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Battery Condition Alert
I have a Reatta that, seemingly under the best of conditions, draws a fair
amount of resting current. Too darn many systems involved I guess. I don't drive it that often, and yesterday after letting it sit for several weeks, I found that the battery was flat. It charged right back up and started like a champ, but I got to thinking that I could probably cobble up a voltage comparator that would constantly measure the battery voltage, drawing almost no current. When the voltage drops below some preset value, the comparator would activate and an audible alarm would sound. The percent of charge is related to the voltage at a constant temperature by a simplified equation: Vt = Vc + C Where Vt is the voltage measured at the terminals Vc is the voltage at which the battery is considered to be totally discharged at the same temperature and C is the percentage of charge, expressed as a fraction. |
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#2
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Battery Condition Alert
Sorry, this message was not intended to be posted.
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#3
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Battery Condition Alert
Found this smart switch that could well be worth the money in my case.
http://www.batterystuff.com/battery-...S12vProSP.html |
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