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Portable Battery Pack for Tempest?

Portable Battery Pack for Tempest?
« on: January 23, 2018, 03:56:48 PM »
I thought there was a thread about this, but I searched and couldn't find it. Does anyone use a portable battery pack with their Tempest? I bought an Op-1 this year so I could make beats on the road and it's been fun and all but I never use it in my studio so I feel like the work I do on it just sits there. If I made some beats on my Tempest on the other hand, I'd be set :)

I'm looking at one of these: https://www.omnicharge.co/

Thoughts? Would one of those omnicharge devices even be powerful enough? (it says selectabe voltage from 1v to 24v, and either 13600 mAh or 20400 mAh. Uh, which honestly doesn't mean much to my brain.
https://soundcloud.com/textureandlight (electronic music from inner space)

Re: Portable Battery Pack for Tempest?
« Reply #1 on: January 23, 2018, 04:13:11 PM »
Hey Trevor,

You might be thinking about the old forum.  As I recall, there were a couple threads on there about batteries.  Hold on, let me see if I can even find the old forum, never mind log-in (smirk).

Yep, here you go:

http://dsiforum.com/viewtopic.php?f=24&t=7214&p=65112&hilit=battery#p64988

http://dsiforum.com/viewtopic.php?f=24&t=5348&p=46041&hilit=battery#p44047

http://dsiforum.com/viewtopic.php?f=24&t=4680&p=37426&hilit=battery#p37426

That's all I could find.  Good luck, the forum crashed on me three times just doing the search.  Aww... Memories (smirk).

Cheers!

Re: Portable Battery Pack for Tempest?
« Reply #2 on: January 31, 2018, 07:23:56 AM »
Thanks John! :)

Ok, I had some electrician friends help me out, and here's what I discovered:

15 V battery pack: http://www.bixnet.com/bp170.html

electrician friend:

"Because your tempests power supply is so inefficient, you put 75 W in and it only delivers 26 to the Tempest. If you can hook up that 15 V one mentioned above, then it would give you six hours. But if you plug your tempest adapter into 120 V on that unit yes it would give you two hours"

So in other words, if you used that above unit and made / had your own cord to connect the two (so you don't have to use the Tempest brick), you'd get 6 hours on a charge. Using the Tempest brick connected to the unit would give you 2 hours.
https://soundcloud.com/textureandlight (electronic music from inner space)

Re: Portable Battery Pack for Tempest?
« Reply #3 on: January 31, 2018, 12:21:40 PM »
I donít understand...If you get this youíll have six hours battery juice for Tempest?And i see your friend says ďifĒ you can hook upĒ...

Re: Portable Battery Pack for Tempest?
« Reply #4 on: January 31, 2018, 12:59:29 PM »
I donít understand...If you get this youíll have six hours battery juice for Tempest?And i see your friend says ďifĒ you can hook upĒ...

Yes, 6 hours if you use a power cord to directly connect the Tempest to the unit as oppose to using the Tempest power supply plugged into the unit (which would only give you 2 hours) . The Tempest power supply is very inefficient in terms of power in/out ratio, but this battery pack does the stepping up/down itself (instead of using a wall wart to do it), so if you get a simple cable that fits into the Tempest and into the same 15v spot on the adapter, that would give you 6 hours.
https://soundcloud.com/textureandlight (electronic music from inner space)

Re: Portable Battery Pack for Tempest?
« Reply #5 on: January 31, 2018, 02:44:30 PM »
Ye but can you ask your friend about the specs of the other cable youíre mentioning so we donít get another inefficient one?Also any stores in Europe selling this?

Re: Portable Battery Pack for Tempest?
« Reply #6 on: January 31, 2018, 09:58:54 PM »
Ye but can you ask your friend about the specs of the other cable youíre mentioning so we donít get another inefficient one?Also any stores in Europe selling this?

I think the cord would have to be a homemade / custom one. Anyone that's a competent electrical person could do it (not me). It's just a power cable with 2 ends on it that are both the little round style (like the end that goes into the Tempest). The actual battery pack unit handles the work that in the wart on the Tempest cord usually does. I know even less about Europe power supply, sorry, but are you asking if that battery pack is available there or the cord?

 
https://soundcloud.com/textureandlight (electronic music from inner space)


Re: Portable Battery Pack for Tempest?
« Reply #8 on: February 01, 2018, 10:58:06 AM »
The 2 links I posted above are the 2 I've been looking at - both ship online so should be available anywhere. No idea about European etc compatibility though

https://www.omnicharge.co/
http://www.bixnet.com/bp170.html <------ this one seems to have more juice and would last longer
https://soundcloud.com/textureandlight (electronic music from inner space)

Re: Portable Battery Pack for Tempest?
« Reply #9 on: February 01, 2018, 01:24:01 PM »
Wow iím loving that omnicharge itís so compact and perfect for Tempie!
How many hours lasts the battery on this one?

Re: Portable Battery Pack for Tempest?
« Reply #10 on: February 01, 2018, 01:36:06 PM »
Wow iím loving that omnicharge itís so compact and perfect for Tempie!
How many hours lasts the battery on this one?

From my friend: "Because youíre tempests power supply is so inefficient, you put 75 W in and it only delivers 26 to the Tempest. If you can hook up that 15 V one (http://www.bixnet.com/bp170.html) right to the Tempest and bypass the Tempest power wart,  then it would give you six hours. But if you plug your tempest adapter directly into the 120 V connector on that unit it would only give you two hours."

It looks like the Omni20 is about 1/2 the size/power of the other one, so the numbers would be roughly half (1 hour going through Tempest adapter wart or 3 hours with custom cable)

https://soundcloud.com/textureandlight (electronic music from inner space)

Re: Portable Battery Pack for Tempest?
« Reply #11 on: February 09, 2018, 05:58:22 AM »
Damn. If I was to buy this, I'd have to be 100% sure it was safe. If it's safe, then I will get one!
Standard studio setup:
DSI Tempest, RME Fireface 800, AKG C4000B and Macbook Pro

dsetto

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Re: Portable Battery Pack for Tempest?
« Reply #12 on: February 20, 2018, 12:51:55 AM »
Please report your results. Good luck.