All Things You Need to Know about Li-ion 2500mAh lgHE218650


The LG-HE2-ICR18650( LGHE21865) battery comes up with a nominal capacity of 2500mAh, the voltage of 3.6V.This is an absolutely excellent cell for anyone seeking high performance 18650 cells. This battery is one of the very good high current and high capacity battery types.


  • Model: ICR18650HE2
  • Chemistry: ICR
  • Nominal Capacity: 2500mAh
  • Nominal Voltage: 3.6V
  • Max. Charge Voltage: 4.2V
  • Max. Charge Current: 4000mA
  • Weight: 48.0g
  • Initial AC Impedance: ≤20 mΩ, without PTC
  • Product Classification: Cylindrical rechargeable lithium ion battery


There shall be no such defects as deep scratch, crack, rust, discoloration or leakage, which may adversely affect the commercial value of the cell.

Diameter : 18.3+0.2/-0.3mm(Max. 18.5mm)

Diameter is defined as the largest data value measured on the head area (A) of a cylindrical cell

Height : 65.0±0.2mm

structure of he2

Nominal Specification

Item Condition/ Note Specification
Nominal Capacity Std. charge/discharge 2500 mAh (Cm)
Nominal Voltage Average for Std. discharge 3.60V
Standard Charge Constant Current 1250mA
Constant voltage 4.2V
End condition(Cut off) 50mA
Fast charge Constant Current 4000mA
Constant voltage 4.2V
End condition(Cut off) 100mA
Max. Charge Voltage 4.2V
Max. Charge Current 4000mA
Standard Discharge Constant current 500mA
End voltage(Cut off) 2.5V
Fast Discharge Constant current 10000mA--20000mA
End voltage(Cut off) 2.5V
Max. Discharge Current For continuous discharge 20000mA
Weight Max. 48.0 g
Operating Temperature(Cell Surface Temperature) Charge 0~50℃
Discharge -20~75℃
Storage Temperaturefor shipping state) 1 month -20~60℃
3 month -20~45℃
1 year -20~20℃
LG 18650 HE2 2500mAh -Capacity

Curve of LG 18650 HE2 Battery Discharge Voltage and Capacity in Different Output Currents

LG 18650 HE2 2500mAh-CapacityTimeHours

Curve of LG 18650 HE2 Battery Discharge Voltage and Discharge Runtime in Different Output Currents

Curve of LG 18650 HE2 Battery Discharge Voltage and Runtime 

LG 18650 HE2 2500mAh-Energy

Curve of LG 18650 HE2 Battery Discharge Power and Discharge Voltage in Different Output Currents

LG 18650 HE2 2500mAh-PowerLoadTime

Curve of LG 18650 HE2 Battery Discharge Voltage and Discharge Runtime in Different Output Voltages

Curve of LG 18650 HE2 Battery Capacity and Discharge Voltage in Different Protection  Tests

Performance Specification

4.1 Standard test condition

4.1.1 Standard Charge

Unless otherwise specified, “Standard Charge” shall consist of charging at constant current of 1050mA. The cell shall then be charged at constant voltage of 4.2V while tapering the charge current. Charging shall be terminated when the charging current has tapered to 50mA. For test purposes, charging shall be performed at 23ºC ± 2ºC.

4.1.2 Standard Discharge

“Standard Discharge” shall consist of discharging at a constant current of 420mA to 2.5V. Discharging is to be performed at 23 ºC ± 2 ºC unless otherwise noted (such as capacity versus temperature).

4.1.3 Fast Charge / Discharge condition

Cells shall be charged at constant current of 4000mA to 4.2V with end current of 100mA. Cells shall be discharged at constant current of 10000mA and 20000mA to 2.5V. Cells are to rest 10 minutes after charge and 30 minutes after discharge.

Electrical Specification

Enviromental Specification


1.)Do not use different charger. Do not use cigarette jacks (in cars) for charging.
2.) Do not charge with constant current more than maximum charge current.
3.)Do not disassemble or reconstruct the battery.
4.)Do not throw or cause impact.
5.)Do not pierce a hole in the battery with sharp things. (such as nail, knife, pencil or drill, etc.)
6.)Do not use with other batteries or cells.
7.)Do not solder on battery directly.
8.)Do not press the battery with overload in manufacturing process, especially ultrasonic welding.
9.)Do not use old and new cells together for packing.
10.)Do not expose the battery to high heat. (such as fire)
11.)Do not put the battery into a microwave or high pressure container.
12.)Do not use the battery reversed.
13.)Do not connect positive(+) and negative(-) with conductive materials (such as metal, wire)
14.)Do not allow the battery to be immerged in or wetted with water or sea-water.

How to Custom 18650 Battery Pack

We have the unique ability to develop custom 18650 battery pack to fit your needs. Our expert team of chemists, engineers, and manufacturers who use proven chemistry and production methods that will get from spec to production fast. Slim, flexible, more powerful.


  • Custom Voltage Range: 3V ~ 120V
  • Custom Discharge Current: 0.2C ~ 120C (0.01A-1000A)

  • Custom BMS: Size, Features, Communication, Cut-off, Temperature
  • Custom Battery Size: Starting 0.5mm Thickness
  • Battery Temperature from -40°C–85°C
  • Custom Connector: JST/Molex/Hirose/Anderson/TE/Amphenol  Etc


  • Custom 18650 Battery Pack, MOQ 100 pcs
  • Custom Samples as fast as 3 Days
  • Strict Quality Control, No Safety Concerns Ever
  • Instant Customer Support, Solve Any Problem in Time.
custom lithium battery packs collection

custom lithium battery packs collection


product image
Aggregate Rating
5 based on 2 votes
Brand Name
LG Chem
Product Name
USD 1.5-4.5
Product Availability
Available in Stock