8 Hours on battery?

soren k jensen

soren k jensen

Well-known member
I plan on doing timelapse/interval recordings of children's days in school. The idea is to follow evererything they do for full days. I'll have the camera on a tripod and then follow them as they move from place to place also, so it'll be a mix of static and moving (chaotic) timelapse. Only problem is, I cannot log a 220 Volt power chord along when moving around, I can't change from battery to power quickly, and not power down, when the camera sits still, and no battery lasts that long.
Any ideas?
 
I would buy a block battery and an inverter. It's a bit big but it would power the camera all day. I've used them for the HVX and also monitors. Some are cheaper than others.. Some come with inverters already built in. You can get some home built ones here for 100 bucks.. then maybe 200 for the inverter. and it would be great to use later for monitors and sometimes for small lights too. Not sure how it translates in Europe but works pretty well here in the States..
 
What about the Anton Bauer Elipz?
home


or one of theese http://www.globalmediapro.com/do/product/1806 with a 7.2v power regulator
 
I have been looking for a battery that could provide power on a small production cart (Magliner with shelves). It would power a small HD monitor (around 20'), a laptop and and external hard drive for card dumps, possibly a small light for night work. All that stuff wouldn't be on all day but looking for something bigger than camera batteries. I know there are setups based on "gel" batteries or car batteries with inverters built-in but I don't know any brands.

Any recommendations?
 
If you are doing timelapse, then you should be able to swap out batteries between shots. Powering the camera off, switching batteries, and resuming shooting shouldn't take more than ten seconds, and given the chaotic nature of kids on timelapse, nobody is going to notice.
 
soren.. It just converts the DC power from the batter to AC power for the camera... or atleast that's my simpleton explination. I'm dumb at this crap... but it's what I kind of assume
 
The downside to this is the inverter has its losses, it is about 60-75% efficient; the same is true for the AC Power adapter. By daisy chaining an inverter and an adapter, you would be wasting almost half of the battery charge due to losses. In other words, a large 10AH battery would actually give you a run time of a 5-6AH battery. Also messy cabling is not a good thing. A much cleaner and efficient way to do it is using a DC-DC converter, that is capable of taking 12-14V in from a battery, and delivering 7.2V to the camera. We make them, but also a few other manufacturers, like Anton Bauer and such. AB has the converter integrated into their Gold Mount plate. HTH
 
Yes, it is exactly what it is used for. You have 2 choices to plug your battery into the converter - 4 pin XLR or a small 2.1mm DC jack. I would estimate that your 95wh battery will power the HVX for over 5 hours. The HVX camera uses about 15W, the converter is about 90% efficient. You need to devide 95Wh by 15w, and take 90% of the result to account for the conversion losses.
HTH
 
awesome.. someone who knows what they are talking about. Alex, do you have a price guide online for this stuff?
 
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