Jump to content


  • Posts

  • Joined

  • Last visited

Profile Information

  • Location
  • About
    Location sound mixer.
  • Interested in Sound for Picture

Recent Profile Visitors

3,431 profile views
  1. Thank you for your input, as I was simply addressing someone who had indicated that they were not happy with the voltage dropping to 1.2 volts. I am happy to see you agreeing with me about these batteries maintaining a higher voltage. The user of the device who did not care about the voltage dropping to 1.2 on the older style batteries, Nimh, Nicad, etc, would not have this issue on the newer cells. And of course when the voltage drops, the amperage goes up, absent a circuit that subsequently lowers the wattage as the voltage of the cell drops, then heat also goes up. That is why I don't use a main battery system of 12 volts on Nova, because of higher amperage. The other reason being the minimum voltage level of the Nova is reached before the discharge level of the battery pack is reached, thereby leaving unusable power in the battery pack. As far as "Mumbai" , I was simply doing math based on the science.
  2. I didn't mention anything about equipment design. I don't know the "Mumbai jumbo" you refer to and I'm not sure you understand how these cells function. Think of it this way, if there was a piece of equipment, let's call it the Throwtrap 5000, and this device ran on 1.5 volts minimum voltage, at 1.49 volts there is no longer enough voltage to power the 5000. This is what we are discussing here. With that understanding, how long does the cell in question maintain 1.5 volts?
  3. I addressed someone who didn't seem to care for the voltage running at 1.2 volts. I guess the way for you to think about this equation: If you were to measure these 2 different types of cells at 1.5 volts or higher, which cell would provide a longer run time at or above 1.5 volts? There is the answer.
  4. You asked "where do I get this?" and then talk about one being "better". I didn't say one was better or worse because of this, I made the statement that the cells at discussion here would be at 1.5 volts longer than Energizer lithium, and since a depleted Energizer Lithium has 1.5 volts for less time than the battery than the ones in this discussion, that is where I "get this".
  5. Well, if it helps, the batteries we are discussing here have 1.5 volts for a longer period of time than Energizer lithium. I understand your hesitancy with rechargeable AA batteries from 20 years ago, but things change. We didn't have electric cars 20 years ago and needlessly throwing batteries away is not a great thing. Sincerely, Martin
  6. Hello, Well, they still have, according to the site you attached, problems providing the current for camera flash. That is to be expected. The other issue with these cells is that they are 1.5 volts fully charged, and 1.5 volts fully discharged. That of course means that your battery indicators will not accurately reflect how much juice is left, or how much you started with. The current limiting situation with these cells might also mean you could not, for instance, turn on a 742/743 with a Supercmit plugged in, because the cutoff would be reached. So, you would have to unplug the trans, turn the unit on, and then plug the trans back in, that would of course avoid the current surge. But, they would be great in the LA trans, or erx, slate, etc. Sincerely, Martin
  7. Normy , I've seen your setup, a 100 meter cable is not short.
  8. Dan, you weren't wrong to chime in. I was just surprised at how much power it takes to run that cart. 140 watts is enough to run 9 Nova's that are running 72 receivers and 9 zaxnets. As to your question of peak vs. nominal, that doesn't have any effect in my world. I just design the packs for the real world power that my system will need for the amount of time that I will need it. The battery distribution system is another conversation, there I did have to design for max current. I cover that by a lot more than 10 percent. Of course there is no battery distribution sytem on Nova, so I did not need to redesign a smaller sytem for the Nova. Just from memory, I believe Nomad with 4 QRX running was about 24 watts. Nova is now about 15.5 watts, about 36 percent less power. That's what led me to redesigning my battery packs, because they can now have about 36 percent less capacity, yet maintain the same run time. I'm pretty sure you're not a dummy. Thank you, Martin
  9. Mungo, Well of course an RX-4 won't slide into anything, a receiver slides into it. But, how many receivers do you get for the 4 watts on a Sony slide in slot? Thanks, Martin
  10. Fred, I used watts instead of amps, because I think most people on hear would have thought that I was deriving the amp figure from a 12 volt system, which I don't run and have never run. Mine has always been a 16 volt system. So, if I had listed amperage instead of wattage, I could have mislead someone with what would be a lower number for my setup. Less Amps equals less heat. The current drawn on my DC mixer is not constant, as the voltage goes down, the amperage goes up. This is why I would use watts. Anyone who knows their voltage can then calculate the number that is appropriate to their own setup. My original post, this one, wasn't about battery packs. I was just measuring some equipment because I was curious how much power they needed. For instance, an ERX3TCD uses 1/3rd of a watt. I think I was surprised how low that was. My comment about Nova using 15.5 watts with 2 MRX414's running 8 wireless receiver channels did not have analog inputs turned on, because few people will have more than the 8 wireless running, so it didn't make sense to give a value that would not be used much by many people. I have been using lithium packs with my equipment for many years. I have never had a problem. I have never powered my equipment with anything other than lithium packs. Everybody is different, this is just how I prefer to do it. I like a pack that will run a nominal setup until lunch and weighs very little, and thanks to building it myself, I can make it into a shape that will fit well into the Nova bag. Thanks to Glenn and Howy, it now appears, that I will be able to run 8 wireless and not do a battery switch until after lunch. The only wildcard that will be new with Nova is the fan setup. I can't know what that is going to do to battery consumption in the real world. I think your english is just great. Thanks for your input. Martin The Zaxcom RX-4 running 4 receivers is 5 watts total, 1.25 watts per wireless receiver, if you want to think of it like that. Thank you, Martin
  11. Dan, I wasn't questioning the way in which you arrived at the power figure, I was just surprised at the number on the wattage. Thank you, Martin
  12. Dan, 140 watts? Wow. So you used an ammeter on the AC line which has given you that 1.2 amp figure? Thanks, Martin
  13. Hello all, While I was planning the building of my battery packs for Nova, (which I think nobody cared about, ha) I was testing to see how much wattage various components use so that I could build corresponding battery packs. Does anyone care to know what pulls watt? Pun there. Maybe I could list the wattage for various components? Thank you, Martin
  • Create New...