What's LiFePO4 Battery?
by Evlithium Zhang
Posted: Oct 15, 2018
Posted: Oct 15, 2018
LiFePO4 Battery is Lithium Iron Phosphate Battery.Get high quality 40Ah to 1000Ah LiFePO4 Battery from us. The highly protected batteries exhibit superior performance with an extended battery life. We offer extensive warranties on each of our products. Contact us to find the best of prices for LiFePO4 Battery. We also offer sample orders on request for customers to assess the products and accessories. Get the export quality LiFePO4 batteries from the most reliable supplier. Buy low cost heavy duty Lithium Iron Phosphate rechargeable battery of various capacities. In 1996, the University of Texas (and other contributors) discovered phosphate as cathode material for rechargeable lithium batteries (LiFePO4 Battery). Li-phosphate offers good electrochemical performance with low resistance. This is made possible with nano-scale phosphate cathode material. The key benefits are high current rating and long cycle life, besides good thermal stability, enhanced safety and tolerance if abused. Li-phosphate is more tolerant to full charge conditions and is less stressed than other lithium-ion(LiFePO4 Battery) systems if kept at high voltage for a prolonged time. As a trade-off, the lower voltage of 3.2V/cell reduces the specific energy to less than that of Li-manganese. With most batteries, cold temperature reduces performance and elevated storage temperature shortens the service life, and Li-phosphate is no exception. Li-phosphate has a higher self-discharge than other Li-ion batteries, which can cause balancing issues with aging. Figure 9 summarizes the attributes of Li-phosphate. Li-phosphate is often used to replace the lead acid starter battery. Four LiFePO4 Battery in series produce 12.80V, a similar voltage to six 2V lead acid cells in series. Vehicles charge lead acid to 14.40V (2.40V/cell) and maintain a topping charge. With four Li-phosphate cells in series, each cell tops at 3.60V, which is the correct full-charge voltage. At this point, the charge should be disconnected but the topping charge continues while driving. Li-phosphate is tolerant to some overcharge; however, keeping the voltage at 14.40V for a prolonged time, as most vehicles do on a long drive, could stress Li-phosphate. Cold temperature operation starting could also be an issue with Li-phosphate as a starter battery(LiFePO4 Battery). Lithium Iron Phosphate technology is that which allows the greatest number of charge / discharge cycles. That is why this technology is mainly adopted in stationary energy storage systems (self-consumption, Off-Grid, UPS, etc.) for applications requiring long life. The actual number of cycles that can be performed depends on several factors: Pevel of power in C-Rate Depth of Discharge (DOD) Operational environment : temperature, humidity, etc. In standard environment, and for 1C cycles, we can get from the chart the below life cycle estimation for LFP2000 cycles at 100% DoD: 3000 cycles at 80% DOD 8000 cycles at 55% DOD It should be noted that following the number of completed cycle, the batteries still have a nominal capacity> 80% of the original capacity. The LiFePO4 battery uses a lithium-ion-derived chemistry and shares many advantages and disadvantages with other Lithium-ion battery chemistries. However, there are significant differences.
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