Ever try to take a battery out of an iPhone or Android or other modern smart phone? The covers don’t just slide off like older (>one year) phones.
have yet to see a droid with out a no tools way to remove the battery..
I find I have to do this with the company Blackberry I have. Often times, it will come back on for no apparent reason. I have to physically take out the battery to be sure that it’s off.