Ways to maintain the performance of your phone and laptop batteries

Phone and laptop batteries are typically made of lithium-ion, which are rechargeable and constitute the predominant battery type for these devices due to their extended lifespan, higher energy density, and lighter weight compared to other battery types.

In this discussion, I will present charging strategies to maintain the health of your phone battery.

It’s important to recognize that each charge and recharge cycle slightly degrades lithium-ion batteries, as it is inherent to their chemical composition. Hence, lithium batteries are considered consumable items, like toner or printer ink cartridges.

Moreover, the degradation is worse when batteries are discharged below 20%, especially below 10%, or charged to full capacity. This is why battery management systems in vehicles often maintain the charge between 20% and 80% of the maximum rated capacity.

However, there are nuances to consider. Smartphone manufacturers typically incorporate a buffer into the displayed charge level; when your phone indicates 20%, it may actually be closer to 25% or even 30%, accommodating for the battery’s natural capacity loss over time.

Nevertheless, discharging a lithium-ion battery below 20% does inflict damage and reduces its lifespan, with discharges below 10% having even more adverse effects.