Many mobile devices are equipped with a 40C battery. This is essentially a flat, rectangular battery with rounded edges. It's most often manufactured in China, but companies in other countries, such as Japan and the United States, also produce it.
40c battery specifications
To ensure long battery life, it uses lithium-ion technology. The device's capacity is approximately 500 mAh, but higher capacities are available. The voltage of this type of battery is 3.7 volts. With active use, the battery will last for several years.
Power: 1.85 WH. The 40c has polarity terminals on one end. These are square copper plates located at the edges, and in the middle is a dummy plate, which serves as a grounding element.
This battery should not be thrown into fire or water. It should also not be given to children or disassembled. This type of battery has a limited charge and discharge cycle, typically no more than 500-1000 times. This battery is available in black or white.
Charging takes 1.5-2 hours. To ensure long battery life, the 40C battery should be fully discharged and not interrupted during charging.
