Does anyone have any experience with the B & D 24 volt rechargable lawn mower. model # cmm1200? I have replaced the batteries and the mower woks fine, but the charger does not seem to charge the batteries. The indicator lights on the charger don't light up and I don't get any voltage when I test the connector end. I'm wondering if its the charger itself or the electronics in the connection on the mower handle.