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Alexa Mini - lowest battery voltage to run
Posted: Wed Aug 24, 2016 7:11 am
by Steve Conry
We've been shooting on our Mini for a bit now and have had the camera power down a couple times during operation. So far we haven't had any data loss but I have read about the potential to lose an entire card if the camera shuts down due to power loss.
I have been looking around but have yet to find the recommended voltage to pull batteries at. We are using Anton Bauer Dionic HC and 90's, as well as the Switronix Hypercore Slim (75wh).
Thanks for any insight!
Re: Alexa Mini - lowest battery voltage to run
Posted: Mon Aug 29, 2016 11:14 pm
by NateWeaver
The camera cuts off at 10.5V
However, my conversations with John Ritter, who knows Anton Bauer (and other makes) inside and out, you don't really want to pull the batteries down farther than 12.5V
I know if I go farther than 12.5 on my Dionic HC and HCXs, my 2702 charger wants to do a cell balancing "Rejuve" cycle.
Re: Alexa Mini - lowest battery voltage to run
Posted: Thu Sep 01, 2016 4:09 pm
by Jan Heugel
Steve,
you will not loose the whole card in case of a power loss! The data will be there. Only the last clip might not be in best shape.
If that happens, the camera "locks" the card for recording and asks to back up the data/erase the card.
IMG_7651.JPG
Judging by the comment of Nate, it really depends on the battery you are using and kind of knowing how it behaves.
I've asked the guys at
Bebob, our local battery manufacturer. Their batteries switch of at 12V and can immediately be recharged.
So depending on the battery I guess I'd set the warning at around 13V with AB batteries and 12.5V with Bebob?
Best,
Jan
Re: Alexa Mini - lowest battery voltage to run
Posted: Tue Sep 06, 2016 8:27 am
by Steve Conry
Thanks Nate and Jan, I appreciate the responses! And great to hear that I won't lose the whole card. That did seem odd
Take care,
Steve