There are currently three types of ordinary rechargeable batteries:
1. Nickel-chromium batteries;
2. Nickel-metal hydride batteries;
3. . Lithium batteries.
Nickel-chromium batteries are an early product and there are currently relatively few on the market. It is characterized by a small capacity. When using it, it must be fully charged before running out of power. And discharge the battery frequently (on the charger). If you charge before exhausting the energy, the remaining electricity in the battery will not be discharged later. In actual use, the battery capacity decreases relatively quickly (short usage time). This is the biggest disadvantage of nickel-chromium batteries: the so-called memory effect.
Nickel-metal hydride batteries are rechargeable batteries that appeared after nickel-chromium batteries. It is said that there is no memory effect. But in real use, I have the impressionion that there is also some memory effect, but it is weaker than that of nickel-chromium batteries. The performance is that after the battery has been used for a while, the capacity decreases. There aren't many nickel-chromium batteries on the market right now.
Lithium batteries have the best performance among the three battery types, but they are also more expensive. It has no memory effect and the battery capacity is relatively low. Currently, the mobile phone batteries on the market are mainly lithium batteries.
What is the difference between lead-acid batteries, nickel-chromium batteries and lithium-ion batteries?
Lithium batteries do not contain or produce lead, mercury, cadmium and other toxic and harmful heavy metal elements and substances, whether used or discarded, and are relatively less polluting.And its electrolyte is organic solvent and lithium salt, most of which are non-toxic or low toxicity.
Compared to traditional batteries such as lead-acid, nickel-chromium and nickel-metal hydride batteries, lithium batteries contain very few toxic elements.
However, it should be noted that although lithium batteries themselves are non-toxic, the decomposition or hydrolysis products are hydrofluoric acid and other fluorine-containing compounds, which are corrosive and toxic. Therefore, you must follow a reasonable process when handling it.
Detailed information:
Lithium-ion batteries have been widely used in portable devices such as laptops, cameras and mobile communications due to their unique performance advantages. The developed large-capacity lithium-ion battery has been tested in electric vehicles and is expected to become one of the main energy sources for electric vehicles in the 21st century and will be used in satellites, aerospace and energy storage. energy.
With the shortage of energy and the pressure of environmental protection in the world. Lithium batteries are widely used in the electric vehicle industry, especially the emergence of lithium iron phosphate batteries, which has promoted the development and application of ilithium battery industry.
Baidu Encyclopedia-Lithium battery
People's Daily Online-It is said on the Internet that lithium batteries are highly toxic and explosive
It There are different ways of classifying batteries, which can be roughly divided into three categories
The first category: divided by electrolyte type includes: alkaline batteries, the electrolyte is mainly an aqueous hydroxide solution of potassium. Mainly batteries, such as: alkaline zinc-manganese batteries (commonly known as alkaline manganese batteries or alkaline batteries), nickel-cadmium batteries, nickel-hydrogen batteries, etc., mainly using aqueous solution of sulfuric acid as medium, such as lead-acid batteries; neutral batteries, using a saline solution as a carrier, such as zinc-manganese dry cells (some consumers also call them acid batteries), batteries activated by seawater, etc., mainly batteries using organic solutions as carrier; , like lithium batteries, treat lithium-ion batteries.
The second category: classified according to the nature of the work and storage methods: primary batteries, also called primary batteries, that is, batteries that cannot be recharged, such as zinc-manganese dry cells, primary lithium batteries, etc. ; secondary batteries, that is, rechargeable batteries, such as nickel-hydrogen batteries, lithium-ion batteries, nickel-cadmium batteries, etc., are generally called lead-acid batteries, which are also batteries secondary; fuel cells, that is, active materials are continuously added to the battery from outside when the battery is working, such as hydrogen-oxygen fuel cells, etc., i.e. -say that the batteriess are not in direct contact with the electrolyte. during storage, and the electrolyte is not added until the battery is used, such as magnesium-silver chloride batteries, also known as seawater activated batteries. p>
The third category: divided according to the positive and negative materials used in the battery, including: zinc series batteries, such as zinc-manganese batteries, zinc-silver batteries, etc. ; such as nickel-cadmium batteries, nickel-hydrogen batteries, etc. ; lead-acid series batteries, such as lead-acid batteries, etc. ; lithium magnesium series batteries, etc. ; batteries, alkaline manganese batteries, etc. ; air (oxygen) series batteries, such as zinc-air batteries, etc.
Definition of rechargeable battery
Rechargeable battery, also known as: storage battery and secondary battery, is a battery whichcan be recharged and used repeatedly. The most common include: lead-acid batteries (commonly called a "battery" when used in automobiles), nickel-cadmium batteries, nickel-hydrogen batteries, and lithium-ion batteries.
Battery Rated Capacity
Battery Rated Capacity refers to the amount of electricity released when the battery is discharged to the cut-off voltage under certain operating conditions. dump. IEC standards state that the power released when nickel-cadmium and nickel-metal hydride batteries are charged at 0.1 C for 16 hours and discharged at 1.0 V at 0.2 C in an environment of 20 ± 5 ℃ corresponds to to the nominal capacity of the battery. Units are Ah, mAh (1Ah=1000mAh)
Rechargeable Digital Camera Batteries Use and Care Guide
www.DiGi163.com 2004-4-11
Nowadays, devices pDigital cameras rely primarily on batteries to operate. There are also many points to consider when using batteries, so that the battery can "extend its life".
Cleaning the battery
To avoid the problem of power loss, you should keep the contact points on both ends of the battery and the inside of the battery cover clean . If the surface is very dirty, use a soft, clean, dry cloth to gently wipe it. Never use soluble chemical cleaners or detergents, such as thinner or alcohol-based cleaners. The solvent cleans your digital camera, battery or charger.
Charging the battery
Charging time depends on the charger and battery used, as well as the stability of the voltage used and other factors. Under normal circumstances, when charging a battery used for the first timeth times (or a battery that has not been used for several months), the lithium battery should be charged for more than 6 hours and the nickel-metal hydride battery should be charged for more than 14 hours, otherwise the Battery life will be shorter in the future. And when the battery still has residual energy, try not to recharge it to ensure its lifespan.
Using the battery
Be sure to avoid excessive discharge during use. Overdischarging means that the power consumption exceeds the limit at some point. Otherwise, even if it is recharged, its capacity cannot be fully restored, resulting in damage to the battery. Since excessive discharge will cause the battery's charging efficiency to deteriorate and its capacity to decrease, camcorders are equipped with a battery alarm function. Therefore, when such a situation occurst, the battery should be replaced in time and try not to let the battery run out and cause the camcorder to automatically shut down.
Battery storage
If you plan not to use the digital camera for a long time, you should remove the battery from the digital camera or charger and unload it completely, then store it. in a dry, cool environment and try to avoid storing batteries with general metal objects. In order to avoid short circuit problems in the battery, the battery should be stored with a protective cover when not in use