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a battery: that can not be charged, the battery can only discharge, but the battery capacity is generally greater than the same size rechargeable batteries, such as manganese, alkaline batteries, lithium button batteries, lithium batteries. ? secondary batteries: Refers to rechargeable battery recycling, such as lead-acid, nickel cadmium, nickel hydrogen, lithium ion, lithium polymer, fuel, zinc, aluminum, magnesium air battery. ? Other: fuel cell, physical battery, solar cell. ? Rated capacity: refers to the battery is fully charged, discharged to the cut-off under no-load voltage, that can release electrical energy, generally mAh or Ah (1Ah = 1000mAh) symbol. Long-term use the battery after the release of power will decline. Is the charge and discharge capacity of the C-rate in certain conditions, so the battery capacity is directly related with the C-rate. Rated capacity of the battery under test is obtained 0.2C capacity. C-rate the greater the smaller the battery discharge rate. Charge capacity (Ah or mAh) = × charge current charge time, discharge capacity (Ah or mAh) = discharge current × discharge time. In general, 0.2C discharge current base to reach 95% to 100% discharge rate, while the 1C discharge current can reach only about 90% discharge rate, as charged by the battery itself, raw materials, the characteristics of the corresponding part of the time need to be recharged, roughly current discharge time is equal to 120 ~ 160%, for example, NI-MH AA1800mAh, to 0.2C (360mA) charging about 6 to 8 hours, and to 0.2C (360mA) discharge of about up to 5 hours. Most of today's traditional area of the camera has been replaced by digital cameras, traditional and stylish film is also replaced by electronic components and CCD. Followed by a large power consumption become the new problems when using the DC current DC battery There are 2 solutions: Special lithium batteries and nickel-metal hydride rechargeable batteries. Dedicated lithium light weight, high capacity, environmentally friendly and no "memory effect", but very expensive, poor general, but a lot of fakes. Ni-MH battery is a high capacity, discharge depth, resistance to overcharge and over discharge, charging time is short so obvious advantages, the most important is the nickel-metal hydride batteries are cheap, generic is very strong. Laptop Battery acer Laptop Battery Dell Laptop Battery hp Laptop Battery Toshiba Laptop Battery
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