A fully charged Sonicare Elite electric toothbrush should provide approximately two weeks of brushing for two minutes of brushing twice a day. If it can't hold a charge long enough for any brushing, you have charged the battery incorrectly, the unit needs cleaning, or the battery is no longer good. Sonicare Elite batteries are not replaceable, but Philips, the manufacturer, says they should last for several years. If the battery still won't hold a charge even after you've cleaned the unit and have made sure you're charging the battery correctly, you might need a new toothbrush. Contact Philips before buying one, to further troubleshoot the problem and to discuss any warranty terms.
Plug the charger's power cord into a live electrical socket that supplies voltage as specified on the bottom of your charger. Do not use an outlet that is controlled by a light switch, or the power could be turned off before charging is complete.
Set the bottom of your Sonicare Elite securely in the charger so that it makes complete contact. The green charge indicator lights should light up in a blinking, rising pattern to indicate that the battery is charging. Do not remove the toothbrush from the charging station until the lights stop blinking and light up continuously, indicating the toothbrush is fully charged. If the battery is fully spent, it takes 24 hours to fully charge.
Clean the charger and handle to remove any build-up that could prevent the toothbrush from charging correctly. Use a damp cloth and a drop of mild soap to gently wipe both the toothbrush handle and charger. Allow the charger plenty of time to dry before plugging it back into an electrical socket.
Call Philips at 800-682-7664 if your troubleshooting doesn't resolve the charging problem.