Battery Issue

avnieve wrote:

My 2017 13" Macbook Pro shuts off without warning and has been serving me a message that my battery needs service. When I checked the cycle count, it is only 343 of the 1000 cycles that model should have before retiring the battery. What could be causing this? I do not even get a message telling me I should plug in my adapter when the battery is running low. The machine just shuts off. Ideas?

Sounds like an issue with the battery—

See if you qualify:

13-inch MacBook Pro (non Touch Bar) Battery Replacement Program- October 2016 and October 2017

https://support.apple.com/13inch-macbookpro-battery-replacement

If the battery in your 2016 or 2017 MacBook Pro won't charge past 1%—

The battery health status on these devices will also indicate "Service Recommended."

Published Date: February 09, 2021

https://support.apple.com/en-us/HT212163

Learn how to get your Mac fixed and how much it will cost.

https://support.apple.com/mac/repair/service

Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095

avnieve wrote:

Thank you. Unfortunately, my serial number is not eligible for that program. Yes, I agree it's an issue with the battery but wanted to note that the cycle count is only 1/3 of the battery life with at 343 of the 1000. Any other ideas on things that may help?

1000 cycle count is the expected, not guaranteed . Batteries can fail at anytime.

Contact Apple if you want to proceed.