Lithium batteries advantages and disadvantages, how can I buy some good quality battery?

1. The lithium battery has a high platform, a single battery voltage to an average of 3. 7 v or 3. 2 v, is approximately equal to three pieces of nickel cadmium battery or nickel metal hydride batteries in series voltage, is advantageous to the formation of battery power. 2. Compared with batteries, lithium batteries with higher energy density. Has the high energy storage density, 460 - 600 wh/kg, which is about 6 - of lead-acid batteries Seven times. 3. Compared with lead-acid batteries, lithium battery weight is lighter, 1/5 of the lead acid products, at about the same volume 6. 4, lithium battery life is longer, service life can reach more than 6 years, lithium iron phosphate as the positive battery with one cdod charge and discharge, has a record with 1000. 5. The electric car with iron phosphate lithium-ion battery with high power capacity, can reach 15 - 30 c of charge and discharge capacity, facilitate high strength starting and accelerating. 6, low self-discharge rate, no memory effect, often used in daily electronic products of power supply. 7, lithium battery of high and low temperature adaptability is strong, can be in - 20℃- 60 ℃ environment, can be in - after processing 45 ℃ environment. 8, green environmental protection, regardless of the production, use, scrap, and do not contain, does not produce any poisonous and harmful heavy metals such as lead, mercury, cadmium and material. The disadvantage of lithium battery 1. The lithium battery security is poor, with explosion danger. 2. Made of lithium cobalt acid lithium batteries in the big electricity flow can't discharge, poor safety. 3, lithium battery needs protection circuit, prevent the battery overcharge discharge. 4. High production requirements, cost is high. How can I buy good quality lithium batteries? 1. See exterior appearance is to see the appearance of lithium-ion batteries, technology, size and process. Whether shell stitching width is wide, whether to have burrs, if there is any oil, feel is good, very comfortable, advanced technology after polishing, the rubber oil glazing materials, feel is good, also very strong insulation performance. 2. See if capacity to have a clear there is no clear label capacity lithium battery is likely to be reassembled by defective or recycling of batteries of waste batteries. The market is flooded with many cheap lithium-ion batteries, they are made of recycling batteries or disassemble the battery. Although they are cheap, but their lifespan is short, the quality is not stable, if not careful, it might damage the equipment or even explode. 3. Look at the characteristics of lithium battery protection circuit determines the li-ion battery protective plate must be added to, in order to prevent the lithium battery overcharge, discharge and short circuit, and so on and so forth, such as lithium battery without protective plate would have deformation, leakage and explosion danger. In the face of fierce price competition, battery packaging company seeking cheaper protection circuit, or simply don't use them, let the explosive lithium-ion battery flooding the market. Consumers, of course, you can't judge whether there is a protection circuit board from the appearance, so it's best to choose a shop with good credit to buy.