The 18650 cell has voltage of 3.7v and has between 1800mAh and 3500mAh (mili-amp-hours). 18650s may have a voltage range between 2.5 volts and 4.2 volts, or a charging voltage of 4.2 volts, but the nominal voltage
The optimum storage voltage for 18650 lithium-ion batteries, when not in use for extended periods, is typically around 3.6 to 3.8 volts per cell. This voltage level represents approximately 40% to 60% of the total charge capacity of the battery.
Nominal Voltage: The nominal voltage of an 18650 battery is typically 3.7 volts per cell (1S). This means that when a single 18650 cell is fully charged, it will have a voltage of approximately 4.2 volts.
The charging voltage of 18650 cell is 4.2V and recommended charging current is 1A (0.5C). Again a module like TP4056 will come in very handy to charge this module and will also provide protection while discharging.
Meet the 18650, a remarkable lithium-ion rechargeable battery that goes by the formal name 18650 cells. These batteries operate at a voltage of 3.7 volts and come with varying capacities, typically ranging from 1800mAh to 3500mAh (milliamp-hours).
Cut-off voltage, the lower limit of a 18650 cell varies from 2.75V to 3V, depending on the specification. It is recommended NOT to discharge the battery lower than 3V, just to be on the safe side. You may know battery discharges when it connects to a device that needs power.
The 18650 battery has a nominal voltage of 3.6v and has capacity between 1200mAh and 3600mAh (read as mili-Amp-hours). The battery type 18650 are popular in rechargeable and high current draining devices considering its high-level capabilities like 250+ charge cycle and higher energy density.
Nominal voltage: In a normal full charge state, an 18650 voltage usually settles around 3.7 to 3.6 volts. A 3.7v indicates that the battery is fully charged and ready to use. Maximum charge voltage: The 18650 battery is rechargeable. Therefore, we should keep an eye on the charging volts of the battery.
The maximum voltage for a 18650 cell is typically 4.2 volts and a minimum of 2.5 volts because most 18650 cells use NMC chemistry. For an LFP cell, the maximum voltage is 3.7 volts, and a minimum of 2 volts.
An 18650 battery or 1865 cell is a cylindrical lithium-ion battery common in electronic devices. The batteries measure 18 mm (0.71 in) in diameter by 65 mm (2.56 in) in length, giving them the name 18650. The battery comes in many nominal voltages depending on the specific chemistry used.