I have to wonder if that big 'ol retina display is what’s causing the short battery life, Karlos.
I’ve had the app running for 5 hours on my iPad 2 now, started at 92% battery, now at 44%.
2 tracks looping with FX locked on
Audio 6 connected
Screen brightness at around 30%
Wifi on.
6hrs 15mins now… still got 30% left…
EDIT: just read your first post.
Hmm, interesting.
I hope I can get someone with a 4 to do the same test cus your results piss on mine
As above mate:
Running Traktor DJ, obviously… 
The iPad 2 is 16gb, bought 4 months ago refurbished from Apple.
It’s the second iPad 2 in my household, and the kind of battery life I’m getting in this test is what I would have expected. I only did the test tonight because your results were worryingly short, and I thought I’d better check for myself before trying the app live next week.
You don’t have 3G or LTE switched on, do you? That would cause a hit, I’d imagine, especially as the app syncs with Dropbox fairly regularly.
No mate, I had Airplane Mode on and I have every conceivable notification turned off, all apps closed and all mail etc assigned to manual. Although Airplane mode disables everything anyway.
Damn i need to speak to Apple tomorrow to see if this is normal. I’ll also ask the other testers at NI to do the same test and compare results.
Im kinda hoping that its a duff iPad now. I would be happy with just 6 hours especially with the Audio 6 connected (i havent even tested with that yet).
Thanks for the info Mojaxx, worrying but helpful… appreciated.
Try with min brightness Karlos, you don’t need more in dark environments anyways. Try your next run off a fresh boot as well.
Yeah, definitely check your screen brightness. I keep getting to gigs and having to turn the brightness down when using Lemur because it’s too bright in a dark club. You really shouldn’t need it at more than 25/30%.
The thing with TDJ, it’s clearly not even that processor intensive. After running it for 6hrs my iPad wasn’t even warm, whereas I’d expect it to be after an hour of, say, Infinty Blade. You should DEFINTELY be seeing more than 5 hours IMO.
Will do… but surely I shouldnt have to reduce brightness too much to get better results than 60% of what Apple claims (at best) the battery can last for.
I mean 10 hours is the claim and this is backed up by impartial reviews. I should at least be getting 5 or 6 hours under these conditions (everything off but Traktor DJ)..?
I have the iPad in a Ballistic Tough Jacket as well. Charging it over night and will test again in the morning with reduced brightness, fresh boot and without the jacket (although It never gets warm anyway).
Yep, something is wrong.
If I dont get better results tomorrow, im hoping over to the Apple store. They usually take one look at my registered products and go out of their way to help (stupid Apple Fanboy).
Ok todays test is showing much better results.
Reduced the brightness to 50% and ive lost 15% battery in 2 hours.
WOW what a difference. Still its a bit shitty that i cant have the retina screen used as it should be but I think I can find a compromise around 70% and maybe get a good 5 hours which will get me through my gig.
Spoke to a Dev at NI and he has had the same issue. iPad 2 goes much longer than iPad 4.
Cheers lads.
70% brightness? Are you wearing sunglasses? 
I’m not surprised that the iPad 2 is doing better in tests, that retina screen does pull a lot of GPU.
And, as I said, TDJ really isn’t taxing the iPad that much. I guarantee the only reason it won’t run on an iPad 1 is the iOS 6 requirement. DJ Player works perfectly well on the 1st gen apparently.
Your eyes will thank you later. With 70% you were probably getting a tan form your iPad. 
I’m trying a few side roads to get it to load in iOS 5, no success so far.
Hah made me chuckle..!
Yup Traktor DJ is iOS6 and above.
Brilliant… LOL.
I should have added that I have a screen protector on the iPad to its not the glare isnt that bad but I am getting used to a less bright screen.
I havent heard anyone getting around the iOS6 limitation.
I have two quick questions (and my apologies if this has already been answered in the previous thread discussions):
Does the ipad app play AIFF files that are prepared on our laptops and then sync’d via iTunes? I’d rather not use MP3 format if I can avoid it.
Does the app support the ability to assign two stereo outs via a soundcard? I’m thinking of getting the new Apogee Duet for iPad that charges while also being in use. Since it has four outs, I want to assign one stereo out from one deck and one stereo out from deck b and use my DJ mixer to be the mixer of the two tracks (I have a Xone
B4).
Thoughts? Thanks in advance.
Rob.
The iPad will sync and play AIFF files up to 24bit/48khz.
Multi-channel output definitely works with NI’s supported interfaces but I haven’t heard reports about others yet.
You won’t fit many AIFF files on an iPad though… I’d suggest converting to ALAC personally. In general really!
Yes TDJ plays AIFF tracks although I have not prepped one and imported the metadata. I just tried one to see if the format works.
Since this audio card is not on the market yet (in the UK) Im not gonna say yes but, I have a a loooong good look at it and I assume it will work but NOT in external mixing mode in the current version of TDJ . I hope that feature will be implemented in a version soon.
I have been thinking of getting one, i even called a store about availability and they say another 2 months and about £500 which is way too expensive even if it does charge the iPad.
You USA guys will get it for a much better price.
If the UK price comes down I may get one. Charging the iPad and providing audio seems to be like the hunt for the Holy Grail.
I apologize if this has already come up.
It sounds like the decks have keylock on. Is there any way to turn this off so it sounds like tracks are pitched on a turntable/CDJ?
Also, I swear I read and saw Flux mode (not Freeze mode), but can’t find it for the life of me. Is this in TDJ or am I making things up?
Even NI interfaces will only give you Master and Headphone output. True external mixing isnt implemented yet (but I think you know that anyway).
As for non-NI devices, yes they work if they are Class Compliant. My A&H K2 works just dandy. Just wish there was even a basic midi functionality (transport/volume/EQ) then the K2 would be awesome with TDJ. Worth noting that the K2 does not have a power supply but it must be on a powered USB hub.
Just wanted to give a quick update…
Did a bar gig tonight using just Traktor DJ. A little over 4 hours.
Used the Audio 6, sent the cue to one channel of a DJM-800 and the master to another, then left the cue assigned to one deck and xfade on the other, so I was able to use external mixing properly.
Started fully charged, in airplane mode, 60% left at closing time.
Wouldn’t want to replace my full rig with it, but it’s the best portable backup solution I’ve ever used, for sure.