Common sense to buy mobile phone battery 1. difference nickel cadmium, nickel metal hydride, lithium-ion battery: 1, see the logo. Generally marked on the battery is English identity. NI-CD nickel-cadmium batteries NI-HI nickel metal batteries NI-LI lithium ion battery. 2, compare weight. Same capacity nickel-cadmium batteries, nickel metal hydride batteries, lithium-ion batteries nickel-cadmium batteries compare heaviest, followed by nickel-metal hydride, lithium-ion battery lightest. 2. The advantages and disadvantages of nickel-cadmium batteries: Ni-Cd battery is composed of two plates, one is made of nickel, cadmium and the other is made of two metals occur in the battery charging Po magic bubble reversible reaction, so the battery can recharged. Nickel-cadmium is characterized by "strong", and cheaper prices. Disadvantages are: cadmium metal pollution for the environment, small battery capacity, short life, so most low-grade nickel-cadmium batteries are batteries. Memory effect. Each charge will need a permit discharge, then recharge. 3. nickel-metal hydride batteries and disadvantages: nickel metal hydride batteries and nickel hydrogen ion synthesis, since it does not contain cadmium metal, does not pollute the environment charging treasure, which is also known as "green batteries." NiMH battery power reserve 30% more than the nickel-cadmium batteries, mobile phone talk time is thus prolonged by 30%. NiMH batteries are lighter than nickel-cadmium batteries, longer service life. And environmental pollution, no memory effect. NiMH batteries drawback is the price more expensive than nickel-cadmium batteries, performance is worse than lithium. Mid-range battery. The advantages and disadvantages of the lithium ion battery: lithium-ion high-energy density as a battery material. Lithium-ion battery is a smart battery, it can be exchanged with the original dedicated smart charger, charging time to achieve the minimum and maximum life cycle and large capacity. Lithium ion batteries are currently the best performance of the battery. Compared with the same size nickel-cadmium batteries, nickel metal hydride batteries, rechargeable battery reserve Shenzhen Bao largest, lightest, longest life expectancy, the shortest charge time, no memory effect. But the most expensive charge treasure manufacturers, charger also selective. Note that when you purchase the use of body security code: Each phone has its own unique code IEMI (CDMA handsets for the ESN), the time of purchase, GSM mobile phone just by pressing * # 06 # key, the phone will show the machine IEMI unique serial number on the back of the phone if the same code number affixed IEMI like, it is not a refurbished machine; IEMI code does not appear as a serial number or not is absolutely parallel phone refurbished. CDMA handsets currently unable to check the ESN body, only match the query back of the phone according to the ESN ESN codes on the packaging box. To check the time of purchase identification: A, check whether the phone has network logo Ministry of Information Industry, in some places also requires the existence of CCIB mark of inspection on the phone; B, check the IMEI code body, mechanical serial number is correct; C whether to check the battery manufacturer posted on security signs; D, check whether there is a warranty card; E, to check the product manual. Shenzhen charging treasure | 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.