Two of the most popular battery choices for embedded systems are lithium-ion batteries (Li-Ion) and lithium iron phosphate batteries (Li-phosphate or LiFePO 4).
What are the different types of batteries for embedded systems?
Two of the most popular battery choices for embedded systems are lithium-ion batteries (Li-Ion) and lithium iron phosphate batteries (Li-phosphate or LiFePO 4 ). These two types of batteries have very different charging and discharging characteristics, although they have similar chemistry and use some of the same materials.
What are secondary batteries?
Hence, secondary batteries are also known as rechargeable batteries. Depending on what chemicals are used in the battery, they can be suitable for different uses. For example, alkaline batteries are widely used in consumer devices. Other types of batteries include lithium, zinc-air, or silver-oxide batteries.
What is a lithium ion battery?
When most people refer to “Li-ion” batteries, they could be talking about any of the of lithium ion battery types. The most common for consumer applications is lithium cobalt oxide (LiCoO 2 ). This is the cathode material in common these types of lithium battery. Here are some of the typical specifications for Li-ion battery cells:
The last time I skimmed through a Digi-Key catalog, the battery section contained more than five thousand unique battery products with a seemingly endless variety of sizes, voltages, chemistry and functions. Given the vast array of battery options, it's reasonable to ask, “How can I find the optimal battery for my application?”
What are the specifications for lithium ion battery cells?
Here are some of the typical specifications for Li-ion battery cells: Charge Rate: 0.7 C - 1 C. Charging above 1 C will cause the solid electrolyte interphase (SEI) layer on the anode to grow during charging, which traps lithium and reduces capacity over time. This is a primary source of battery capacity fading in lithium cobalt oxide batteries.
Summary of Common Battery Types Wide temperature operation. High internal impedance (low pulse current). Good pulse capability, stable voltage during discharge. Very low self discharge rate. Can support 20 year battery life. High energy density. Relatively short battery life (e.g. weeks to months).