LiFePo4 Cells

LiFePO4 Chemistry

LiFePO4 is the formula name of Lithium Iron Phosphate, also known as LFP. It replaced other battery technologies because of its technological advancement and safety features. This latest technology is being used in a number of application from small devices consumer devices to heavy duty industrial machines. These cells have high density and light weight which enable this technology to use in multiple devices.

Cylindrical Cells

Cylindrical cells one of the most widely used lithium ion battery shapes due to ease to use and good mechanical stability. The tubular cylindrical shape can withstand high internal pressures without collapsing. Melasta produces multiple sizes and capacities according to the customer requirement. These cells are mostly used in Electrical vehicles such as golf cart and in power tools. 

Salient Features of Melasta LiFePO4 Battery

Melasta is one of the main producer and supplier for LiFePO4 batteries in China. Our batteries have the features due to our superior technologies and state of the art manufacturing facilities and investment on research and development.

1. Very long cycle life

Melasta LiFePO4 battery has very long lifespan due to its superior performance, and proven quality. it provides more than 2500 life cycles with 80% Depth of Discharge (DOD) at 25oC temperature.

2. Light Weight

These batteries are very light weight as compared to the Lead-acid batteries and all other old technologies. Due to this property these batteries are popular batteries in e-mobility industry to outperform the old technologies such as lead-acid batteries.

3. Environment Friendly

Melasta uses high quality material for battery production. These LiFePO4 batteries do not contain any hazardous material so these are fully environment friendly and recyclable batteries.

4. Wide Temperature Range -10C- to 60C

Operational temperature range is very wide it operates on extreme temperatures. The normal operational temperature range is from -10oC to +60oC. These batteries are also used as starter batteries in extremely cold temperatures.

5. Very Low Internal Resistance

These batteries have very low internal resistance which is very favorable for its safety. It delivers high current on demand and keep the battery temperature at normal level.

6. Maintenance Free                        

Normally old technology batteries such as lead-acid batteries required regular maintenance which increases the over cost of the battery system. Melasta Lithium Iron Phosphate Battery out performs the lead acid battery and provides the maintenance free solution. 


Available Models Description

High Drain Type Cylindrical LiFePO4 Battery

Item No.

Battery Model

Nominal Voltage

Nominal Capacity

Dimension

Charge Current

Quick Charge

Max Cont.

discharge rate

Max pus Discharge rate

Weight Approx (g)

Diameter

Height

(V)

(mAh)

(mm)

(mm)

1

IFR14500-5C

3.2

450

14

50.5

0.5C

1.5C

5C

8C

21

2

IFR18500-5C

3.2

1000

18.5

50.5

0.5C

1.5C

5C

8C

32

3

IFR18650-15C

3.2

1100

18.5

65.5

0.5C

1.5C

15C

20C

42

4

IFR18650-5C

3.2

1400

18.5

65.5

0.5C

1.5C

5C

8C

40

5

IFR22650-15C

3.2

1600

22.5

65.5

0.5C

1.5C

15C

20C

60

6

IFR22650-5C

3.2

2100

22.5

65.5

0.5C

1.5C

5C

8C

60

7

IFR26650-15C

3.2

2200

26.5

65.5

0.5C

1.5C

15C

20C

76

8

IFR26650-5C

3.2

3000

26.5

65.5

0.5C

1.5C

5C

8C

76

9

IFR32600-15C

3.2

3000

32.5

65.6

0.5C

1.5C

15C

20C

125

10

IFR32600-5C

3.2

3500

32.5

65.6

0.5C

1.5C

5C

8C

125

11

IFR32900-15C

3.2

4500

32.5

90.5

0.5C

1.5C

15C

20

188

12

IFR32900-5C

3.2

5000

32.5

90.5

0.5C

1.5C

5C

8C

188

13

IFR42120-5C

3.2

12000

42.5

120.5

0.5C

1.5C

5C

8C

355

Different Rate Discharge Curve


Discharge Curve at Different Temperature

Cycle Life Curve

0.5C Charge Curve

Technical Specification

These are the technical specification of the Melasta cylindrical cell model IFR2665E with 3800mAh capacity. 

 1. Electrical Characteristics

Nominal Voltage

3.2V

Nominal Capacity

3800mAh

Energy

12.16Wh

Internal Resistance

 ≤60mΩ

Cycle Life

>2000 cycles @0.2C 80%DOD

Months Self Discharge

 <3%

Efficiency of Charge

100% @0.5C

Efficiency of Discharge
96~99% @1C
2. Standard Charge

Charge Voltage

3.65V

Charge Mode

0.2C to 3.65V, then 3.65V,charge current to 0.02C5A (CC/CV)

Charger Current

760mA

Max. Charge Current

1.0C5A
Charge Cut-off Voltage

4.2±0.03V

    3. Standard Discharge

Continuous Current

760mA

Max. Discharge Current

3.0C5A

Discharge Cut-off Voltage

2.5V

 

4. Environmental

Charge Temperature

0to 45(32F to 113F) @60±25% Relative Humidity

Discharge Temperature

-20to 60(-4F to 140F) @60±25% Relative Humidity

Storage Temperature

0to 40(32F to 104F) @60±25% Relative Humidity

Water Dust Resistance
/
5. Mechanical

Dimensions (mm.)

27.0*66.5mm MAX

Weight (g.)

Approx:92g