Hi darylm. It may be misleading to generalize from personal experience regarding battery life.
I have used my connect clip almost continually for several years. I bought it when I was fitted with OPN 1 shortly after their introduction. At that time the connect clip needed recharging every four to eight hours depending on in which mode it was being used. Now it needs to be recharged every one to two hours. This connect clip has always been recharged and maintained according to Oticon guidelines. It has always been recharged as soon as the indicator light goes orange/red and has been fully charged each night.