Ross, a question on that Duracell portable power battery

rickryan.com

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Dec 9, 2009
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It appears that I'll be using my Duracell for the first time this coming weekend. Just getting a little nervous about a couple of things;

1) Running a single QSC K10, mixer, wireless and laptop. How long would you guess that battery will support this rig?

2) When the battery gets low on power, does it have an alarm? If it does, I need to open it up and disable the speaker.

Thanks in advance.
 
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Albatross

DJ Extraordinaire
Sep 7, 2016
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When I have run that battery for a ceremony, I have used it on a similar powered system to what you're describing. Normally a Yamaha MG10, 2 wireless mic receivers, and a Bose Compact. Running a half hour prelude, and about 20-40 minutes of actual ceremony time... I've never come close to the end of it's range.

I have used a similar battery (but not the same one) and gotten more than 2 hours out of a Bose Compact and a wireless receiver. It still had 30% left when I shut it down for the night.

Both of those are anecdotal... but I'd assume you get at least an hour, and likely closer to 2 on that rig depending on how hard you're running the music.

I don't know if it has a warning... I probably should have tested that. But the fact that it normally has 50% power left when I'm done means I normally don't push it anywhere near the end of it's battery life.

If you're really nervous... throw it on tomorrow with an Mp3 player running at home and see how long the battery lasts.
 

Cap Capello

Always @ Ur Service
Dec 14, 2006
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Help me help you. What is the wattage rating of each piece of your equipment that will be running simultaneously?

This is the best guess without confirmed specs.

I did notice on one set of specs, the OSC K10 is a 1,000 watt speaker. Assuming your mixer and mics draw less than 100 watts combined, that gives you about 1,100 watts +/- of required juice. That Duracell is rated at 1300 watts, for one hour of operation, therefore, your juice source will last a bit over an hour at full draw (unrealistic but a great worst case scenario measurement).

The Bose Compact is rated at 165 watts (the beauty of a line array that provides nearly the same SPL as a conical speaker rated at 4 times the watts as the Compact.)
 

rickryan.com

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Dec 9, 2009
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Help me help you. What is the wattage rating of each piece of your equipment that will be running simultaneously?

This is the best guess without confirmed specs.

I did notice on one set of specs, the OSC K10 is a 1,000 watt speaker. Assuming your mixer and mics draw less than 100 watts combined, that gives you about 1,100 watts +/- of required juice. That Duracell is rated at 1300 watts, for one hour of operation, therefore, your juice source will last a bit over an hour at full draw (unrealistic but a great worst case scenario measurement).

The Bose Compact is rated at 165 watts (the beauty of a line array that provides nearly the same SPL as a conical speaker rated at 4 times the watts as the Compact.)
I've put a kill-a-watt on my ceremony rig and averages 100-125 watts total draw.
 

DJ TJ

DJ Extraordinaire
Oct 20, 2013
1,749
These are cheap consumer grade units. Go to any electronics recycling place and you will see numerous types of these units that have failed and are being disposed of. It's usually not the batteries that fail but the cheap circuit boards. I wouldn't trust anything mission critical with them without buying two in case one fails.

You won't do that though as you've already shown in the past that you're too cheap to buy or even rent dual generators for backup.
 
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rickryan.com

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The Duracell handled my ceremony like a champ. Unbelievable how light it is. I'm curious, however, whether I actually had it fully charged. Do you have to engage the "AC power on/off" button while charging? Reason I ask, I thought I'd topped it off before leaving the house but as soon as I turned it on the first green indicator went out (it has 2 green, 1 yellow, 1 red). It made me nervous enough that I pulled my van close, hooked up an inverter to its battery and ran a 50ft extension over to my ceremony site as a backup. As it turned out, the last green indicator stayed lit the entire time and everything worked perfectly. Just kinda scary for a first time on a new piece of gear. Thanks again, Ross. This thing is a real back saver.
 

Proformance

DJ Extraordinaire
Nov 6, 2006
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I did notice on one set of specs, the OSC K10 is a 1,000 watt speaker. Assuming your mixer and mics draw less than 100 watts combined, that gives you about 1,100 watts
That's the amp's acoustical output stage, not the electrical input requirement.
The K-10 is going to draw around 2 amps in typical use.
 

Albatross

DJ Extraordinaire
Sep 7, 2016
4,184
The Duracell handled my ceremony like a champ. Unbelievable how light it is. I'm curious, however, whether I actually had it fully charged. Do you have to engage the "AC power on/off" button while charging? Reason I ask, I thought I'd topped it off before leaving the house but as soon as I turned it on the first green indicator went out (it has 2 green, 1 yellow, 1 red). It made me nervous enough that I pulled my van close, hooked up an inverter to its battery and ran a 50ft extension over to my ceremony site as a backup. As it turned out, the last green indicator stayed lit the entire time and everything worked perfectly. Just kinda scary for a first time on a new piece of gear. Thanks again, Ross. This thing is a real back saver.
The AC On button does not need to be engaged during charging.

I experience similar behavior with my unit. Almost as soon as you turn it on, that first battery indicator will go out. But the second one takes a very long time. I think the meter is just calibrated to be very sensitive and only show the 4th light at truly 100%. Anything less and it will cut out.

But I'm glad it worked well for you! I've used that one and similar ones for years and they've been very helpful for me.
 

nextgen1

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Sep 23, 2006
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This is one of the reasons that I bought the Bose S-1 Pro and the JBL Eon One Pro. Both of them have their own power so that would be one less thing I have to worry about plugging into the Duracell. I do have to say that I bought all this stuff to go power free if I need to. But I have lacked the balls to do it as of yet. I'm an over doer so its hard for me to go light or easy on a ceremony.
 

Albatross

DJ Extraordinaire
Sep 7, 2016
4,184
This is one of the reasons that I bought the Bose S-1 Pro and the JBL Eon One Pro. Both of them have their own power so that would be one less thing I have to worry about plugging into the Duracell. I do have to say that I bought all this stuff to go power free if I need to. But I have lacked the balls to do it as of yet. I'm an over doer so its hard for me to go light or easy on a ceremony.
Tig beat me to it.

Those powered speakers have never appealed to me because I need power to the wireless mics. If I was just doing music... those would be a great solution.
 

rickryan.com

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Tig beat me to it.

Those powered speakers have never appealed to me because I need power to the wireless mics. If I was just doing music... those would be a great solution.
Really, as small and lightweight as these new battery units are, I see absolutely no reason to want a self-powered speaker. That one battery will power speaker, mixer, wireless and laptop. Easy, easy.
 
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This is one of the reasons that I bought the Bose S-1 Pro and the JBL Eon One Pro. Both of them have their own power so that would be one less thing I have to worry about plugging into the Duracell. I do have to say that I bought all this stuff to go power free if I need to. But I have lacked the balls to do it as of yet. I'm an over doer so its hard for me to go light or easy on a ceremony.
I agree...failure is not an option!
 
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steve149

Veni, Vidi, Lusi
Staff member
Sep 26, 2011
35,025
Prospect, CT
The only issue with the self powered speakers is that they have no way to power accessories (mics, etc).
I don't know why ... my Anchor Liberty 4500 battery powered speaker (about 15 years old) has a 12v output on the back. I made a jumper to my AT 3000 receiver so it can be powered. Every battery speaker should have at least a 5v USB output. Maybe we can start a petition. :)

37368
 
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