The difference between lithium battery and nickel hydrogen battery charging method

The difference between lithium batteries and nickel-metal hydride batteries is that lithium batteries are more suitable for using on mobile phones. However, on digital cameras, because the demand for current is quite large, and the power consumption is much larger than that of mobile phones, the use of nickel-metal hydride batteries requires better.

Advantages: no memory effect, light weight.

Disadvantages: high cost, low current, not overcharged (compared to nickel-metal hydride).

The lithium battery has a lithium battery (non-rechargeable) and a secondary lithium battery (rechargeable), and the secondary lithium battery is divided into a Li-ion lithium ion battery and a Li-Polymer lithium polymer battery.

In general, digital cameras use secondary lithium batteries (rechargeable), which are lighter in weight and have a 48% higher volumetric energy density ratio than nickel-hydrogen batteries. Because of this, the production and sales of lithium ion secondary batteries are gradually exceeding that of nickel-metal hydride batteries. The battery has a small self-discharge and no memory effect. The number of charge and discharge cycles can reach more than 600 times, especially the Li-Polymer lithium polymer battery developed in recent years. In addition to the smaller volume, it is not subject to the general battery cylinder or square. The shape is limited and the weight is lighter.

Lithium batteries are not able to withstand full charge. If you use them carelessly, there is a danger of explosion. Therefore, you need to build a control IC to prevent overcharge, but the cost is also relatively high. Lithium batteries are not uniform because of the specifications, so there is a case where the organic type cannot be bought after the production is stopped. However, it has improved a lot.

Advantages and disadvantages of nickel-metal hydride batteries

Advantages: low price, strong versatility, large current, environmentally stable.

Disadvantages: heavy weight and short battery life.

The design of nickel-metal hydride batteries is derived from nickel-cadmium batteries, but there has been great progress in improving the memory effect of nickel-cadmium batteries. The main change is to replace the cadmium used in the negative electrode with a hydrogen storage alloy. Therefore, the nickel-hydrogen battery can be said to be a typical representative of material innovation. The pollution caused by nickel-metal hydride batteries is much smaller than that of nickel-cadmium batteries containing cadmium. Therefore, nickel-cadmium batteries have been gradually replaced by nickel-hydrogen batteries.

Lithium batteries except for a few lithium batteries can be used (NIKONEN-EL1 and 2CR5). Most of them have no battery replacement. This is very troublesome for going abroad for a long time, or a large number of users. NiMH batteries have no such problem. Digital cameras that use NiMH batteries can usually be replaced with alkaline batteries.

In recent years, digital cameras are increasingly using nickel-hydrogen batteries. Battery manufacturers are also optimistic about this market. They have introduced high-capacity nickel-metal hydride rechargeable batteries, making the technology of nickel-hydrogen batteries soaring and increasing in capacity. The battery is comparable, and the charger is getting more and more refined, and the charging time is greatly shortened.

Many consumers often use the same concept when using the battery. Now lithium batteries are the mainstream, but the use of nickel-hydrogen batteries is still applied to lithium batteries. In fact, lithium batteries and nickel-metal hydride In addition to the different products, the battery is used in different ways.

Newly purchased lithium battery: the first three times use until the natural shutdown, and then with the original direct charge in the phone to charge to full, and then continue to charge for about 1 hour (about 2000 hours above 2000mah).

Daily full charging is ok and do not charge more than 1 hour after full. Avoid late night charging (high grid voltage). The battery can be used with the charge and can be used for alarm or shutdown. Note that the battery that is turned off should be charged as soon as possible. Otherwise, the battery will self-discharge and the voltage will continue to drop, which may cause the self-locking protection to fail to charge. To develop a habit: when you arrive at the unit in the daytime and arrive at home in the evening, start charging. When you are full, leave or leave the power before you go to sleep.

Use: General lithium battery can be charged, used, and stopped. Cycle life refers to the number of full charge and full discharge, and partial charge and discharge can be understood as a fraction of the life. The key to battery use: the battery is full, can be charged for 20 minutes - half an hour to achieve saturation, but must be avoided after a long time to charge. Continued charging for a long time after full will cause opposite effect, as a result, the capacity is reduced and the internal resistance is increased, and the capacity is shortened, and the system is turned off when a call is made. PPC and other devices with power chips are best used until there is no electricity to recharge, mainly considering the problem of power display measurement.

Continue charging after the battery is fully charged is very harmful to the lithium battery. After the battery is fully charged, the battery will generate side reactions, the active material will decrease, the amount of garbage will increase, the capacity will decrease, and the internal resistance will increase. The serious overcharge will directly damage the battery structure and cause the battery to be scrapped. Some chargers now also provide a charging protection mode, which can effectively protect the battery according to whether the battery is fully charged or not.

Lithium-ion batteries can be charged at any time, and have a limited impact on life. For batteries with a fuel gauge such as PPC, it is recommended to use the automatic shutdown to charge, so as not to affect. It can be charged at any time and can be stopped at any time. If it is full, it will affect the battery life.

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