How exactly did you have it tested ? "Good" can mean a whole range of things, some of them will not be functional under actual use.
It holds at 14.7v when tested I bought a full dynastic tool for when I had change brake and I run a battery test on it I never had any trouble out of the hybrid battery just trying get money up I run it in a ditch going about 90 and messed up front end so was part it out
Wait ......that sounds like the 12 V battery, NOT the "hybrid" battery. AND that voltage measurement can ONLY occur when the car is running, so it is a measure of the charging system and NOT of the battery itself. IF......the battery is disconnected and it still reads 14.7, then you need a new meter........or new glasses !!
