according to the explanation, once your phone reached 100% it will stopped charging and let your phone drop up to 95%, only god knows how long your phone will be dropped to 99%, can take hours
But it doesn't have a shield icon when it reached 100% which indicate that it's still charging. When I'm on maximum protection, once it reaches a specific % I set, it shows a shield icon which indicate that it stop charging. But I really dont know if that how it works because there's only a limited information provided.
