It is determined by the electromotive force of the positive and negative electrodes caused by the materials and substance contained in the battery.
Ordinary batteries are zinc-manganese batteries and the voltage of each battery is 1.5 V. The starting voltage of a zinc-manganese battery varies depending on the type of MnO2 used, the composition of the electrolyte and the pH value. It is generally between 1.55 and 1.75 V, and the rated voltage is 1.5 V.
AA batteries include: rechargeable nickel metal hydride batteries, rechargeable nickel batteries -cadmium, etc. The positive active material of nickel-hydrogen battery is Ni(OH)2 (called NiO electrode), the negative active material is metal hydride, and the standard electromotive force of the battery is 1.319V. The discharge voltage of batteries nickel-cadmium varies depending on the discharge device. Each unit cell (Cell) is approximately1.2 V.
Detailed information:
Normal charging
Different batteries have their own characteristics and users should charge according to the manufacturer's instructions. In sleep mode, the phone also consumes battery. If you want to charge quickly, you must first turn off the phone or remove the battery to charge it.
Fast charging
Some automated smart fast chargers only indicate that the battery is 90% full when the signal light changes, and the charger automatically switches to slow charging to fully charge the battery full. It is best for users to fully charge the battery before use, otherwise the use time will be shortened.
Memory effect
If the battery is a nickel-cadmium battery, if it is not fully chargedand discharged for a long time, it will leave traces in the battery and reduce battery life. ability. This phenomenon is called battery memory effect.
Clear memory
The method involves completely discharging the battery and then recharging it. For discharge, you can use a charger or charger with a discharge function, or you can use the sleep mode of the mobile phone. If you want to speed up the discharge, you can turn on the lights on the phone's display screen and buttons. To ensure that the battery can be recharged, follow the instructions in the instruction manual to check the time and repeat charging and discharging two to three times.
Battery storage
Lithium batteries can be stored in a clean, dry, ventilated room with an ambient temperature of -5°C to 35°C and relative humidity not not exceeding 75%. They should be avoided. In contact withec corrosive substances, keep away from fire and heat sources. The battery power remains between 30 and 50% of its nominal capacity. It is recommended to recharge stored batteries every 6 months.
Baidu Encyclopedia-Rechargeable Battery
Baidu Encyclopedia-AA Battery
What type of AA rechargeable lithium battery is it? Easy to use
1. The difference between lithium batteries and nickel-metal hydride batteries:
1. nickel-metal hydride batteries. Therefore, its talk time and standby time are longer than that of nickel-metal hydride batteries, and its price is also higher than that of nickel-metal hydride batteries.The battery is higher. In addition, under normal circumstances, nickel-metal hydride batteries cannot be charged at any time, which greatly reduces their convenience.
2. Specific energyic to the volume of lithium batteries is high. The working voltage of the lithium-ion battery is 3.7V, and its volume specific energy is higher than that of nickel metal hydride. Currently, lithium-ion batteries are available in aluminum shells, steel shells and flexible packaging. occupy the market in their respective fields.
3. Operating voltage standards are different. The working voltage of disposable batteries and nickel-metal hydride batteries is 1.2-1.5V, and the two connected in series are 2.4V-3.0V. Most electrical appliances have already established this operating voltage standard. Such as a portable music player, radio, etc.
2. Similarities between lithium batteries and nickel-metal hydride batteries:
Both can provide power easily and say goodbye to constraints, some are common in the market, such as lithium from cell phones; batteries.
Detailed information:
1. Advantages and disadvantages of lithium batteries:
1. Advantages: No memory effect, light weight.
2. Disadvantages: high cost, low current, and intolerance to overload (compared to nickel metal hydride).
2. Advantages and disadvantages of nickel-metal hydride batteries:
Advantages: low price, strong versatility, high current, environmentally friendly and stable.
2. Disadvantages: high weight, short battery life.
There are currently three types of ordinary rechargeable batteries:
1. Nickel-chromium battery
2.
3. Lithium battery.
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 outof energy. 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 actual use, I feel that there is also some memory effect, but it is weaker than that of nickel-chrome 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 types of batteries, but they are equalslightly 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.