TileSport Key Finder, Phone Finder, Anything Finder - Graphite

... is the battery replaceable?

I just recently heard of the new smart alert beta version for tile on the moderndayfamilyman youtube channel. is this beta still available?

Does this drain phone battery ? Can I just pair it when I want to find it

Can I use it to keep an eye on my bike while I am still nearby (eg going into a bank or restaurant)?