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Powering GH2
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  • fehafeha

    I got the battery: Mini DC 12V 6800mah Rechargeable Li-ion Battery Pack I think they use false capacity statements, when i connect on z96 LED light at max, the voltage of the battery drops to 11.2v, even fully charged, i think NP970 gives better capacity a real 6800mah. Will be testing how long it will last using single z96 led ... The best way would be to invest on real v-mount batteries ...

  • alexdolginalexdolgin

    Alfi666 this is very true about the battery capacity claims. Not so long ago one of the Chinese manufacturers contacted us asking to start selling their batteries. The specifications did not look very impressive, the capacity number was less than that of the OEM battery it was supposed to replace. When I pointed that out to them, they said that they could print any label on it, whatever we want them to ;-)

  • alexdolginalexdolgin

    The way it works, we have more custom options for direct ordering through our system. It does not mean you can not order the same through B&H or other dealers. You just need to contact them and tell them what you want, they place their order with us, so we drop ship to their customer from here. It just takes a little longer.

  • PixCanFlyPixCanFly

    @alexdolgin I see that there's no option to select cable length in B&H site.

  • Alfi666Alfi666

    Capacities on those eBay "all in one" batteries are fake... I know as I have one... If you start thinking on how huge must be a 6800mAh 12V battery... and you find out that these batteries are not even 1/3rd of the approx size...

  • alexdolginalexdolgin

    We have a 7.2V version of it listed http://www.bhphotovideo.com/c/product/842687-REG/Dolgin_Engineering_DC_7200_20_1_7_4_75_SL_DC_CONVERTER_w_2_1mm_JACK.html This is a new product, so it is not setup yet. It still could be ordered through them, but not using their website.

  • PixCanFlyPixCanFly

    @alexdolgin my apologies. I missed the decimal point. BTW, do you have this listed in B&H?

  • alexdolginalexdolgin

    PixCanFly, it is .6", not 6". Can you point where did you see the wrong dimensions? I can not seem to be able to find it. Thx

  • PixCanFlyPixCanFly

    @alexdolgin Just check out your GH2, SL DC converter. The dimension listed is 3"X2"X6". The size is as large as a V-mount battery. Can't this be made a little smaller?

  • alexdolginalexdolgin

    Hmm... contact us directly so we could find a cost effective shipping option to EU .

  • fehafeha

    @alexdolgin that's great but for us in EU price + shipping + customs etc ...

  • fehafeha

    @fatpig sure, he was happy one to get it, I'm afraid of fake facts when they declare mA/h

  • alexdolginalexdolgin

    We are shipping a stand alone converter now http://dolgin.net/zen_dolgin/index.php?main_page=product_info&cPath=18&products_id=113 it allows to use any battery 10V-25V as it puts out 8.9V for the GH2 camera. The smart algorithm based LED voltage monitor is built in.

    v-Doubler-SPL-GH2_2.jpg
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  • fatpigfatpig

    @feha: there is one user on this forum who uses this battery for his setup, i think it was in this thread.

  • fehafeha

    @Alfi666

    be careful, never use any higher voltage on that converter. (http://www.ebay.ie/itm/320801253113) If you by accident connect 12v it will out-put +difference (14-16v), this may brick your GH2, there is no voltage stabilization !!!

  • fehafeha

    @fatpig check sellers feedback, many complains on similar selling products (some never get it, some could use it just once ...) ...

  • fehafeha

    @jweeke

    you will need step down as i think 10v is too much for GH2, but if you can get 9v battery that should work fine without converter. I have bought this one: http://www.ebay.ie/itm/200711976856 and will be using step down adapter. As i can't trust these batteries, decided to get a stable output, more security. Also 12v can be used with most other equipment.

  • fatpigfatpig

    still, i think this is the best option: http://www.ebay.de/itm/170556707790?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 5v: 15.000 mAH 9v: 8.500 mAH 12v: 6.500 mAH

    for 23,73 USD :)

  • jweekejweeke

    5400mah with 5V and 10-12V outs for less than $20. Think it'd power H4n and GH2 out of the box, or would you need to step down from 10V?

    http://www.alibaba.com/product-gs/397763089/Dual_Output_Li_Battery.html

  • itimjimitimjim

    @feha my next port of call is to buy the lanparte battery pinch, and add my own 9v dc plate mount connector through one of those multivolt converters.

  • fehafeha

    @sam_stickland I'm waiting for ABS plastic project box, a small one, will make a tutorial. Adding two of these DC-DC you can get one input any voltage:3-30v and stable output 9v and 12v if you add one more Dc-DC can get even 5v ... so three DC converters inside one box with one input and three outputs ...

  • sam_sticklandsam_stickland

    @feha Thanks. I'm thinking to power my GH2, Tascam DR100 and eventually a small monitor off a single battery solution, so I was hoping to find one that already has a choice of stable outputs. It seems a little clunky to have three DC-DC converters off the back of a single battery.

  • fehafeha

    @sam_stickland

    No did not test the battery 12,9,5 ... On the picture i use NP970 and works great ... this solution allows to use any battery range 3v to 32v this gives more flexybility to use any link of batteries ... @Alfi666 That's ok, but just be careful about heating, won't be good to get heat inside GH2 body ...

  • itimjimitimjim

    @sam_stickland I ordered the same ages ago, but I'm still waiting for it :-/

  • sam_sticklandsam_stickland

    @feha Did you try that ebay 12,9,5 battery? What sort of voltage ranges did it up putting out?

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