Why does my Apple Ultra Watch keep charging to 100%?
My Optimizes Battery Charging is turned on, however, my watch is always charging to 100%. For awhile it charged to 80%, but not now.
Apple Watch Ultra, watchOS 9
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As on your iPhone optimized battery charging gets to know your charging routine so it knows when to charge to 100% Apple Watch is designed to only charge to 80% until it recognizes your charging routine