How to know the batteries and the bad? Mobile power batteries on the inside, do not open it is difficult to see. Currently mobile power batteries must have three: square aluminum (and your cell phone batteries, but no protection board and packaging), 18650 cylindrical cells (cylindrical battery, the international standard), polymer batteries (one of the latest battery, commonly known as soft pack, charging high prices in Guangdong treasure, IPHONE use is this). Some people say that is the best rechargeable polymer treasure, I do not think so, do you use in any place, at the right place with the right batteries is critical. Now when more than 10,000 mA mobile power generally are used in 18650. How to distinguish between good and bad PCB? This is good or bad score out of batteries is more difficult, and only a professional factory test equipment to test it out, mobile power PCB board on the market now, the conversion rate of over 80% are good. In fact, the price of mobile power is to look at the brand, quality and capacity as well as sale of different brands, quality, capacity and sale prices are different. Mobile power prices generally ranging from tens to hundreds have, generally available in the price range between one to three hundred charging treasure magic bubble, do not choose too easily hurt cheap cell phone batteries, and the performance is indeed much worse. On the other hand, it also depends on what price you charge treasure manufacturers can accept, and now the price difference between the power of a big move, but it is best to buy quality guaranteed, and the price is also affordable, and now there are a lot of big brands Some prices were slightly lower mobile power, might capacity is not great, but at least the quality of clearance, it is also at ease with. Rechargeable Mobile Power Supply | Master can (certified) | Charging treasure provided by Shenzhen Shuo New Energy Co., Ltd. Shenzhen Shuo New Energy Co., Ltd. (www.molipow.com/page-about.html) Guangdong Shenzhen, a leader in mobile phone battery, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the master to lead the staff warmly welcome all inquiries negotiations to create a better future can master.