OEM PVC Cylindrical Battery 26650*2 Cell 6.6Ah 3.2V Long Cycle Life SBS Type Emergency Lighting

Product performance:

1. Exceptional Cycle Life: Maximizing Longevity
2.Fast Charging and Efficient Energy Conversion: Maximizing Solar Harvest
3.Wide Temperature Tolerance: Versatile Performance
4.Low Self-Discharge Rate: Ready When Needed
5.Safety and Reliability: Peace of Mind
6.Reduced Maintenance Costs: Cost-Efficient Operation
7.Environmental Friendliness: A Sustainable Choice

Application:

1.Industrial type:

The application fie lds of 18650 lithium batteries are mainly portable CD players, video recorders, solar energy systems, highway and railway signal lights, medical devices, portable measuring instruments, audio devices, electric tools (such asElectric drill, rotary chisel, electric saw, etc.), cordless telephone, transceiver, detection and analysis instrument, electronic weighing instrument, electric model toy, physical detection and numerical control logging instrument, data acquisition instrument, communication and command instrument, specialCommunication network equipment, electronic testing equipment, space equipment.

2.Agricultural type:

18650 the application fields of lithium batteries in agricultural products mainly include cutting machines, electric pesticide machines, electric picking machines, bagging machines, loosening machines, electric sprayers, unmanned water meters, field storage motors and electric harvester.Cutting machine, electric drill, electric pump, etc.

3. Civil type:

18650 lithium batteries are widely used in domestic and civil applications, such as mobile phones, tablets, notebook computers, electric toys, MP3 / MP4, earphones, chargers, aircraft models, mobile power supply, flashlight, charging lights, intelligent water meters,Gas meter, electricity meter, real-time clock, backup memory power supply, various instruments, instruments, equipment, smoke alarm and intelligent instrument, remote controller, etc.

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

Lithium iron phosphate (LiFePO4, or LFP) are very well suited for use in emergency lighting. When compared with alternatives such as nickel cadmium (NiCd) and nickel metal hydride (NiMH), lithium iron phosphate (LFP) batteries have several advantages:

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

2. Self-discharge rates vary among rechargeable batteries. For LFP (Lithium Iron Phosphate) batteries, the discharge rate is only 3-5% per month, whereas NiCd (Nickel Cadmium) batteries can lose up to 20% per month thereafter (depending on temperature). Consequently, the charger in an emergency fixture equipped with NiCd or NiMH (Nickel Metal Hydride) batteries operates almost constantly, whereas in an LFP circuit, the charger works intermittently at low current.

Regarding charge efficiency, all batteries experience energy loss as heat during charging. LFP batteries exhibit very high charge efficiency at around 95%. In contrast, NiCd batteries demonstrate high charge efficiency primarily in the early stages of charging. However, once the NiCd battery reaches 70% capacity, it generates heat, causing charging efficiency to drop to approximately 85%. This discrepancy is noteworthy because under normal usage, a NiCd battery in an emergency light fixture undergoes continual trickle-charging to maintain it close to 100% capacity.

3.Long life

LFP batteries exhibit minimal memory effect, ensuring their performance remains nearly constant until they reach their end of life, typically defined as 70% of their rated capacity. Generally, an LFP battery maintains a lifespan of 8-10 years.

In contrast, both NiCd and NiMH batteries experience rapid declines in performance (power storage) with each charge/discharge cycle. As a result, they usually require replacement after 3 or 4 years. The mandatory routine testing of emergency lighting as per BS 5266 contributes to the shorter lifespan of NiCd batteries. Additionally, NiCd batteries in new construction projects often fail within the first year if they've been fully installed during the construction phase when mains power is typically completely switched off overnight. The nightly discharge and subsequent daily recharge significantly degrade NiCd batteries, potentially necessitating replacement within the initial year of use.

4.Extreme temperature performance.

High Temperatures: LFP batteries remain unaffected by ambient temperatures up to 60ºC, whereas NiCd and NiMH can only withstand 55ºC and 50ºC, respectively.

Low Temperatures: LFP batteries, NiCd and NiMH performs reliably down to -20ºC.

Environmental Impact: Cadmium, banned under the RoHS Directive due to its hazardous nature, is highly toxic to almost all animals and many plants. It persists in the environment as it does not readily combine with other elements to become harmless. Proper recycling with meticulous care is necessary for NiCd batteries. While LFP batteries also require recycling, the materials used are inherently less harmful than those in NiCd and NiMH batteries.

Lithium's Outlook: Lithium, especially lithium iron phosphate, is increasingly favored for its safety, cost-effectiveness, and efficiency. Its usage is on the rise not only in emergency lighting but also in various applications such as vehicles, indicating a promising and enduring future.