Voltage: 3.6V (conventional general-purpose battery, used for low-power electrical equipment in electronic products with a maximum discharge of 1C. The discharge conditions can be changed depending on the situation)
p>3.2V (the power battery may be discharged depending on the situation) Customized according to the situation)
Charging parameters: 4.2V
The minimum discharge termination voltage is generally: 2.75V The maximum charge termination voltage: 4.20V (Sanyo, Samsung, Panasonic, Tiansheng TS/latest. The charge termination voltage of the 18500 large capacity is 4.35V)
Capacity: 3.6V lithium cobalt oxide, current technology can reach 1900AMH (according to Tiansheng Weiye Technology Department)
Diameter: 18± 0.2
The minimum discharge termination voltage is generally: 2.75V
18650 lithium battery
Termination voltageMaximum charging voltage: 4.20V (the latest from Sanyo, Samsung and Panasonic. The charging termination voltage of large capacity 18650 is 4.35V)
Height: 50 ± 0.3
p>Are 18490 and 18500 batteries common?
Dangerous, definitely not, it would immediately fry the flashlight circuit or cause battery issues. The reason is that the full charge voltage of the battery is very different: the voltage of each AA battery is 1.5 and that of 3 cells is 4.5V, while the voltage of a lithium battery reaches 4.2V and that of 3 cells is 12.6V. Secondly, although the voltage of a single lithium battery is similar to that of three AA batteries, the discharge current is different from that of AA batteries . A special protection circuit must be equipped, otherwise the main part of the lamp head will be burned. , or the battery will be discarded due to over-discharge. Finally, heThis may be a hardware error. The appearance of the 14500 lithium battery is the same as that of AA dry batteries, while the 18500 lithium battery is smaller.
The dimensions of 18490 and 18500 lithium batteries are significantly different.
If the materials and processes are the same, the battery characteristics will be the same but the capacity will be different.
“18” means the battery diameter is 18mm. "500" and "490" mean the battery length is 50mm and 49mm respectively. above two batteries is not much different. Specific capacity varies slightly depending on brand and manufacturer.