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Batavus Battery Installation

 
 
This is the wiring diagram and process I used to add a battery to my Batavus. It works but if anyone can see any problems or modifications that would make this system better, please email me with the details. WARNING: This system is experimental. I take no responsibility in the accuracy or damage this system may cause to you Bat.
Updated: 6/7/01
This is the standard wiring diagram for the Batavus moped. Click on photo for a larger printable view.


This is a battery upgrade for the Batavus moped. No wires need spliced because you can use spade terminal ends to wire into the terminal blocks. Since the brakes aren't used that often the brake light coil doesn't do any work during most of your riding time. This makes it ideal for charging a battery. I used parts from a turn signal module to build my system, but am in the process of changing the circuit with the help of  feedback that I'm receiving.

I'd like to thank Ron for his helpful insight on some of the pitfalls in designing this system.

  • S1 is a double pull/double throw switch. It switches between charging the battery and taking the battery completely out of the brake light circuit. Note: The brake light operates off the battery when switched to the charging mode.
  • S2 is a double pull/double throw switch also. It switches the headlight and tail light between the battery and the magneto coils. I use this switch in a high/low beam type of application. When I'm up to speed at night I leave the magneto do the work. Then when I'm in town with stop and go traffic I switch to the battery at the stop lights. 
  • B1 is a 6V Gel cell battery.
  • D1 is a 25V 3Amp blocking diode or rectifier that keeps the battery from discharging back through the coil. Also it changes the AC coil voltage to DC for charging the battery.
  • D2 is a 6V 3Amp zener diode that regulates the voltage.


 
 
 
Wiring diagram for the battery system.

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