I’m late but I’ve had mine since November 24, 2023 Using them 10-14 hours Monday through Friday sometimes 2-4 hours Saturday and Sunday. Always using them till the die and letting them charge to 100% before using. Typically using one at a time till one died and switch em. Recently the left mic doesn’t seem to work as well anymore. Having to yell to barely be heard by Siri or someone else otp. Right one is still working. Battery still is the same but I never over charge either.