MacBook Air M2 battery health dropped to 70% at only 113 cycles — is this normal?

Hi everyone,

I have a MacBook Air M2 (2022) bought in August 2024.

I'm confused about my battery condition.

Here are my details:

• Current battery health: 70%

• Cycle count: 113

• "Service Recommended" appeared

• No overheating

• No shutdowns

• The Mac still works normally

• I use it mostly for online classes

My questions:

1. Is it normal for battery health to drop this fast with such low cycle count?

2. Could this be calibration issues or a faulty battery from the beginning?

3. Do I need to replace the battery immediately or can I continue using it plugged in?

4. Is there any risk to the MacBook if I wait for replacement?

5. Also, is it safe to use my MacBook plugged in for 6 hours daily during online classes?

Any advice or people with similar experiences would help a lot. Thanks!