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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 :)

Scarlet Side Handle Battery test

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Daniel Kunz

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I'm running a few test here to show what battery time you can expect from a Scarlet-X EOS-Mount:
External devices attached:

Side Handle
5.0 Touchscreen LCD
Tamron 17-50 2.8

Test were all done indoors @ approx. 72°F or 22°C

First test:
Battery fully loaded
38:22 from bootup to automatic shutdown
No recording, just a black shading calibration.
Fanspeed: 60% (idle)
I didn't expect that much.

Second test:
Battery fully loaded (96% displayed)
34:40 from bootup to automatic shutdown
Recording 4KHD 25fps at RC6:1 + 20 Touch-to focus
Fanspeed: 35% (recording)
@13 Minutes in recording Fan jumped up to 100% for 5 seconds.

Third test:
Battery fully loaded
37:06 from bootup to automatic shutdown
Recording 25 short clips @4K 25fps at RC 6:1 +20 Touch-to focus
Fanspeed 30% (recording)

Fourth test:
Battery fully loaded: (99% displayed)
34:25 from bootup to automatic shutdown
Recording 1 clip @3K 48fps RC 7:1 + 2 Touch-to focus
Fanspeed 30% (recording)
@14:00 fan startet running @100% for 10 seconds
@17:00 fan startet running @100% for 10 seconds
@19:41 fan startet running @100% for 10 seconds
@22:20 fan startet running @100% for 10 seconds
then the 64GB SSD was full, formatted it and recorded again.
@26:30 fan startet running @100% for 10 seconds
@28:50 fan startet running @100% for 10 seconds
@31:05 fan startet running @100% for 10 seconds


Conclusion for this test: don't lower your fanspeed below 35% (recording) for long takes. The fan will ruin your audio and your talent's concentration.

Fifth test:
Battery fully loaded: (100% displayed)
37:48 from bootup to automatic shutdown
Recording 1 clip @4K 25fps RC 6:1
Fanspeed 40% (recording)
NO RED PRO 5.0 DISPLAY (display disconnected after settings were set)



Charging the battery (Europe 220V):

First Test:
2:15:00 from 0% to 99% (displayed on camera after bootup)
Second Test:
2:17:00 from 0% to 99% (displayed on camera after bootup)
Third Test:
2:16:00 from 0% to 99% (displayed on camera after bootup)
 
Last edited:
Thanks for the tests, Daniel. 35 minutes is quite good, I imagine that this result can be improved once the power management is enabled in a new firmware.
 
Daniel Kunz said:
I'm running a few test here to show what battery time you can expect from a Scarlet-X EOS-Mount:
External devices attached:

Side Handle
5.0 Touchscreen LCD
Tamron 17-50 2.8

First test:
Battery fully loaded
38:22 from bootup to automatic shutdown
No recording, just a black shading calibration.
Fanspeed: 60% (idle)
I didn't expect that much.

Second test:
Battery fully loaded (96% displayed)
34:40 from bootup to automatic shutdown
Recording 4KHD at RC6:1 + 20 Touch-to focus
Fanspeed: 35% (recording)
@13 Minutes in recording Fan jumped up to 100% for 5 seconds.
Click to expand...

Nice :) Thanks for the tests ... could you try doing a 3K at 48 fps test too to see how long it lasts ?
 
Is it possible to turn of the monitor. That could probably save a lot of power, and you might not need it on if you're recording a long take like a timelapse.
 
Joseph Coleman said:
Is power management a confirmed feature that will be on later builds? I never saw any thread of that, just curious if i missed something?
Click to expand...

Yes, Jarred has stated several times that power management is coming. I don't expect miracles from it, but maybe it can extend a single Redvolt's life to something like 45 minutes in a real production environment (usually you're not shooting continuously for 34 minutes).
 
Oh, sorry

Yes i am running Firmware 3.0.0
I will test it recording 3K @48fps
and i will test recording 4KHD @25fps without the screen attached.
 
Given the fact that the camera right now runs at full power so to speak (without the power management) and the only thing that varies is the fan speed - I actually expect a lot from the power management. I would not be surprised if we ended up getting 1hr+ from the REDVOLT...

Peter
 
Maybe a stupid question but ... if you had 5 or 10 minutes between two takes, would you shut the camera down in between them ?
 
rod otaviano said:
Maybe a stupid question but ... if you have 5 or 10 minutes between two takes, would you shut the camera down in between them ?
Click to expand...

I think that heavily depends on the startup time of the camera ...
 
rod otaviano said:
Maybe a stupid question but ... if you have 5 or 10 minutes between two takes, would you shut the camera down in between them ?
Click to expand...

I would, if a DP doesn't need it to adjust framing or anything else before the actual take.

It's not a common habit on sets though, usually the camera just keeps hanging in there powered on between takes, powered by "endless" (meaning there are 5 of them rented and they are 160W each) V-mount batteries.
 
i did a test too, I filmed, messed into the settings, slowmo footages, 4k, i shutdown the camera twice and power it again. It was around 35mn.
The first time i shut it down and power it again, i lost 1% of power. But the second time the redvolt went from 11% before shutdown to 3% after powering it up. Weird.
I'm happy with the fact that it lasts 35mn though, filming a lot and changing the settings a lot.
 
Last edited:
rod otaviano said:
Maybe a stupid question but ... if you had 5 or 10 minutes between two takes, would you shut the camera down in between them ?
Click to expand...

I attempt to stay frugal with battery use on set. If there's a predictable 5 minute downtime and there's no reason to peep through the viewfinder I'll absolutely shutdown. I have a hot key on the side handle just for this.

Some days though, and largely depending on the set/crew, the camera just has to stay on for each setup. Just depends.
 
Updated, disconnecting the display gives you about 3 more minutes of recording time. Not that much. and you don't see anything. You can't even format or eject your media correctly without the screen. So not really worth it. But setting up the fan to 40% during long takes is extremely useful. The fan didn't kick in for me. But your experience may vary.
 
Last edited:
Daniel Kunz said:
Updated, disconnecting the display gives you about 3 more minutes of recording time. Not that much. and you don't see anything. You can't even format or eject your media correctly without the screen. So not really worth it. But setting up the fan to 40% during long takes is extremely useful. The fan doesn't kick in no matter how long you record.
Click to expand...

I don't agree. I've had my fan go to 100+ percent when recording at 40% fan.
 
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