The iPhone X has a very interesting battery inside - SoyaCincau
Ripped off a thin black layer off the inside of my iPhone 6s while opening it to replace battery. Should I be worried? For what is that needed? : r/mobilerepair
My DIY iPhone Battery Replacement Was Easy. Here's What I Did. - CNET
My iPhone battery puffed up cracking the motherboard in the process. : r/ iphone
The iPhone 11 Pro Max gets the teardown treatment from iFixit: Digital Photography Review
How To Replace The iPhone 6's Battery
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
How Smartphone Batteries Can Catch Fire—and How to Prevent It | iFixit News
The addition of a second battery gives iPhone X two extra hours of run time than iPhone 7
iPhone X has two batteries inside and a tiny motherboard, reveals iFixit teardown - India Today
New High Capacity 3600mAh Internal Replacement Li-Ion Battery for iPhone XS | eBay
Inside The iPhone 6S Battery Case - YouTube
The Metals Inside Your iPhone Are More Precious Than You Thought: Here's Why - CNET