My iPhone 5s was quickly becoming a land line-it would barely hold a charge and needed to be kept plugged in most of the time.
By following the step-by-step guide on iFixit, the repair was done quickly and without error. The iSclack tool was incredibly helpful.
I used one of those bean- filled wraps you put around your neck after warming it in the microwave or freezing it in the freezer. I warmed in the microwave for 90 seconds, and used it to warm the adhesive strips under the battery. The strips still tore in half but the residue was easy to remove because of the warmth from the neck warmer