Memory no weight, it can be pressed people crawl to the ground, it can make a person's soul devalued to zero below can also inspire people to fly in the ideal space to enjoy bright and colorful landscape.
Theyareoneofthe mostpopulartypes of batteryforportableelectronics, with one of the best energy-to-weightratios, nomemoryeffect, anda slowlossof charge when not in use.