deicing control

We plan to install 2 100 ft. deicing cables at an off grid solar powered studio. Each cable is switched on by a controller that registers moisture and temperature. At start up each cable could draw 500 watt. I want to protect the system batteries (4 S460 batteries (700AH@20hr)) from being discharged below 30% of capacity. What controller can I put in line to prevent power from going to the deicing cables when battery storage is low?


  • BB.
    BB. Super Moderators, Administrators Posts: 33,439 admin
    Re: deicing control

    Accurately based on state of charge... There are a few battery monitors that can turn on/off an external signal based on state of charge (I think that both series below can be programmed for variable on/off levels):
    Otherwise, you will need to use a temperature compensated voltage controller (some charge controllers may work). Or simply time it (i.e., you can run the heaters for X hours and you will need Y hours to recharge).

    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset