Where does the solar energy power go to when all the batteries are fully charged?

#1
I have just spotted a thread on one of the facebook motorhome forums where someone has asked "where does the excess solar energy power go to when all the batteries are fully charged"?

Some replies to the above are suggesting it can be used to power low energy devices such as computer cooling fans etc., but if this is the case, how and where do you connect the wires to?

Might be a daft question, but at least it might get one or two brains churning over on these cold wintery days.

Phil
 

wildebus

Full Member
#2
It is typically simply wasted. I have 400W on the roof and on a typical summers day I am fully charged by 10 or 11AM.

My solution? Use a similar approach as if you had an Economy 7 type setup and plan your useage accordingly...
  • Use an electric hob to make your breakfast - the power used will get put back during the day
  • Same again for Lunch
  • Use a slow cooker during the day to make your evening meal
  • Any devices that need charging, make sure you do it as early in the daytime as possible.
I also have my Electric Hot Water system and can put the power switch in "position I" which is only goes active when the batteries are at 99% and then turns off at 94% so essentially can be set to act as an energy dump.
 


#3
Just like a house,the power is behind the socket just waiting for the vacum cleaner to be plugged in .
So the power is in fact switched of at the control unit once battery are full,it will reconnect when juice is used but only during good daylight.
Hope this post helped.
 


voyager

Full Member
#4
You don't connect the wires anywhere, just leave them connected the way they are. If you want to use a computer or cooling fan then simply connect to the leisure battery and when they drain the battery then the solar will charge the battery back up again.
 


time4t

Full Member
#5
You can get water heating elements which are around a 100 watts.
fit them in the hot water tank & they'll help to cut the amount of gas used to heat your water for showers etc.,
I don't know how they are wired up but hopefully someone will be along to help with that.

Phill
 
#6
You can get water heating elements which are around a 100 watts.
fit them in the hot water tank & they'll help to cut the amount of gas used to heat your water for showers etc.,
I don't know how they are wired up but hopefully someone will be along to help with that.

Phill
They connect to the battery as every thing does,once the battery is full a sensing device switches the element on and then of at a set voltage to save the battery,bit silly in my eyes as power is best saved for tv lights blown heaters etc,water is best heated with gas.
Mind you i have a 12v wash heater in my loo room which is on a switch at dash though i could forget some day,something else to look at in future.
 

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voyager

Full Member
#7
I have heard of a skeleton in the cupboard but a skeleton in the loo is new to me.:LOL:
 


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