High State of Charge (SoC) Charging and Its Impact on Battery Chemistries
High State of Charge (SoC) charging can affect various battery chemistries differently, but lithium-ion batteries are particularly sensitive to such conditions. Here’s a breakdown of how high SoC charging impacts lithium-ion batteries and other chemistries:
Lithium-Ion Batteries
- High Voltage and SoC: Higher charge voltages can boost capacity but compromise cycle life and safety in lithium-ion batteries. Prolonged exposure to high temperatures, especially at a high SoC, accelerates chemical reactions inside the battery, leading to faster degradation and reduced cycle life.
- Charging Practices: Charging a lithium-ion battery to 100% regularly can reduce its lifespan compared to keeping it between 20% and 80%. Cycling between 85% and 25% SoC provides a longer service life than charging to 100%.
Other Battery Chemistries
- Lead-Acid Batteries: These are less commonly affected by SoC due to their simpler chemical structure but may suffer from deep discharging.
- Nickel-Based Batteries: Though less sensitive to SoC than lithium-ion, they can still experience capacity loss over time due to high charge states, albeit less severely.
Emerging Trends
New battery chemistries like solid-state and lithium-iron phosphate are being developed to mitigate some of the issues related to high temperature and SoC charging. However, specific vulnerabilities to high SoC charging are less documented compared to lithium-ion.
Overall, lithium-ion batteries are more sensitive to high SoC charging due to their complex chemistry and the impact of high voltages. Other chemistries may also experience degradation but typically to a lesser extent.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/are-there-specific-battery-chemistries-that-are-more-affected-by-high-soc-charging/
