Product material, the conversion efficiency of energy storage medium.

Mobile power supply only two types of batteries, a polymer batteries, another for lithium batteries. Two kinds of media on the shape and structure difference is very big. Ordinary lithium batteries battery advantage is low cost, determine system is large, heavy weight, short service life and may cause explosion, which is very fatal weakness. Polymer battery safety, no explosion, light weight, more applications on high-end digital equipment, the disadvantage is that the price is more expensive. But you get what you pay for it, think is worth it. The other is the problem of electric capacity conversion efficiency, don't just look at the data size, actual output capacity but also the question of should be concerned about. Or output capacity is too small, the battery capacity shows that how much is useless.