Lithium batteries should not be bent, folded, spindled, mutilated, manipulated, shape shifted, or used in any process that involves changing the case's shape. The insides of these batteries are lined with metal plates (I forget what material specifically) that can separate, break and otherwise be damaged. Plates that aren't supposed to touch can also come in contact in cases of extreme deformation.
Will the battery still work? It may or may not, only way to know is to measure voltage or try it. Just be careful! There is a fire hazard with severely damaged lithium batteries, just youtube "lithium battery explosion"...but of course those are extreme cases and go long past the point of noticing "hrmmm, something wrong here".
The flex cable replacement depends on the severity of damage. Did you cut through any of the traces? Is this cable also severely "molded" to the point where it may have broken the traces?
My PERSONAL suggestion would be to just grab both if you can. It will save you time and frustration later! Good luck.
I repair, refurbish & restore iPhones & iPads & iPods. I taught myself. So the learning curve was not forgiving. I have now done over a dozen iPhones and 7 iPads. I have the iPhone 6 too, 1st gen/model. It's approaching 2 years come August & im ready to upgrade, exchange whatever. But my battery had become dreadful "in my terms" compared to what I expect from my Apple products, and typical battery discharge & charge rates after X # of cycles. I order a high capacity 2680 Gold li-ion battery for my model iPhone. I was honestly excited! It arrives & I cockily just go to operate on my personal iPhone, & realize the battery is insanely, over-board, glued on!! Like...WHAT!
Now I look up videos & it's the norm but technique varied. That was the competition. So, I finally get under my battery, start removing it & I had no choice but get my device really hot! Unsafe hot! But it [battery] bent, bowed, & I intentionally kept molding, forming it back to its flat shape just as it happened and I decided I would look for info or videos on "status of" bent, bowed or slightly mangled iPhone 6 batteries. Thrush: this 'high capacity' battery sucks! It discharges rapidly! I wanna go back to my OEM battery but have never, not once, placed/replaced a battery not new. So I don't think I can. I believe it will malfunction & destroy my device & possibly hurt me?! Is that your findings sir?
Did you put your old mangled battery back in your iPhone 6
por Eric Rager
Check out the top comment, using this battery is not safe and it is better if you buy a replacement