Digital camera lithium-ion batteries

Digital camera lithium-ion batteries
commonly used in batteries, nickel-metal hydride batteries, nickel-chromium batteries, alkaline JVC GR-DX48 battery ... Since most digital cameras use AA Ni-MH battery power to do so in this article for AA Ni-MH battery for about focus .

Ni-MH battery features:

Nickel-metal hydride JVC Camcorder Battery (NIMH) is a modern electronic products, the most widely used battery, one green with a single large capacity, discharge characteristics of a smooth, high universality, heat a small and so on. The disadvantage is that bulky, self-weight large.

Ni-MH battery features:

Ni-MH battery nominal voltage of 1.2V, in the case of sufficient power up to 1.35V, with common AA alkaline battery category are similar, basically universal, Ni-MH battery discharge characteristics are very good, very smooth discharge curve, consumption of electricity is about to end, the voltage suddenly drops, which is close to the nickel-chromium batteries, but not as good as instantaneous discharge current nickel-chromium JVC GR-DX35K battery. In addition, the nickel-metal hydride batteries used mercury-free design, which is of great significance for environmental protection.

Ni-MH battery structure:

AA Ni-MH battery with the same shape as ordinary AA batteries. With the nickel-chromium batteries, like nickel-metal hydride batteries used reversible chemical reaction to achieve the charge and discharge process. Therefore, in the process of charging and discharging the JVC GR-DX37 battery will produce a large number of gas inside the battery internal pressure is relatively large, therefore, nickel-metal hydride batteries are used in the design of the exhaust vent to prevent excessive internal pressure due to an explosion. Currently we have come into contact with GP series battery, why not see the vent, because the battery is installed at the top of a circular plastic film, used to prevent blockage and prevent the positive vent cap of the shell with the negative short-circuit.

the battery memory effect:

The so-called memory effect refers to the battery charging and discharging process, the chemical composition of the internal battery is determined, in one region can not continue to produce a chemical reaction phenomenon. With an example: When a JVC GR-DX45 battery is fully charged, it can be a continuous electrical discharge 60 minutes. Now we will use this section to conduct the battery of this electric discharge, discharge to 30 minutes to stop, and then this section of the battery charge, charge a good 30 minutes after power to continue to discharge, do not completely discharged each time, after N repeated operations This batteries have a memory effect, the process of using in the future, when the JVC GR-DX300 battery discharge after 30 minutes, it is no longer output current, and that is, the battery capacity of this section reduced by half. Of course, we now use nickel-metal hydride batteries in general this phenomenon does not occur, it is because the chemical composition of nickel-metal hydride batteries and nickel-chromium batteries different. Ni-Cr battery memory effect is very serious. Here, we recommend to

Qi source of liquid crystal display power consumption of the charger can charge and discharge a single-click View

the Panasonic Camcorder battery charge:

Is slightly different batteries and Ni-Cr, Ni-Cr battery is a constant pulse of direct current to recharge, while the nickel-metal hydride batteries using a small ripple, the relatively smooth direct current to recharge. In urgent cases, the two chargers are interoperable. Charge should be to master the appropriate charge current, how to estimate the appropriate charge current do? This is according to the battery capacity to decide. In general, civil panasonic CGA-DU07 battery standard 16 hours to charge, charge current is: battery capacity / 10, units mA. There are fast-charge, fast charge current standard of 2.5 ~ 5-fold, there is no uniform standard. Our selection of chargers, they should try to use the standard charger, how to determine the charge current chargers do? When we buy a charger, looking for a JS or own a multimeter multimeter, plug charger power supply, multimeter appropriated for DC current 500mA stall, red table pen charger then panasonic CGA-DU06 battery cathode film, the black table pen then negative films, which , we can approximate by multimeter readings to determine charger charging current, because the battery's internal resistance is small, so close to the actual meter reading charge current. We can also use a number of auto-charger, the advantage of such a charger automatically stops charging the wires do not have to worry about people. In addition, we should try to avoid the use of fast-charging, fast charging, the battery's internal chemical reaction is very severe, the temperature is also high, and this will accelerate the aging of the battery and shorten panasonic CGA-DU14 battery life. However, when you go out or emergency quick charger, but a very useful oh.