Change of topic to focus on Lead Acid.
Well, yes, ambient temperature comes into it. I boat in northern Puget Sound where the summer water temps are around 50 deg.F and air temp 60-70 deg.F out on the water. So in the bilge where the batteries are it will be cool as long as there is adequate ventilation.
So it is really a two part problem for the electric boat as I see it. 1) Protecting from overcharge/over temperature and 2) other fault detection.
After thinking about this, and in absence of other information, a reasonable starting point for monitoring and protection might be:
Monitor each battery's voltage and temperature.
Set limits for maximum charging voltage and temperature as read on any one battery and disconnect charging if one or the other occurs
Set limits for maximum variation in voltage between batteries
Visual and audible alarms to suit
The above to apply both to static recharge as well as in operation, especially when supplementing with a generator while motoring.
Open to thoughts and input here.
John A
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Posted by: John Acord <jcacord@gmail.com>
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