Everyone who owns iPhone should know the battery icon. But the difference is the battery icon you’ve seen don’t appear on the screen of iPhone. It’s a real battery-shaped iPhone charger.
The icon battery pack for iPhone is shaped as an animated icon. Using the EL lighting technology, the battery pack can tell you the charging state just like what the visual icon has done. The built-in lithium-ion polymer battery can offer you additional talk time up to 3 hours and audio play back up to 18 hours.
The portable iPhone charger has been unveiled by EssentialTpe. It should be available soon.
Update: now the battery pack has been available.