My 15-inch MacBook Pro Late-2016 battery looks swollen, should I be worried? : r/macbookpro
Apple Service Rep: Swollen MacBook Battery “Normal” | Cult of Mac
MacBook Pro 2011 still working (sorta) but battery got swollen and can't use trackpad. Is it worth fixing? It won't hold a charge and power says 0% and only works when connected
MacBook Pro 13" Unibody Early 2011 Battery Replacement - iFixit Repair Guide