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Energy Efficiency Lithium Fire Exit Light Batteries Lifepo4 Cells 26650 3.2V 6600mAh

Specifications

Brand Name :

Godson or OEM

Model Number :

2GS-IFR26650

Place of Origin :

Guangdong, China (Mainland)

MOQ :

50pcs

Price :

Negotiable

Payment Terms :

T/T

Material :

LiFePO4

Nominal Voltage :

6.4V

Nominal Capacity :

6600mAh

Cell Dimension :

26.5(W), 65.5(H)mm

Circle Life :

≥2000 times

Description

Lithium Fire Exit Light Batteries Lifepo4 Cells 26650 3.2V 6600mAh

LiFePO4 Rechargeable Battery 3.2V 6600mAh

Pos.	Product Parameters	Data
1	Standard Charge Mode	CC/CV
2	Cycle Life	≥2000 times
3	Operating Temperature	Charge:(0℃)-(45℃) Discharge(-20℃) - (+60℃) Storage Temperature: (-20℃) - (+50℃)
4	Cell Dimension	26.5(W), 65.5(H)mm
5	Cell Weight	≈250g
6	Expected Life	10 years
7	Packaging	Standard export package or customized package

List Of LiFeO4 High Temperature Cells

Type	Diemeter (mm)	Height (mm)	Voltage (V)	Capacity (mAh)	Operating Temperature (°C)
IFR14500	14.5	50.5	3.2	500	-20 to 60
IFR14500	14.5	50.5	3.2	550	-20 to 60
IFR14500	14.5	50.5	3.2	600	-20 to 60
IFR18500	18.5	50.5	3.2	1000	-20 to 60
IFR18650	18.5	65.5	3.2	1400	-20 to 60
IFR18650	18.5	65.5	3.2	1500	-20 to 60
IFR22650	22.5	65.5	3.2	2000	-20 to 60
IFR26650	26.5	65.5	3.2	3000	-20 to 60
IFR26650	26.5	65.5	3.2	3300	-20 to 60
IFR26650	26.5	65.5	3.2	3400	-20 to 60

LiFePO4 Battery Performance and Test Conditions

1. Standard test conditions

Test should be conducted with new batteries within one week after shipment from our factory and the batteries shall not be cycled more than five times before the test. Unless otherwise specified, test and measurement shall be done under temperature of 20±5℃ and relative humidity of 45~85%. If it is judged that the test results are not affected by such conditions, the tests may be conducted at temperature 15~30℃ and humidity 25~85%RH.

2. Standard Charge/Discharge

Standard Charge: 0.2C

Charging shall consist of charging at a 0.2C constant current rate until the battery reaches 14.6V. The battery shall then be charged at constant voltage of 14.6 volts while tapering the charge current. Charging shall be terminated when the charging current has tapered to 0.05CA. Charge time: Approx 7.0h, The battery shall demonstrate no permanent degradation when charged between 0 ºC and 45 ºC.

Standard Discharge: 0.2C

Battery shall be discharged at a constant current of 0.2C to 10V @ 20º ± 5C

Are lithium iron phosphate (LFP) batteries suitable for emergency lighting?

1. Energy efficiency.
LFP is more efficient than NiCd in two ways.

--Self-discharge. All rechargeable batteries lose charge over time, but the rate with LFP is only 3-5% per month. NiCd loses 15% in the first 24 hours, then drops to 10-20% per month (depending on temperature).

--Charging efficiency. During the charging process of any battery, energy is lost in the form of heat. the charging efficiency of LFP is very high, about 95%. the charging efficiency of NiCd is also very high, but only in the early stages of charging. Once the battery reaches 70% capacity, it starts to generate heat and the charging efficiency drops to 85%.

2. Long life.
LFP batteries have little to no memory effect, so their performance remains almost constant until the end of their service life, which is usually defined as 70% of their rated capacity. Typically, LFP batteries have a life span of 8-10 years.

Difference between LiFePO4 batteries and Li-ion polymer batteries:

Lithium iron phosphate (LiFePO4, LFP) batteries
Lithium iron phosphate is a lithium-ion polymer battery that uses LiFePO4 as the cathode material and a metal-backed graphite carbon electrode as the anode.
The LiFePO4 battery, also known as the LFP battery, is a rechargeable battery. It is the safest type of lithium battery on the market today. It is small, lightweight, and has a cycle life of thousands of cycles.

Lithium-Ion Polymer (LIPO) Batteries
A lithium-ion polymer battery is a rechargeable battery that works primarily on the movement of lithium ions between the positive and negative electrodes. Lithium-ion batteries use an embedded lithium compound as the electrode material. The commonly used lithium-ion battery cathode materials are lithium cobaltate (LCO battery), lithium manganate (LMO battery), ternary lithium-ion (NCA, NMC battery), and lithium iron phosphate (LiFePO4 battery).

Performance Curves of LiFePO4 Cell:

1. LiFePO4 Cell Charge Curve (Charge at 0.1C)