Modifying U310 - SSD, battery, NFC, fan

Question

Hello!I want to start bit of a discusion.Getting the machine:
In 2012 I bought U310 from reseller in Slovakia. The machine came with 3 dead pixels (not so good), but the shop had replacing policy for displays with 3 and more dead ones (good). New model had just one dead pixel and after few seconds of pressure to the screen it fixed itself (thanks God). That was the story, how I get fully functional lenovo IdeaPad U310.
Oh funny thing! The warranty was void when I bought the laptop. The sticker on one of the screws was already torn to pieces, when I firstly opened the machine (after a year or so). UEFI dualboot hdd+ssd:First thing to do with 500GB HDD and 24GB SSD? RapidCache? No. UEFI dualboot. Pain in the astorage.
Who want to read more: http://superuser.com/questions/620336/how-to-make-grub2-chain-boot-win8-after-upgrading-fedora18-to-fedora19So this time Windows Server 2012 R2 has its bootloader on HDD and fedora 20 has grub on ssd. It's simple and upgradable. Even windows updates won't kill this setup. Function keys instead of media keys+some other things:This one was really dangerous and I really risked bricking 760€ machine at that point. I really don't want you to do this to any of your computers. I had luck. So basicly I flashed U410 bios to my U310.. And it worked. https://forums.lenovo.com/t5/Linux-Discussion/Installing-Fedora-17-on-U310-i7-power-button-wifi-noise-problem/m-p/927429 What to do now?
hdd+ssd out, SSD in:
Besides the noisy fan (later) the 500GB 5400rpm hitachi HDD is noisy and rated at 2,5W power. It was pretty good solution in 2012 (I liked it much better than the "SSHD" hybrid thing), but it's 2015 and you can get pretty decent mSATA even 256GB SSDs for good prices. So I am going to sacrifice half of the hdd storage in favour of fast and efficient ssd (data will be on NAS). Power will also be saved. SSDs have similar power consumption, so changing it for another will not affect consumption. But loosing HDD will surely improve it. (also the noise)
I bought second hand msata Samsung PM851 256gb ssd (seller just pulled it from other brand new machine and is selling it half priced) I will get the hdd out, install new ssd and try dualboot. The dualboot will probably be harder than hdd+ssd one.
Do you have a good way to perform a dualboot install on uefi with single ssd, that will survive windows updates? I will be very happy to see that
Bigger battery:Yeah I know.. Never use other battery packs than the one for your laptop. I know, lithium is fire, lithium is death!
Anyway.. After getting out the HDD there will be more space. I could get bigger battery there right?
Let me see U310 has 3cell 11,1V 46Wh 4160mAh battery. I can not simply add one cell to that battery pack that is impossible.
Can I get a U410 battery there? 4cell 7,4V 59Wh 8060mAh:Not so simple.. The voltage difference is too big here.
But question: Is there anyone, who is more familiar with the actual design of the motherboard and its power supply  circuits of U310 and U410? That would be awesome to talk to someone, who can provide us these information. Is there any chance the power supply circuit will cope with 7,4V from the battery pack instead of default 11,1V? Like, U310 and U410 seems so similar in HW design, that onboard power supplys could be the same. Connectors and pinouts of these batteries are the same. That would be awesome to just plug the U410 4cell battery to U310 and go. (It will probably be not so easy..)Less dangerous option is to find slightly bigger 3cell or 6cell lenovo battery of 11,1V that can be fitted inside.
What do you think about this? I know it is not a best idea, but still it is a really good question, isn't it?
NFC inside!?:
Well who would not want tu use Android beam with his computer? So I bought cheap ACR122U USB NFC Reader and I will try to fit it inside of the laptop. The circuit board with the antenna is pretty thin. The only problem is the connection. I will probably need a usb hub inside of the case (possible with space from late HDD). I could use the single USB2 on the left side to connect usb hub to. Then connect the reader to one port of the hub and the actual notebooks usb2 connector to a second port on the usb hub.
This would hypothetically work.
Fan...:
Inefficient insufficient noisy piece of... you know it.. That thing cant even cool the i7 version below 40°C at 700mHz. The biggest problem is probably too small space and no airflow, so the fan spins but can not suck any more. So it simply sucks, suckn't it? Thermal paste change didn't help. There may by a solution of changing the fan for one from another model.. but I need to find good replacement. I haven't found it yet.
Well this will be all for now. I hope I didn't bore you. If you have something you've done yourself share, please! I will be very happy to see what is going on there If you know something I am trying to acheave (especially the battery!) Please! Help. Thank you for yor time. I hope you will like this.

Answer 1

SOLVED:
so.. I really didn't understand how.. but, I slovet my problem.
  firstly I installed windows 7 to flash the BIOS I flashed it (http://forums.lenovo.com/t5/IdeaPad-Y-U-V-Z-and-P-series/how-can-I-get-my-money-back/td-p/920647). So now there is bios from U410 installed on my U310 (version 15). (I like this better, because upper keys functions as F1 F2 F3... and with Fn + F1... they have functions(volume...) U310 bios had it swapped)
  secondly I installed Fedora 17 (UEFI mode, GPT disk tables)
  thirtly I needed to install wireless adapter firmwares (yum install iwl105-firmware.noarch iwl135-firmware.noarch iwl2000-firmware.noarch iwl2030-firmware.noarch) I installed all of them. AND voila, SOLVED... I don't know how, but button is acting as supposed, fan is cooling continually and my wifi is working also.
IMO: EFI and OS are more connected than in BIOS, so badly installed firmwares/drivers can cause even hardware problems.
Thank you all, for help.
(And Fedora 17 has more battery life, than win8)