ROSIE, AS A FELLOW CUSTOMER, I WILL GLADLY GIVE OF MY TIME IN HOPES OF RESPONDING TO YOUR POSTED INQUIRY IN A SUFFICIENT AND CONSIDERATE MANNER. WITH PERTINENCE TO THE "BRAUN"-SERIES 7 ELECTRIC SHAVER, IT'S TRULY BEST TO CHECK WITH THE MANUFACTURER FOR THE MOST APPROPRIATE ANSWERS TO THE EFFECT OF POTENTIAL PROBLEMS, AND, IF ANY SHOULD OCCUR, WHERE SHOULD IT BE TAKEN FOR REPAIRS; AND, BESIDES, THERE IS THE POTENTIAL CONSIDERATION OF THEIR WARRANTY COVERAGE AND IS DEPENDANT UPON THE NATURE OF YOUR SPECIFIC ISSUE. YOU MAY ALREADY BE AWARE OF THIS, AND PERHAPS MAY NOT HAVE DESIRED THAT KIND OF ANSWER. THOUGH, IT IS THE BEST AND AN HONEST ANSWER. FROM YOUR INQUIRY, THERE HAD BEEN NO POSSIBLE MANNER IN WHICH TO ASCERTAIN WHETHER ANY ISSUES ARE YET BEING EXPERIENCED. ROSIE, IF YOU'LL SEE MY REVIEW, YOU SHALL FIND MY OVERALL PERSPECTIVE ON THIS SUPERIOR, STURDY SHAVING SYSTEM. THERE ARE SOME VERY EASILY REPLACEABLE PARTS, BUT ALSO A BUILT-IN LITHIUM-ION BATTERY, WHICH SHOULD ORDINARILY LAST FOR SEVERAL YEARS, PLUS WITH EACH RELATIVELY BRIEF AC RECHARGE THE BATTERY HOLDS POWER DORMANT/IN USE FOR A GOOD LENGTHY TIME. IT'S, IN MY PERSPECTIVE, THE BEST SHAVER EVER AVAILABLE. OKAY. I SURELY DO TRUST I'VE BEEN CAPABLE OF HELPING YOU IN THIS REGARD. GOOD LUCK & ENJOY THE SPRING WEATHER.