What is a button battery? How to distinguish between good and bad?
Identify from battery appearance. Most of the side of the negative side of the battery is plated in yellow, giving a "gold" feel. The bottom of the positive shell is prone to rust spots.
With the electronic watches, calculators, lighters, cameras and other household appliances increasingly popular, button batteries (also known as button batteries), the application of more and more widely. All kinds of fake and shoddy button batteries also take advantage of.
Identify from battery performance. Most of the alkaline manganese battery capacity is low, usually less than the national standard 1.55V, short life; easy to leak, corrosion electrical appliances; voltage load characteristics of poor, the battery discharge curve was a sharp decline in slash; easy to produce inflatable, causing the battery "Belly."
