats the purpose.



      Even if the BP-U batteries have some kind of regulator to only output 7.2V when mounted on L mount devices they are still prohibitively expensive.
      The NP970 with 12V output battery I currently use but cost me $24 and lasts for 90 minutes of continuous RAW recording with monitor.

      I'm not going to invest any more money in this rig I built two years ago and only use as a B cam. At least the OLG Batteries are affordable and work on multiple devices.
      Last edited by GeranSimpson; 04-16-2019, 07:59 AM.

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      • #18
        Even the 3D printed versions look solid.

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        • #19
          Also project starter provide strange calculations:
          As an example, 4x Panasonic 18650 cells cost under $30 and provide up to 13,000mAh capacity - making this type of power solution more affordable than other solutions (equal to five LP6 batteries).

          Let's see: 1x 18650 is 3.7V 3250mAh (3.7V x 3250mAh = 12watt-hour)
          4x 18650 cells may be combined like:
          3.7V @ 13000mAh (3.7V x 13000mAh = 48.1watt-hour)
          7.4V @ 6500 mAh (7.4V x 6500mAh = 48.1watt-hour)
          11.1V @ 4333 mAh (11.1V x 4333mAh = 48.1watt-hour)
          14.8v @ 3250 mAh (14.8v x 3250 mAh = 48.1watt-hour)

          Average LP-E6 battery is 7.4V @ 1800 mAh (7.4V x 1800mAh = 13.3watt-hour)

          So 4x 18650 pack may be equal to 3.6 PL-E6 batteries.
          But probably depending of 18650 and LP-E6 quality it may be equal from 3 to 5.

          Also t seems his battery enclosure use internal regulated power output which lowers usable battery capacity. Average DC-DC conversion circuit efficiency is 90-95%.
          Last edited by shijan; 04-16-2019, 05:51 PM.
          All my custom made accessories for BMMCC/BMMSC now available here https://lavky.com/radioproektor/

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          • #20
            It looks very good price/performance wise, I understand you have a similar product and it feels a bit like you're trying to make this one look bad.

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            • #21
              It appears that the plates for the OLG batteries are dummy adapters, so cables are required for all uses.

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              • #22
                Originally posted by stip View Post
                It looks very good price/performance wise, I understand you have a similar product and it feels a bit like you're trying to make this one look bad.
                +1
                On skin tones- "Give me mud and I will make the skin of Venus out of it, if you allow me to surround it as I please", Eugéne Delacroix

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                • #23
                  Originally posted by stip View Post
                  It looks very good price/performance wise, I understand you have a similar product and it feels a bit like you're trying to make this one look bad.
                  shijan is well known for two things around here (at least):
                  1. Being INSANELY attentive to detail.
                  2. Not being particularly warm and cuddly.

                  That doesn't make him wrong.

                  This forum has benefited many many times from his assertive style, expertise, and willingness to share a LOT of information. Even the kind that might seem to some like minutia.



                  I'm in for one of The Goat's battery boxes, and I have no problem with anything shijan has pointed out. In fact I rely on it.
                  Cameras: Blackmagic Cinema Camera, Blackmagic Pocket Camera (x2), Panasonic GH2 (x2), Sony RX100 ii, Canon 6D, Canon T2i,
                  Mics: Sennheiser, AKG, Shure, Sanken, Audio-Technica, Audix
                  Lights: Every Chinese clone you can imagine

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                  • #24



                    All my custom made accessories for BMMCC/BMMSC now available here https://lavky.com/radioproektor/

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                    • #25
                      New update, one little goat has changed the handle to aluminum.
                      On skin tones- "Give me mud and I will make the skin of Venus out of it, if you allow me to surround it as I please", Eugéne Delacroix

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                      • #26
                        Originally posted by Sansetsu-Guyse View Post
                        New update, one little goat has changed the handle to aluminum.
                        Very nice.

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                        • #27
                          Nice!
                          Álex Montoya on IMDB
                          https://www.imdb.com/name/nm0600257/

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                          • #28
                            Got mine.
                            Cameras: Blackmagic Cinema Camera, Blackmagic Pocket Camera (x2), Panasonic GH2 (x2), Sony RX100 ii, Canon 6D, Canon T2i,
                            Mics: Sennheiser, AKG, Shure, Sanken, Audio-Technica, Audix
                            Lights: Every Chinese clone you can imagine

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                            • #29
                              The indiegogo says it attaches to the back of the BMMCC and can power it plus a monitor for 4 hours. It doesn't say specifically that it powers the BMMCC via the back of the camera though. Can anyone confirm this?
                              Last edited by GeranSimpson; 04-23-2019, 08:02 AM.

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                              • #30
                                Originally posted by GeranSimpson View Post
                                The indiegogo says it attaches to the back of the BMMCC and can power it plus a monitor for 4 hours. It doesn't say specifically that it powers the BMMCC via the back of the camera though. Can anyone confirm this?
                                it power by a cable, meaning you need a break out box, or custom cable for the expansion bmmcc d connector, or cut off all the wires you don’t need from the cables that come with the bmmcc, or don’t mount the thing on the camera an use a dummy battery, or look at all the info that one little goat provided and figure it out yourself. And if you can’t do that, the bmmcc is definitely not a camera for you.

                                You could also just ask one little goat, unless of course you thought you could just ask someone to do it for you and report back.
                                Last edited by Sansetsu-Guyse; 04-23-2019, 09:23 AM.
                                On skin tones- "Give me mud and I will make the skin of Venus out of it, if you allow me to surround it as I please", Eugéne Delacroix

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