[41south]

Hello gentlemen

Yes indeed I should mention the protection mechanisms already built in.

The solar charger unit provides charge over voltage protection which is set at 12.6v for these batteries. It also provides over-discharge protection set at 9.2v as per the recommendations of my battery supplier. The unit disconnects the load at that level. It will not reconnect until 10.5v currently - this is all automatic and well tested by me. There is also over current protection for both charge and discharge. 
What is not here (but will be very shortly) is the balancing board. I have these ordered and will fit them shortly. Temperature wise the solar controller has an internal temp sensor but I will look at something for the batteries perhaps as well - thanks for that suggestion!

And indeed flying red cans are not a good sight, I will avoid them at all cost 

Thanks again for the feedback and comments

Colin