Video Camera Batteries Mod

Discussion in 'Professional Video Production' started by Gary Smith, Jul 9, 2009.

  1. Gary Smith

    Gary Smith Guest

    Hi all, i am playing around with some video cameras here and want to mod the
    batteries. First, i have a sony digital 8 DCR-TRV265E and a JVC Mini DV
    GR-D350AA.

    I am going to buy 2 SLA batteries, 12v 7Ah, connect them to a voltage
    regulator circuit to reduce to 7.2v. The SLA's should run for ages. then i
    won't have to worry about changing/carrying/charging heaps of batteries. One
    of my questions is, The Sony has 3 terminals on it's battery (NP-FM30) and
    the JVC has 4 (JVC BN-VF707U). The JVC has +, -, T and C. I was wondering if
    anyone knows what these extra terminals are for (there would have to be one
    for reporting battery charged state i guess). As i will probably need to
    "trick" the cam somehow. ANY and ALL comments appreciated.

    BTW i will be shooting for 2 full days with hopefully 3+ cams hence the need
    for minimal batteries. And if anyone has any suggestions on how to do
    similar thing reguarding tapes i'm all ears (and eyes) lol.

    Thanks

    Gary
     
    Gary Smith, Jul 9, 2009
    #1
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  2. The Sony NP-F970 (7.2v., 6.6Ah) has the three contacts for
    the Sony camcorder, and you may be able to make an adapter
    for the camera using a suitable cord (if the camera has a power-in
    socket) and a "sled" for the battery. You will lose charge-state
    readings in the VF (but I've never found these very accurate
    anyway). DO NOT CONFUSE THE POLARITY IN ANY
    WIRING, AND TAKE "HEROIC" STEPS TO AVOID ANY
    POSSIBILITY OF SHORTS!!!!! Likely, the same is true for
    adapting to the JVC. These batteries do "last forever"...;-) As for
    tape, there are 80-minute Mini-DV tapes that can be run in LP
    mode for two hours on a tape, and I seem to remember there
    being extra-long Hi-8 tapes, also, for the D-8 camera.
    --DR
     
    David Ruether, Jul 9, 2009
    #2
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