Never charging a laptop battery above 80 percent increases its lifespan
the verdict
SUPPORTED
the evidence backs this
confidence 81/100
Limiting the state of charge by not charging lithium-ion batteries to their maximum capacity helps reduce degradation and extends their overall lifespan.
Evidence for · 2
Degradation factors of commercial lithium-ion batteries
2025 · cited by 8
Paper 8 notes that state of charge (SoC) and operating conditions are key extrinsic factors directly influencing lithium-ion battery degradation and lifespan.
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More for · 1
Performance and Life Analysis of Lithium‐Ion Batteries Aided by Data‐Driven Analysis
2025 · cited by 2
Paper 11 identifies state of charge and charging protocols as primary parameters affecting the performance and capacity fading of lithium-ion batteries.