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Topic: How much weight? and needing some help (Read 5990 times)
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Alan Dague-Greene
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Pardon all the pictures, I just want to be sure I got things right.
I have a monitor, the Lilliput 319GL-70NP. It's 12V. Today I bought a battery, which is also 12V, and 5Ah. I'm assuming that means amper/hours, which means I could run the monitor for 5 hours at full-blast. Is that correct?
Also (my real issue), the battery is heavy, probably about 4lbs (1.8 kg). My camera will only be 5 or 6 pounds, so you see my dilemma. I'm either going to have to drop the gimbal way down and shorten the sled as much as I can, or find a lighter battery.
How much do other people's batteries weigh? Do you think I could find a 12V battery that would provide enough running time, but be lighter? I'm skeptical about using a drill battery. I have to charge my drill batteries after about 15 minutes of heavy use, and they're practically brand new.
Thanks for any advice you can provide. The attached pictures show the battery and cords that came with it, including the labels that I don't understand. I'm not actually using these cords, but maybe their labels will give you an idea of what I have purchased.
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Trevor Crump
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Hi Alan, I use a lead acid battery, mine is 12v 2.6ah, I get about 2 hours out of it (as long as I am not sending video wirless) I think your battery might be a bit overkill, but then only you can make the decision on how much to carry.
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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Alan Dague-Greene
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Thanks, Trevor. I'm hoping to get 4 hours out of this battery, so maybe it's not so bad. Could you tell me how much yours weighs?
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Jamie Glover
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 Come with me now on a journey through time and space.. |
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Trevor Crump
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Thanks Jamie, just purchased 3 of them...
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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Jamie Glover
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If my kitchen scales are right they are actually only 175g per batt pack
If you rig your three together you should get 5.4Ah and only 525g of weight.
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Alan Dague-Greene
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So, the voltage would remain the same (12V), but the ampere hours go up? They would power your monitor for a longer period of time, but the output would remain the same, is that correct? Ok, I was just reading a FAQ that says if you connect the batteries in parallel, their voltage will remain the same but the capacity is increased. I guess you would just need the right wiring to go from one battery to the next with these plug connectors, I'm not sure what they're called. |
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« Last Edit: March 14, 2006, 10:54:38 PM by Alan Dague-Greene »
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Trevor Crump
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Remember the Ah is in milliamps, but yes the voltage in parallel is the same, increase in capacity. In 'series' the voltage would increase but with the 'same' capacity.
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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michael stevenson
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Great contribution TC.  |
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Trevor Crump
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Thanks  |
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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Jamie Glover
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So, the voltage would remain the same (12V), but the ampere hours go up? They would power your monitor for a longer period of time, but the output would remain the same, is that correct? Ok, I was just reading a FAQ that says if you connect the batteries in parallel, their voltage will remain the same but the capacity is increased. I guess you would just need the right wiring to go from one battery to the next with these plug connectors, I'm not sure what they're called. To make it clear here is a quick pic I did to show how to connect them you can connect as many as you need The good thing is as long as one battery is connected you can swap the others so you can shoot 24/7if you want as long as you have enough charged batteries.. |
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Trevor Crump
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Got it in one Jamie, great diagram.
Now if one of those batteries in connected in series. you can have 12v/24v at the post head, that is our intention.
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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Jamie Glover
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like so |
 24v.jpg (10.65 KB - downloaded 164 times.)
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Trevor Crump
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Spot on. now imagine a 1st battery connected in paralel with 2nd and another tap of 2nd to 12v.
in other words you have now 3 wires at top, ground, 12v, 24v
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Sunny North Queensland, Australia (the land Down Under)
Steadicam Opp/ Videographer / Photographer, Camera crane, Film maker, events photographer/videographer
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Jamie Glover
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Here is a quick pic to clarify what Trevor means..
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