... ) Remote control uses (2) types of batteries, 1. moblile phone type battery (A123) 12v. for A,B,C buttons operation, this ... distance is found to be significantly shorter, replace battery immediately. The 3.6v rechargable battery operates the C button, this is the ... , an alarm sound from the ring on 3.6v battery sounds, the battery is exhausted and should be recharged.3) Owners, do ...