This is the best I can do right now. I am in "No Wind Turbine" country now, AKA "suburbia."
So, more solar projects to come. Hopefully something like this one, only larger?
Ben.
They could both sit down together and spin the tires. All you need is lots of amps.
You could mount those HF panels overhead to make a Bimini top air foil.
A marine trolling battery with removable caps to add water will last longer.
A trolling battery with screw caps shouldn't spill if you tie it down properly, but you could always box it in and pour some baking soda around it just to be safe.[ Parent ]
Rgds
Damon"Once you have licked the windows of freedom your tongue gets stuck."[ Parent ]
The float voltage on my BZ MPPT drops way off based on temperature. It will stop in the low 13's on a summer day. The HF controller doesn't compensate based on temperature, which is also bad. In a cool climate, you can get away with that, but anywhere it gets hot, you'll really shorten battery life if you overcharge.
http://www.powerstream.com/SLA.htm has tables for flooded and sla batteries at 25C. How often you cycle the battery matters. If you have an sla that is used in a back-up power supply, then it will last many years if you keep the float in the low 13's to avoid water loss.
http://books.google.com/books?id=HNLXwAN4z8EC&pg=PA200&lpg=PA200&dq=float+voltage+versus +temp&source=bl&ots=4JFcJ4SdIL&sig=XRI3C7YaaM6UV9JZFS6yKviedpU&hl=en&ei=MzPaSqvB Cs2o8AbUw_22BQ&sa=X&oi=book_result&ct=result&resnum=5&ved=0CBYQ6AEwBA#v=onepage& amp;q=&f=false
If that link is too long Google "float voltage versus temperature William Knight" There is a chart at the link and scrolling to page 203 talks about thermal runaway of an sla caused by water loss from overcharging. That's what happened to Valterra - "my HF charger turned another, similar battery into a bubbling semi-sphere shaped stink bomb."[ Parent ]
:-)[ Parent ]
