Emergency Lighting Lithium Iron Phosphate Battery 18650 6.4V 1500mAh


Product parameters:

Product performance:

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.

--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.

3. 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

4. Fast charging. Lithium iron phosphate battery can be charged and discharged quickly with high current 2C. Under the special charger, the battery can be fully charged within 40 minutes at 1.5C.

5. High temperature resistance. The peak temperature of lithium iron phosphate can reach 350 to 500 ℃, while that of lithium manganate and lithium cobalt oxide is only about 200 ℃.

6. Large capacity. Lithium iron phosphate battery has a larger capacity than ordinary battery (lead acid, etc.), according to the capacity density of battery, the energy density of lead-acid battery is about 40wh / kg, and the energy density of mainstream lithium iron phosphate battery in the market is above 90Wh / kg.

How long do LiFePO4 batteries last?

Lithium has a long lifespan Super B lithium iron phosphate batteries live up to 5000 cycles at 80 percent depth of discharge, without decreasing in performance. The average lifetime of lead-acid batteries is just two years

Application fields:

1. Energy storage equipment: energy storage equipment of solar energy and wind power generation system, uninterruptible power system (UPS) used with solar cells as energy storage equipment (BYD has been producing such batteries).

2. Electric tools: high power electric tools (wireless), electric drill, weeder, etc.

3. Light electric vehicles: electric vehicles, electric bicycles, recreational vehicles, golf carts, electric pushers, cleaning vehicles, hybrid electric vehicles (HEV).

4. Small equipment: medical equipment, electric wheelchair, electric scooter, toys (remote control electric airplane, car, boat).

5.UPS and emergency lights, warning lights and lamp.

Performance Curves of LiFePO4 Cell:

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

2. LiFePO4 Cell Discharge Curve (Discharge at 0.2C )

3. LiFePO4 Cell Charge Efficiency At Different Temperature

4. LiFePO4 Cell Cycle Life Curve

5. LiFePO4 Cell Capacity Change At Smart Floating Charge At 55 degree