Electricity

Circuit 12 V bipolar (2 pole insulated including the motor circuit).
Electrical panel with bipolar leakage tester.
   
* 3 105Ah maintenance-free batteries
    
* Voltmeter and ampmeter on each of the two circuits (motor operation)

    * Aerogen 6 Wind  Generator  (2005), 
    * Solar Panel (1993) AEG 48W Mobile
    
* Solar Panel (2005) 120W 
    
* charge controller (wind / solar) (2005)
    
* Dock
Charger (1988) CRISTEC
    
*  electronic controller TWC-2 (1992), load balancer, ammeter control.
    
* UPS 220V 300W (2006)
   
  * NASA battery controller 

    * Raritan Water Heater (1982): 48 liters to 75 ° (by engine or 220V).
    
* Hot and cold pressure shower in kitchen and shower (Jabsco pressure group in 2005).
    
* Vacuum cleaner 12V
    
* 12 V cigarette lighter type for all connections.
 



While cruising, out of marinas and their facilities, the storage capacity is less important than production. Multiplying the number of batteries often generates more problems than it solves (weight, cost, size, load management, ...).
On the production side, the combination of wind + solar is quite good, the wind is usually sufficient to offset the consumption except downwind in light air. In this case, and the anchorage, the solar panel provides a welcome addition.
Consumption has been minimized by the use of LED lamp for the anchor light and navigation (2006) and lighting inside.
We almost never use the engine for  battery charging.