|As you consider your energy storage options for off-grid solar applications, LifePO4 is the solution to meet your needs. Lithium iron phosphate is the clear choice for energy storage in off-grid applications for several reasons.
No matter the size of your system, lithium is the most cost-effective and efficient battery. LifePO4 has many benefits, including the lowest lifetime cost and unparalleled performance.
Lithium Iron Phosphate (LiFePO4) batteries are safer than Lithium-ion cells and are available in a range of huge cell sizes between 5 and 100 AH with much longer cycle life than conventional batteries:
Cylindrical LiFePO4 cells are one of the hottest products among all series, they have many great features:
Valuable LifePO4 Features
LifePO4 is able to cycle to 80 percent depth of discharge over 5000 times, which equates to over 13 years of performance. No other chemistries come close to competing with lithium’s battery life span.
As for performance, lithium is very efficient. Lithium batteries charge 30 percent faster than lead acid batteries.
While discharging, LifePO4 maintains the proper voltage. Under-load lithium batteries are able to deliver sustained voltages greater than nominal pack voltage, which varies depending on the design and chemistry of your lithium cell. Most lithium batteries have a nominal voltage of 3.6 V per cell. Higher voltage results in lower amperage, which is ideal for electrical components and circuitry. Lower amperage facilitates cooler operation, extending the life spans of your gadgets.
LiFePO4 Battery Charging/Discharging Main Parameters
Lithium Iron Phosphate is a type of Lithium-Ion battery, since the energy is stored in the same way, moving and storing Lithium ions instead of Lithium metal. These cells and batteries not only have high capacity, but they can deliver high power. High-power Lithium Iron Phosphate batteries are now a reality. They can be used as storage cells or power sources.
In addition, Lithium Iron Phosphate batteries are among the longest-lived batteries ever developed. Test data in the laboratory shows up to 2000 charge/discharge cycles. This is due to the extremely robust crystal structure of the iron phosphate, which does not break down under repeated packing and unpacking of the lithium ions during charging and discharging.
Uses Of LifePO4 Technology
Many off-grid solar applications are used for telemetry and remote monitoring of various systems for data retrieval. In these areas, LifePO4 is increasingly the go-to battery solution.
Built-in protections against low voltage and overcharge, coupled with a long battery life span, make lithium the most reliable option.
LifePO4 technology is leading the way into the future of energy storage. Save your money and time by choosing lithium for your off-grid storage needs.
The LiFePO4 battery has hybrid characters: it is as safe as the Lead-Acid battery and as powerful as the Lithium Ion battery. The advantages of large format Li-Ion (and polymer) batteries containing Lithium Iron Phosphate (LiFePO4) are listed below:
A. Conventional charging
During the conventional Lithium Ion charging process, a conventional Li-Ion Battery containing lithium iron phosphate (LiFePO4) needs two steps to be fully charged: Step 1 uses constant current (CC) to reach about 60% -70% State of Charge (SoC); Step 2 takes place when charge voltage reaches 3.65V per cell, which is the upper limit of effective charging voltage. Turning from constant current (CC) to constant voltage (CV) means that the charge current is limited by what the battery will accept at that voltage, so the charging current tapers down asymptotically, just as a capacitor charged through a resistor will reach the final voltage asymptotically.
To put a clock to the process, Step 1 (60%-70% SOC) needs about one to two hours and the Step 2 (30%-40% SoC) needs another two hours.
Because an overvoltage can be applied to the LiFePO4 battery without decomposing the electrolyte, it can be charged by only one step of CC to reach 95%SoC or be charged by CC+CV to get 100%SoC. This is like the way lead acid batteries are safely force-charged. The minimum total charging time will be about two hours.
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