18650 Li ion lithium Battery Cell 3.7v 1200mAh, 1500mAh, 1800mAh, 2000mAh, 2200mAh, 2500mAh

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Features  for 18650 3.7V 2500mAh Li-Ion Battery .

tem Specifications
Nominal capacity 2500mAh

charge:1.25A ,4.20V ,CC/CV 125mA cut-off

Nominal voltage 3.6V
Standard charge CC/CV ,1.25A ,4.20V ,125mA cut-off
Rapaid charge CC/CV ,4A,4.2V ,100mA cut-off
Charging life Standard charge 180min/125mA cut-off

Rapaid charge : 60min(at 25oC)/100mA cut-off

Max continuous discharge 20A(at 25oC),60% at 250 cycle
Discharge cut-off voltage 2.5V
Cell weight 45g max
Cell size Height 64mm

Diameter : 18.33mm

Operating temperature Charge : 0 to 50 oC

(recommended recharge release<45 oC)

Discharge :-20 to 75 oC

(recommended recharge release < 60 oC)

Storage temperature 1.5 year -30~25℃(1*)
3 months -30~45℃(1*)
1 month -30~60℃(1*)

Features  for 18650 3.7V 2000mAh Li-Ion Battery .


Parameters of battery cells:
Model:  18650
Capacity Nominal 2200 mAh
Dimensions: Diameter 18+/- 0.2 mm- Height 68+/- 0.2mm
Weight (Typical) Approx. 45g
Nominal Voltage Average 3.7V
Cut-off Voltage 3.0V
Internal Impedance less or equal to 180 milliohm (with PTC)
Cycle Performance 90% of initial capacity at 400 cycles
Cycle life > 500 cycles
Charge Current = 0.5C mA Voltage = 4.2 V End Current = 0.01 mA
Discharge Current = 0.5C mA End Voltage = 3.0V
Max. Charging current 1.5C ma
Max. Discharging current 1.5C ma (for continuous discharge)

Features  for 18650 3.7V 1500mAh Li-Ion Battery .

General Specification

Model Name
Max Capacity(mAh)
Minimum Capacity(mAh)
Max Charge Voltage(V)
End voltage(Cut off)
Nominal Voltage(V)
Max. Discharge Current
Dimension and Weight
Suitable for
E-cig,power tools,etc

Related Li-Ion Battery Cell

IFR32650 6000mAh 3.2V
IFR32650 5500mAh 3.2V
IFR32650 5000mAh 3.2V
IFR26650 3800mAh 3.2V
IFR26650 3600mAh 3.2V
IFR26650 3400mAh 3.2V
IFR26650 3300mAh 3.2V
IFR26650 3000mAh 3.2V
IFR26650 2800mAh 3.2V
IFR26650 2400mAh 3.2V
IFR22650 2200mAh 3.2V
IFR22650 2100mAh 3.2V
IFR22650 2000mAh 3.2V
IFR18650 1600mAh 3.2V
IFR18650 1500mAh 3.2V
IFR18500 1000mAh 3.2V
IFR14500 600mAh 3.2V
IFR14500 500mAh 3.2V
IFR14430 400mAh 3.2V

These cells have BIS certifications

Some cells with CE certification

Li-ion Battery

The batteries, packs, and chargers you are purchasing are for professional use.
You are supposed to have sufficient knowledge in handling the products.
You will only charge the batteries and packs in a fire proof container. You will not leave the product on wooden materials or a carpet environment that would help induce the spread of fire.
You will not put or use products in places adjacent to flammable materials and you will take caution, and wear protective cloths, glass, and gloves.
You will not leave the batteries, packs, and chargers unattended during charging and using.
When you want to use Li-ion batteries to make packs a Protective Circuit Board (PCB) is required.
Any modifications of battery, packs, and chargers will void the warranty.
If you make battery packs using the single Li-ion or Li-polymer cells and PCB from us, we are not responsible for the final battery pack performance and liability as the workmanship and assembly details could lead to defects.
Herculesi is NOT responsible for any damages and consequences caused by misuse.

Warning :

Make sure you DIY with correct polarity. (Negative polarity located at the top end)
Don’t use NiMH or Li-ion smart charger charge LiFePO4 cell/pack.
Wrong type of charger used may cause cell damaged.
You must limit discharging rate below Max rate
Please read more info about LiFePO4 battery


Seaworthy Carton to fully protect batteries on the way.

Each battery packed in polyfoam ,then put in 3 layer brown box,some related pcs put in 5-layer strong brown outer carton


1..by UPS/DHL/FEDEX( It takes 3-5 days to arrive after all details confirmed)
2.by air cargo( It takes about one week to arrive after all details confirmed)
3.By sea shipment ( It takes about one month to arrive after received the d eposit and confirmed all details.
4.Port:FOB Hongkong or CIF terms.
5.Shipment date within 30days for mass production .
6.Shipment date within 7-10days for testinng samples .

Factory directly sale rechargeable batteries 12v solar batteries 100ah  LiFePO4 Battery pack with handle carry


1,Q: What’s the main product in QS?

A: Rechargeable battery. Li-ion, Lipo battery and power battery pack.

2,Q: What is overcharge?

A: After charge, tested the batteries’ initial state and capacity. Charge to 10.0V at 3C current, then charge to 0.01C at CV mode. Observe changes in battery appearance.

3,Q: What is over discharge?

A: After charge, test the batteries’ initial state. When the batteries are normal, discharge to 0V at 0.5C. Observe changes in battery appearance

4,Q: Can I have a sample order?

A: Yes, we accept sample order to test and check quality. Batteries can be made as require.

5,Q: Do you have MOQ limit?

A: Yes, we have MOQ limit for mass production, but it depends on battery model. Please contact us for details.

6,Q: How about the lead time?

A: Samples will takes 5-7 business days. Mass production will takes 15-25 days. It depends on quantity.

7,Q: How about shipping and delivery time?

A: Generally, battery will be shipped via Express, such as DHL, TNT, FedEx and UPS, delivery time is 3-5 business days. Or DDP service, delivery time is 11-15 business days. Airline and sea shipping also available.

8,Q: What about after-sale service?

A: We will offer you 1 year guarantee. If there are any problems, please inform us, we will offer you positive solutions.

Application for :

1) Energy Storage: UPS , backup ,power station.

2) EV : Golf trolleys , Electric scooters .Electric Bike ,Electric tricyle ,Electric Motor.

3) Solar System,Wind Energy Storage,Solar/Storage Home System, Solar Street Light.

4) Telecommunications Base Stations.

5) General Energy Storage (Such as: Back-up Power, Miner’s lamp, portable power supply, digital products etc.)

Factory directly sale rechargeable batteries 12v solar batteries 100ah  LiFePO4 Battery pack with handle carry

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