Jump to content


Using P-Tap to connect batteries in parallel

  • Please log in to reply
5 replies to this topic

#1 Michael Desiderio

Michael Desiderio

    Advanced Member

  • Sustaining Members
  • 107 posts
  • New York

Posted 23 August 2014 - 12:37 PM

Any reason this couldnt be done, barring the possibility of batteries having an input protection diode?


Talking about lengths of only a few inches so I tend to think that current would not be an issue at only a few amps tops

  • 0

#2 Alan Rencher

Alan Rencher

    Advanced Member

  • Sustaining Members
  • 1098 posts
  • Los Angeles

Posted 23 August 2014 - 06:22 PM

You might have problems if the batteries aren't close in voltage. They might try to charge each other.
  • 0

#3 Michael Desiderio

Michael Desiderio

    Advanced Member

  • Sustaining Members
  • 107 posts
  • New York

Posted 24 August 2014 - 06:59 PM

I was planning on only using 100% charged batteries of same age and brand

  • 0

#4 Janice Arthur

Janice Arthur

    Advanced Member

  • Moderators
  • PipPipPip
  • 813 posts

Posted 24 August 2014 - 07:34 PM


If you can keep up the same batts and all 100% charged etc. that's great but just normal details.

1) batteries don't age the same and you can have the same age etc and still have one that has cells that go bad at different rates.
2) normal shooting frenzy will invariably throw an odd different battery in the mix and could cause you problems
3) how much energy and attention are you going to spend making sure all this stuff gets done when it distracts you from your real job of shooting?

I've certainly got perspective on lots of things and I see how I spent lots of energy on stuff that was a distraction and not where I should have been spending that time and energy. Those are the foils of youth and make us learn the most, so you have the advantage of the internet and all of our 40 years of experience to get smarter quicker.

That's my input. Use it however make sense.

Good luck and try everything.

  • 0

#5 thomas-english


    Advanced Member

  • Sustaining Members
  • 1165 posts
  • UK

Posted 25 August 2014 - 03:50 AM

I think it isn't a problem with V-Locks putting unprotected batteries in parallel but I heard AB batteries do have issues with back charging hence why PRO now have a diode on the AB plate. 

  • 0

#6 Victor Lazaro

Victor Lazaro

    Advanced Member

  • Sustaining Members
  • 1231 posts
  • Sunnyside Queens, NY

Posted 25 August 2014 - 09:39 AM

Would back charging still be an issue with a diode in the A/B plate?

  • 0


Ritter Battery

Omnishot Systems

PLC Electronics Solutions

Engineered Cinema Solutions

Media Blackout - Custom Cables and AKS

Wireless Video Systems

GPI Pro Systems

Betz Tools for Stabilizers

PLC - Bartech

Varizoom Follow Focus

rebotnix Technologies

The Moses Pole - Steadicam Monopod

Paralinx LLC

Boland Communications