Fast charging accelerates the capacity degradation of lithium-ion smartphone batteries compared with slower charging.

Is it true that fast charging accelerates the capacity degradation of lithium-ion smartphone batteries compared with slower charging?

Partly. Several peer-reviewed studies report that fast or high-rate charging accelerates degradation mechanisms such as lithium plating and capacity fade in lithium-ion cells, while one study of lithium iron phosphate cells found a fast-charging technique introduced no significant degradation. The evidence covers specific cell chemistries and laboratory conditions rather than smartphone batteries generally.

Verdict: CONTESTED PARTIAL · 3 sources for, 2 against · Last checked 2 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Wang, M., Wu, S., Chen, Y., Yao, Y., Luan, W., & Chen, H. (2026). Insights into gas generation and self-absorption in lithium-ion batteries after fast charge aging: Mechanism and implications. doi.org. https://doi.org/10.1016/j.jaecs.2026.100488

Enabling 4C Fast Charging of Lithium‐Ion Batteries by Coating Graphite with a Solid‐State Electrolyte. (n.d.). cir.nii.ac.jp. https://doi.org/10.1002/aenm.202102618

Gas Evolution and Swelling Mechanisms in Lithium-Ion Power Batteries during Long-Term High-Rate Cycling. (2025). doi.org. https://doi.org/10.1149/ma2025-0223542mtgabs

Modeling Lithium Plating Onset on Porous Graphite Electrodes Under Fast Charging with Hierarchical Multiphase Porous Electrode Theory. (2023). doi.org. https://doi.org/10.1149/1945-7111/ad1e3d

Fast charging technique for high power lithium iron phosphate batteries: A cycle life analysis. (2013). doi.org. https://doi.org/10.1016/j.jpowsour.2013.03.044