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14,4v and 14,8v


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#1 Matteo Quagliano

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Posted 20 April 2009 - 05:34 AM

Today it's my first day with a professional tool... The Archer... I have no words and I'm still understanding the right setting for the arm to carry a sony betacam DXC-D30 (approx 10 kilos) but I'm here for another issue. I have 2 good IDX Endura 80 Lion batteries from Steadicam and they work fine. I have also some other V-lock batteries for my cameras not branded and they are signed as 14,8v and 6,6Ah instead of 14,4v and 5,7Ah as the original Steadicam batteries.
Well my obviuos question is... can I use them in the Archer too? Do I risk to burn something?

Thanks for replying and for forgiving me if this question has already been asked. But I want to be safe and not to burn everything at my first flying..

Matteo (the happiest stadicam op in the world) Quagliano
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#2 Anders Holck Petersen

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Posted 20 April 2009 - 10:44 AM

Most broadcast equiptment will operate on an input voltage between 11.5v and 17v.
The Li-ions you mention will most likely be around 16.5v hot off the charger and drop to 11v when depleated. It will work fine. No need to worry.

The Amperage hours (AH) describes the capacity of the battery: how long it will power your monitor, follow focus (and camera if powered off the sled). A higher capacity will just run your ascessories for a longer period, it cannot fry or destroy anything.
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#3 G. Grammatikos

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Posted 20 April 2009 - 03:06 PM

the problem is if you use two off them for 24v camera as the batterys will give 29.6v minimum and when are fresh chearged ???34v?32???ithink most cammeras have 30-32V fuse
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#4 Matteo Quagliano

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Posted 21 April 2009 - 04:09 AM

Thanks Anders... I do imagine it but I need a confirm before going on... For now no 24v needs, hopefully in the future and an electrician class too ;)

Matteo
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#5 Lukas Franz

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Posted 21 April 2009 - 11:50 AM

the problem is if you use two off them for 24v camera as the batterys will give 29.6v minimum and when are fresh chearged ???34v?32???ithink most cammeras have 30-32V fuse


Maybe you measure over 30V using two fully charged 14.4V or 14.8V batteries, but if you power up the camera you'll measure less 'cause the voltage drops suddenly. And the fuse doesn't react to the voltage but to the current (of course it's related to each other, but I've never seen any 30-32V fuse!).

I don't think you're able to blow the fuse of a contemporary film camera only because you're using 2 fully charged batteries. Rather you don't get the camera started 'cause you have too less power (current) from the batteries.

My experience and knowledge ;-)
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#6 G. Grammatikos

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Posted 22 April 2009 - 02:14 AM

yes Lukas that i mean arri has cut over 30-32v (doesnot start as you said )but i have hear for moviecams (terror) and what about Red??
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#7 Matteo Quagliano

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Posted 22 April 2009 - 02:40 AM

Never touched one... but from what I've understood RED is 12v... Correct?
May be it's better to plan that elecrtician class soon...
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#8 Lukas Franz

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Posted 22 April 2009 - 04:18 PM

Never touched one... but from what I've understood RED is 12v... Correct?
May be it's better to plan that elecrtician class soon...


Yes, the RED needs 12V and lots of fully charged batteries! ;-)
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