Lithium Ion Battery LP18650 Series 

LiPol Battery is known the battery industrial over for quality, safety, price and lead time. Our 18650 lithium ion battery show real rated capacity at the price every company can accept. The protection circuit can be built-in for safety control include over-charging, over discharge, short-circuit and temperature control. The additional connector made by JST, Molex & Hirose is also available with the custom length of wires.

You can find our other finished 18650 lithium battery configuration.

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Lithium Ion Battery 18650 Series

Part Number LP18650C LP18650C 2S LP18650C 2P
Capacity(mAh) 2600 2600 5200
Voltage(V) 3.7 7.4 3.7
State of Charge < 30 % < 30 % < 30 %
Internal Impedance <200mΩ <200mΩ <200mΩ
NTC Yes Yes Yes
Connector Yes Yes Yes
Charging temperature Range -0℃ to +45℃ -0℃ to +45℃ -0℃ to +45℃
Discharging temperature Range -20℃ to +60℃ -20℃ to +60℃ -20℃ to +60℃
Storage temperature Range -20℃ to +45℃ -20℃ to +45℃ -20℃ to +45℃
Life Expectance(typical)
No.of cycles(>70% on Cmin)
300 cycles 300 cycles 300 cycles

LP18650 Lithium Battery VOLTAGE DEFINITIONS

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 LP18650 Li 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 Ion Battery LP18650 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 CellPac 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

Choose 18650 Lithium Battery

ModelVoltage
(V)
Capacity
(mAh)
Size
(mm)
LP18650D3.7220018*65
LP18650C3.7260018*65
LP18650B3.7280018*65
LP18650A3.7320018*65
LP18650A3.7350018*65
LP18650D 2P3.7440019*37*70
LP18650C 2P3.7520019*37*70
LP18650B 2P3.7560019*37*70
LP18650A 2P3.7640019*37*70
LP18650A 2P3.7640019*37*70
LP18650A+ 2P3.7700019*37*70
LP18650D 3P3.7660019*56*70
LP18650C 3P3.7780019*56*70
LP18650B 3P3.7840019*56*70
LP18650A 3P3.7960019*56*70
LP18650A+ 3P3.71050019*56*70
LP18650D 2S7.4220019*37*70
LP18650C 2S7.4260019*37*70
LP18650B 2S7.4280019*37*70
LP18650A 2S7.4320019*37*70
LP18650A+ 2S7.4350019*37*70
LP18650D 3S11.1220019*56*70
LP18650C 3S11.1260019*56*70
LP18650B 3S11.1280019*56*70
LP18650A 3S11.1320019*56*70
LP18650A 3S11.1350019*56*70

18650 Li ion Battery Application example

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