Anders Holck
03-17-2007, 12:25 PM
Are those RED batteries cheap? A good option?
Just to place them in the universe I have made a chart with prices from a few companies. The range is from the dirt cheap "no name", to the well known brands.
Price wise the RED bricks are pretty competetive, and of cause they have that cool RED logo....
Hope you find it useful anyways:-)
http://holckowen.com/stuff/Batteries.png
Capacity and cut off
Currently there is no info on the power consumption of the red camera.
All Li-ion batteries have a current cut off protection, meaning that the battery has a maximum Watt output before it shuts down.
All the batteries on my chart are above 79W which means that the battery will supply at least 5.4A. I'll assume that the RED won't consume more than this cut off. There is no info on the cutoff of the Red batteries, but we should assume it to be in the range of 75-100W.
For the capacity or total watt hours of the battery package, I have tried to match a set of 4 RED batteries which is 4 x 140 WH=560 WH.
Some have more capacity and some a little less.
If we assume a max consumption of 79 W, 560 WH will last for 6 hours.
That means that for a full 8 hrs day we need to charge.
Chargers
Regarding chargers, I have chosen simultaneous chargers where available. That means that all batteries are charged simultaneously instead of sequentially.
Currently there is no info if the Red charger is sequential or simultaneous. My guess is that it's simultaneous.
It's a great feature to have if you are suddenly in a hurry, like if there has been a power out over night and you need the batteries charged ASAP.
I have also chosen to have a charge output for every battery. That means that all batteries can be charged simultaneously, with no need to change batteries. That is great if you charge overnight as all batteries will be ready in the morning.
Regarding Anton Bauer batteries, they are a little tricky:
The red camera has a V-lock mount so you need an adapter to mount it.
Also only the Dionic 90 has a small form factor, but it's only 90 WH.
Therefore I have made both an example of 4 batteries to match the amount, and 6 Batteries to match the capacity. The good thing about this is that 90wh batteries charge in half the time of 140WH batteries.
The red chargers also include a PSU cable. I have rated this cable to be $150 if you ordered it from a place like productioncables.com.
As you can't order the red charger without a cable (yet?) the red package includes two.
The GMP charger includes a 4 pin XLR PSU cable. So I have just included a price for a LEMO connector, that you manually have to solder on that cable.
Info on chargetime for the different chargers are sparse.
The Global media pro charger will charge all four 160WH cells in 364 mins.
The Anton Bauer charger will charge all six 90WH in 180 mins.
Red prices are from the Red accessory price list.
GMP prices from globalmediapro.com
Other prices from bhphotovideo.com
Other prices in italics from globalmediapro.com
Just to place them in the universe I have made a chart with prices from a few companies. The range is from the dirt cheap "no name", to the well known brands.
Price wise the RED bricks are pretty competetive, and of cause they have that cool RED logo....
Hope you find it useful anyways:-)
http://holckowen.com/stuff/Batteries.png
Capacity and cut off
Currently there is no info on the power consumption of the red camera.
All Li-ion batteries have a current cut off protection, meaning that the battery has a maximum Watt output before it shuts down.
All the batteries on my chart are above 79W which means that the battery will supply at least 5.4A. I'll assume that the RED won't consume more than this cut off. There is no info on the cutoff of the Red batteries, but we should assume it to be in the range of 75-100W.
For the capacity or total watt hours of the battery package, I have tried to match a set of 4 RED batteries which is 4 x 140 WH=560 WH.
Some have more capacity and some a little less.
If we assume a max consumption of 79 W, 560 WH will last for 6 hours.
That means that for a full 8 hrs day we need to charge.
Chargers
Regarding chargers, I have chosen simultaneous chargers where available. That means that all batteries are charged simultaneously instead of sequentially.
Currently there is no info if the Red charger is sequential or simultaneous. My guess is that it's simultaneous.
It's a great feature to have if you are suddenly in a hurry, like if there has been a power out over night and you need the batteries charged ASAP.
I have also chosen to have a charge output for every battery. That means that all batteries can be charged simultaneously, with no need to change batteries. That is great if you charge overnight as all batteries will be ready in the morning.
Regarding Anton Bauer batteries, they are a little tricky:
The red camera has a V-lock mount so you need an adapter to mount it.
Also only the Dionic 90 has a small form factor, but it's only 90 WH.
Therefore I have made both an example of 4 batteries to match the amount, and 6 Batteries to match the capacity. The good thing about this is that 90wh batteries charge in half the time of 140WH batteries.
The red chargers also include a PSU cable. I have rated this cable to be $150 if you ordered it from a place like productioncables.com.
As you can't order the red charger without a cable (yet?) the red package includes two.
The GMP charger includes a 4 pin XLR PSU cable. So I have just included a price for a LEMO connector, that you manually have to solder on that cable.
Info on chargetime for the different chargers are sparse.
The Global media pro charger will charge all four 160WH cells in 364 mins.
The Anton Bauer charger will charge all six 90WH in 180 mins.
Red prices are from the Red accessory price list.
GMP prices from globalmediapro.com
Other prices from bhphotovideo.com
Other prices in italics from globalmediapro.com