How is Lithium-ion different from Lithium-ion Polymer?
It depends on the state of the electrolyte (liquid/ polymer) which makes the Lithium ions transfer. Lithium-ion usually adopts aluminum cans to sustain the flammable active materials of the battery securely since it includes liquid state electrolyte; while Lithium Polymer uses Polymer state electrolyte which is more stable than Lithium-ion electrolyte and covers the external parts with Laminated film.