Button batteries from the literal meaning is the shape of the shape of the button like a battery, and it is common in our lives is also commonly used in a battery. It has a small, more models more features. Generally used in our watches, small toys, calculators, hearing aids and so on. Here we come to know about the button battery:
Button battery type
Button batteries are generally charged and not charged two, charging, including 3.6V rechargeable lithium ion (LIR series), 3V rechargeable lithium ion battery (ML or VL series); Button Cell not included in the charge 3V lithium manganese button cell (CR series) and 1.5V alkaline zinc manganese button cell (LR and SR series).
According to the ingredients to distinguish, the common type of button-type batteries are lithium batteries, alkaline batteries, zinc air batteries. Early mercury batteries were banned due to environmental pollution problems. However, in addition to the lithium battery with models beginning with BR and CR, Button Cell other button batteries may still contain small amounts of mercury (ie, mercury). Although manufacturers have developed mercury-free alkaline batteries and silver oxide batteries in recent years, Button Cell Due to technology and patents and other reasons, the current national dry battery mercury ban, the button battery still allows the presence of a small amount of mercury, therefore, for the use of the button battery should still be placed in the provisions of the recycling, Button Cell do not arbitrarily discarded Or mixed with garbage and affect the environment.
Button battery application
Button batteries because of the smaller shape, so in a variety of micro-electronic products have been widely used, the diameter from 4.8mm to 30mm, thickness from 1.0mm to 7.7mm range; generally used for all kinds of electronic products, such as backup power, such as Computer motherboards, electronic watches, electronic dictionaries, electronic scales, memory cards, remote control, electric toys, pacemakers, Button Cell electronic hearing aids, counters, cameras,
Button batteries are also divided into two categories of chemical batteries and physical batteries, the most popular chemical battery applications. They consist of anodes (positive), cathodes (negative) and their electrocontacts. As shown on the right. It is made of stainless steel, and as a positive electrode, Button Cell the negative pole is a stainless steel circular cover, Button Cell positive and negative between the seal ring insulation, sealing ring made of nylon, sealing ring in addition to insulation, but also to prevent leakage of electrolyte The Many types of button batteries, most of the materials used to name, such as silver oxide batteries, lithium batteries, Button Cell alkaline manganese batteries.
From the back of the battery you can see the corresponding mark:
LR --- alkaline - 1.5V
SR --- silver oxide - 1.55V
CR --- lithium - 3V
ZA --- zinc empty - 1.4V
Button battery construction
As a result of the use of button batteries, the combination of the battery is very small, but the discharge intensity is not large, used in small motors, small radio with DC power supply. Button batteries because of low cost, usually contain harmful substances, the environment is very dangerous, Button Cell this battery needs more effective recovery, do not arbitrarily discarded. Button batteries as the name suggests is the shape of the button like a battery.