In addition, a low-cost package includes the external pdar controller, which provides the following features:

  1. better efficiency of the alternator at low speed (the pdar acts directly on the excitation current of the alternator).
  2. application of a three-phase charging cycle to fully and efficiently recharge the batteries using the alternator (charging cycle equivalent to that of a dock charger).
  3. measurement of the battery voltage directly across the battery to solve problems with diode charge distributors that induce a voltage drop and lead to undercharging of the battery
  4. temperature consideration to adjust the charging cycle (important for fast recharges such as the alternator)