Label: Standby performance MP3 battery
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The old saying goes, "If you want to work, you must first sharpen your tools," so don't underestimate the importance of batteries for MP3. Today, we and everyone just want to talk about the purchase and maintenance of MP3 batteries. I also hope that when you buy the MP3 player, don't just focus on the sound quality, function, etc. Other details should be considered.
Choose a built-in lithium battery or an AAA battery?
At present, the MP3 battery types in the market are mainly two kinds, one is the built-in lithium ion battery, the price of such MP3 is relatively high, and mainly used by some high-end MP3. The other type uses the AAA battery of No. 5 or No. 7, and the MP3 player in the middle and low grades uses more. Because the cost of such batteries is relatively low, and the battery brand is also more. Users can choose to purchase a single-use alkaline dry battery or a nickel-metal hydride battery that can be used for multiple times.
Lithium battery is a common name for lithium-ion batteries, and it is the best battery system at present. The negative electrode of the lithium ion battery is a carbon material, and the positive electrode is a transition metal oxide containing lithium. The electrolyte is an organic solution containing a lithium salt and is usually free of metallic lithium. Lithium-ion batteries have a relatively long life cycle and are easy to recycle. They are basically harmless to the environment and are known as "green batteries." In addition, because of the small size, light weight and high energy of lithium batteries, many MP3 manufacturers have begun to configure lithium batteries for their products.
However, the shortcomings of lithium battery are also obvious, and power supply cannot be continued, and long-term performance will be degraded. Because many MP3s that use lithium batteries are built-in, they must be recharged once the power is exhausted. It is more troublesome to replace. Some MP3 lithium batteries cannot be replaced at will, because the battery is fixed and built-in, and the cost of lithium battery is relatively high.
AAA alkaline batteries are more common, and replacement is very good. Take Nanfu No. 7 battery as an example. The retail price of 2 packs is 5 yuan. However, the disadvantage of alkaline batteries is that they are not used for a long time and cost is high.
The average standby time of MP3 with AAA battery is about 12 hours. One 7-cell alkaline battery can be used for 3-4 days under the condition of saving. If you listen continuously, the energy of 1 alkaline battery is 7 It is basically consumed in one day. Ni-MH rechargeable batteries are a good alternative, the price is cheaper than lithium batteries, and it is very convenient to replace and purchase. At present, the market reference price of the 2nd 7th nickel-metal hydride rechargeable battery and charger set is about 30 yuan, the service life can reach more than one year, and 30 yuan can only buy 12 7th alkaline batteries, with one battery. Using a 4-day calculation, the 12-cell battery can last for 48 days.
Practical MP3 battery purchase
Lithium battery
Our purchasing principle is to buy MP3 first and then buy the battery, so in the end, choose lithium battery or AAA battery, mainly based on the MP3 selected by the user. The MP3s that used lithium batteries in the early days were all built-in curing forms. Users could not replace the batteries at will, and the batteries must be replaced by the professional staff. The non-replaceable lithium battery is very obvious. When traveling, the MP3 suddenly loses power. In the case that there is no way to charge, the user cannot use it normally. In the later period, some manufacturers' products began to use the replaceable built-in lithium battery, which is convenient for users to select the second battery as a backup battery.
Moreover, many MP3 manufacturers currently have two lithium batteries as standard for their products, thus eliminating the trouble of users purchasing themselves. Another advantage of the MP3 with lithium battery is that it can be directly charged to the computer through the USB port of the MP3, and does not require a separate charger. In terms of portability, the advantages of built-in lithium battery are still obvious. Because each manufacturer's standard is different, so users should buy lithium batteries for their MP3, it is best to buy according to the original battery standard, or directly buy the battery provided by the manufacturer.
2. NiMH battery
At present, there are many brands of nickel-hydrogen rechargeable batteries, and the quality is also uneven. Foreign brands mainly include Sanyo and Toshiba. Domestic brands mainly include next generation and GP super. Because the batteries of these brands are more famous, there are more counterfeit and shoddy products on the market. In general, genuine battery work is relatively fine, and counterfeit battery work is relatively rough; some counterfeit nickel-hydrogen batteries are directly processed from dry batteries, which are often significantly different in weight from authentic nickel-metal hydride batteries.
In addition, you can identify according to the unique logo of the brand battery. For example, the genuine GP battery is printed finely around the body, the black plate is embedded in the positive electrode, the GP is engraved on the bottom of the negative electrode, and the “Yin†is engraved on the yellow part of the laser. In addition, the main difference between the genuine battery and the counterfeit battery is the price. When you buy the battery, you will ask several merchants. Compared with the outer packaging and price of the product, you will have a number. In addition, there are some all the bulk battery packs, so it is best not to buy them. Because the bulk tooling nickel-hydrogen battery is unstable, avoiding hidden dangers, we still don't want to buy and use it.
3. Alkaline battery
This kind of battery has nothing to choose from, and everyone is familiar with the cards, such as Nanfu, Energizer, Duracell and so on. The price of these batteries ranges from 2.5 yuan to 5 yuan, which can be purchased at supermarkets and convenience stores. If your MP3 is more power hungry, and you often use MP3, it is recommended that you do not choose alkaline batteries. The cost is high, the battery life is also short, and it is scrapped once it is used. Consider a rechargeable Ni-MH battery, which is low in cost and can be used multiple times.
Battery maintenance
Just briefly talked to you about the purchase of lithium batteries and nickel-metal hydride batteries, and finally we have to talk about battery maintenance. Since the lithium battery has no memory, there is no need to worry about charging when the battery is not fully charged. Lithium batteries are not easy to store in high temperature places, can be stored in a cool place, so the battery capacity loss is slower, and lithium battery should not be idle for a long time. Nickel-metal hydride batteries should be charged for three times during the first use (some mobile phone manufacturers require users to charge three batteries for the new mobile phone). The purpose is to flush the battery, and the new battery has a running-in period. Under normal circumstances, when the NiMH battery is used for one month, it will not enter the optimal state, and then the electrolyte will be fully activated. In order to maintain the battery, users must choose a high quality charger. Be careful not to discharge deeper after deep charging, which will greatly reduce the battery life, because deep discharge will reduce the number of battery charges.
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