iPhone 5 DIY battery replacement, warranty void?

Hello everyone,

I have a black iPhone 5 16 GB CDMA model and it was working fine untill recently. I was charging my phone, and then i moved downstairs so i took my phone plus cable with me. Olugged it in my PC and suddenly it wasn't charging anymore! I took my wall plug and got the same problem so i turned my phone down, i only had 4% left and figured i would be better off with little charge than with no charge at all.

When i plugged my phone in again after powering it down i got the 'charge your phone screen' with the wall plug sign and electricity. The battery on the screen blinked 3 times and then turned black. I looked on the internet and this means that it isn't charging, but apparantly it does recognize the lightning cable. I tried with another cable and with a higher powered iPad wall plug but the same problem occured.

So here comes the problem, i am still under warranty BUT my phone is jailbroken. Normally i wouldn't have any problems with warranty by just doing a restore begore sending it in, however i can't charge my phone and therefore can't perform a restore before i send it in.

So I figured, hey, i just temporarily change the battery, perform a restore (hoping that my computer will recognize the phone, which is actually a second point of interest) and then put the old battery back in to bring it in for warranty. Because i couldn't find any warranty stickers orso in the guides to replace your battery i though that Apple wouldnt be able to notice.

I want to be completely sure though, and thats why my question is 'can Apple tell that i replaced my battery temporarely and will it void my warranty? Or another question, what will happen if i just give my phone jailbroken to them? I am not able to charge it so maybe they're not to and will replace it?

Thanks in advance!