A user has an old tablet that uses NiMH battery. The battery was working fine until lately, where it drains quicker even with minimal usage. The user explains that there are times when they performed partial recharges. You advised the user to replace the battery. Of the following, which term best describes this power drain issue?

  1. Memory effect
  2. Bulged battery
  3. Overheating battery
  4. Aging effect

Answer: A – Memory effect or battery effect is an effect on NiMH/NiCd batteries wherein they develop memory after multiple partial recharges. This issue makes the battery lose their maximum energy capacity (the battery “remembers” the smaller capacity).

Aging effect is an issue with Li-on batteries, but they don’t have memory effect issues.

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