18650 LITHIUM ION BATTERY

Liter -18650 Lithium Ion Battery Voltage DefiniItions

Open Circuit Voltage (OCV): Equilibrium potential 3.0 V to 4.2 V on average, dependent on temperature, storage duration, and state of charge.
Nominal Voltage is typically 3.7 V, see specifications for individual batteries.

End of Discharge Voltage:
The voltage at the end of discharging is 2.75 V to 3.2 V per cell, depending on the discharge rate and temperature.
End of Charge Voltage: Terminal voltage after the charge is 4.2 V.

3.7V Liter -18650 Lithium ion Battery Capacity Definitions

The capacity C of the battery is defined by the discharge current I and the discharge time t: C = I * t
I = constant discharge current
t = duration from start of discharge to end of discharge
Rated capacity: The rated capacity C represents the energy delivered by the battery at a discharge rate of 5 h (0.2 CA) expressed in mAh (milliampere-hours). The reference temperature is + 22 °C ± 3 °C, and the final discharge voltage is 3.0 V.

Available Capacity:

The factors that affect the available capacity are:

Discharge rate
End of discharge voltage
Ambient temperature
State of charge
Cycle history
At the higher than nominal discharge rates the available capacity is accordingly reduced.

Lithium Battery Liter -18650 Current Definitions

Charge and discharge rates may be given as multiples of the Rated Capacity (C) in Amperes (A) with the term CA.
Example:
Rated Capacity C = 1000 mAh
0.1 CA = 100 mA, 1 CA = 1000 mA

Nominal Discharge Current:
The nominal discharge current of a CelLiter -ac LITE battery is the 5-hour discharge current (0.2 CA). It is the current at which the nominal capacity of a cell is discharged in 5 hours.

I = C/t = C/5 = 0.2 CA when t = 5 h

18650 LITHIUM ION BATTERY LIST