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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Wait a second guys..... Power supply solution.

I'm looking more to not get the side handle and batteries to save me an extra $1,300. So with my budget only allowing the camera to be powered solely on the ac power cable, it seems like a very cheap option to buy one of these portable power sources to be able to shoot outdoors.
 
This is my solution for portable tethered power for remote locations. http://www.amazon.com/Xantrex-802-1500-XPower-Portable-Powerpack/dp/B00005RHQQ

I've got three of these carts to run multiple cameras and monitors plus any other needs. The beauty of these is that you can easily connect more 12 volt batteries to add to available power. But read the customer reviews. Some have had shipping/other problems in the past. All three of mine have had no problems, but I haven't had to use them extensively.
 
How's the testing coming, Carelton, any news?

Carelton Holt said:
Pardon the shameless plug here, but in addition to our production company, we have a small manufacturing company that makes Jibs, Sliders and in reference to this thread Portable Battery Supplies that we are hopeful will be able to provide Power to our Scarlet when it arrives next week. We package a high quality Medical Grade Sealed Lead (SLA) battery (either 18AH or 35AH) in a Pelican Case that we have used for a number of applications including: cameras, Monitors, Hot Head on a jib, teleprompters, LED lights and Gyro Stabilizer mounts. The case has 4pin XLR connectors along with a Cig Lighter port to run a variety of devices. We often run an AC inverter for laptops and other small 110V devices as well.

Both batteries have a continuous out capacity in excess of the 60watts that are needed to power the Scarlet, but we just want to do a little testing to confirm. Being lead batteries, they are not light (13 & 25lbs respectively), but on a jib, dolly or sticks in a more static situation are extremely handy in many applications.

FYI, battery consumption is not a linear thing, but rather a geometric curve. The amp hour rating is based on one amp of draw, so if a device draws 5 Amps (like the Scarlet), a 15 AH battery would not power the device for three hours. More like a little over two hours would be realistic. And beware of lead acid batteries much below 15AH as the 60W draw from A Scarlet could easily and quickly drop the voltage below the 11.5V cutoff for the device, well ahead of the battery actually being exhausted.

We will gladly offer a discount to RED users if anyone is interested after we complete testing on our end. They can be seen at www.t-jib.com
Click to expand...
 
Carelton Holt said:
Pardon the shameless plug here, but in addition to our production company, we have a small manufacturing company that makes Jibs, Sliders and in reference to this thread Portable Battery Supplies that we are hopeful will be able to provide Power to our Scarlet when it arrives next week. We package a high quality Medical Grade Sealed Lead (SLA) battery (either 18AH or 35AH) in a Pelican Case that we have used for a number of applications including: cameras, Monitors, Hot Head on a jib, teleprompters, LED lights and Gyro Stabilizer mounts. The case has 4pin XLR connectors along with a Cig Lighter port to run a variety of devices. We often run an AC inverter for laptops and other small 110V devices as well...

... quickly drop the voltage below the 11.5V cutoff for the device, well ahead of the battery actually being exhausted.
Click to expand...

Your SLA batteries are listed to have a nominal voltage of 12V, doesn't that mean under load they will go down to 10V and below, so basically running a Scarlet they'd likely last only a few minutes and then hit 11.5V and Scarlet would have to shut down while the batteries are still mostly full? You mention this is an issue for small SLA batteries, but isn't it a concern for your product as well? Or are they regulated?
 
Btw I've tested these on my Scarlet and I get 2hrs 45min with them with redmote and SSD attached:

http://www.ebay.com/itm/150wh-V-loc...s_Chargers&hash=item27c0046938#ht_2349wt_1185

I just bought two more of them (The first two I bought in December were only $255, looks like the price is going up)

subtract $30 without charger, but these seem to be the lowest priced v-mount batteries anywhere especially with the travel charger which seems to cost $100-200 alone anywhere else. With a D-tap to XLR cable and DSMC to XLR cable you can use these to power the camera without even having a plate (I use the Dyna V-mount plate that also gives you regulated 12v 7v and 5v outputs for accessories).

Also, I've plugged the Scarlet AC adapter into my kill-a-watt and it looks like Scarlet pulls 50w in idle with an SSD in and 55w with a redmote charging on the back. DC draw may be a bit less than this since this the AC adapter probably loses at least 10% power in the AC-DC conversion.
 
Hi Elsie,
Have you tried this with an EPIC? how long does it last?

Elsie N said:
This is my solution for portable tethered power for remote locations. http://www.amazon.com/Xantrex-802-1500-XPower-Portable-Powerpack/dp/B00005RHQQ

I've got three of these carts to run multiple cameras and monitors plus any other needs. The beauty of these is that you can easily connect more 12 volt batteries to add to available power. But read the customer reviews. Some have had shipping/other problems in the past. All three of mine have had no problems, but I haven't had to use them extensively.
Click to expand...
 
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