Originally Posted by bchapman

I believe that Lithium Ion batteries, commonly used in cell phones are not the same as Lithium Polymer batteries that we use in our hobby. They are two different battery types and their chemistry is not entirely the same. Lithium Ion does have a greater energy density than Lithium Polymer, but doesn't pose an equal risk of fire as the latter.

This is my understanding, but I'm not an expert in the field, so there may be other issues I may be overlooking