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Rechargeable Fire Exit Light Batteries IFR 18650 3.2V 3C 1600mAh Lithium Battery

Specifications

Brand Name :

Godson or OEM

Model Number :

LiFePo4 IFR18650 3.2V（3C）1600mAh

Place of Origin :

Guangdong, China (Mainland)

MOQ :

50PCS

Price :

Negotiable

Payment Terms :

T/T

Type :

LiFePo4

Capacity range :

≥ 1600mAh

Voltage range :

≥ 3.290v

Internal resistance range :

≤ 28m Ω

Cell Dimension :

18(W), 50(H)mm

Expected Life :

10 years

Description

Rechargeable LiFePo4 IFR18650 3.2V(3C)1600mAh With High Cost-Effective

Product parameters:

Pos.	Product Parameters	Data
1	Standard Charge Current	0.1C for 16 hours
2	Cycle Life	≥2000 times
3	Operating Temperature	Charge:(0℃)-(45℃) Discharge(-20℃) - (+60℃)
4	Storage Temperature	(-20℃) - (+50℃)
5	Expected Life	10 years
6	Cell Dimension	18(W), 50(H)mm
7	Cell Weight	≈10g
8	Packaging	Standard export package or customized package

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

Lithium iron phosphate (LiFePO4 or LFP) is well suited for emergency lighting. Compared to alternatives such as nickel-cadmium (NiCd) and nickel-metal hydride (NiMH), lithium iron phosphate (LFP) batteries offer several advantages:

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). The result is that the charger in an emergency unit with NiCd or NiMH batteries operates almost continuously, while the charger in the LFP circuit operates at low current during short and infrequent bursts.
--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%. This is important because in normal use, the NiCd cells in emergency light accessories will continue to trickle charge to keep them near 100% capacity.

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.
--The performance (storage) of NiCd and NiMH decreases rapidly with each charge/discharge cycle, so they typically need to be replaced after 3 or 4 years. the emergency lighting routine testing required by BS 5266 helps shorten the life of NiCd batteries. NiCd batteries in new construction projects that have been fully installed during the construction phase typically fail in the first year of their service life, when the main power supply is usually completely shut down overnight. The resulting overnight discharges and daily recharges can degrade NiCd batteries to the point where they can be replaced in the first year of use.

3. Environment The RoHS directive prohibits the use of cadmium because it is a dangerous contaminant.
--Cadmium is highly toxic. Cadmium is highly toxic to almost all animals and many plants. It is also very persistent in the environment and does not easily combine with other elements that make it harmless. Therefore, NiCd batteries must be recycled very carefully. lFP batteries must also be recycled, but the materials used are inherently less hazardous than those used in NiCd and NiMH batteries.
--The future use of cadmium is limited. Since quality alternatives to cadmium are available for batteries, it is expected that the RoHS directive will be amended to remove the exemptions allowed so far.
--Lithium has a long future. In particular, lithium iron phosphate is favored for its safety, economy and efficiency and is increasingly being used in many applications, such as vehicles, in addition to emergency lighting.

4. Extreme temperature performance.
--High temperature, LFP is not harmed by ambient temperatures up to 60ºC, while NiCd and NiMH can only withstand 55ºC and 50ºC, respectively.
--Low temperature, LFP performs well down to -20ºC, but NiCd and NiMH cannot provide the power needed to run emergency lighting below 0º

Rechargeable Fire Exit Light Batteries IFR 18650 3.2V 3C 1600mAh Lithium Battery

Performance Curves of LiFePO4 Cell:

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