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Originally Posted by wetwarev7
hmmmm..... :hmm:
Just to throw a monkey wrench into this whole thing, does the battery meter on a sub measure current or voltage? I would imagine that it would measure voltage, otherwise you would have a constant drain on the battery(a current meter has to have current run thru it to measure it). If it IS a voltage meter, the current capcity of the battery would have very little effect on it, except in extreme conditions, i.e. extreme cold, extreme old age for the battery, etc, so you would have hit 100% voltage, even before you reached 100% current capacity(like 90-95%).
I think I just confused myself.....  |
Just to toss the monkey wrench back, and I mean nothing by it, I don't know for sure the answer to your question. I think the stock game displays a voltmeter, and I remember someone's mod replacing that with an ammeter. Surely there would have been both on the boat.
A voltmeter in those days (and well into the 1980's) was just an ammeter with a humongous resister added to the circuit. Both meters relied on current flow through a coil to create a magnetic field that would deflect the needle. The difference was in the way the meter was calibrated.
A voltmeter would draw less current than an ammeter but the difference was trivial to the capacity of the batteries. Turning on one overhead light for 10 seconds would take more power than the battery meters would in the life of the boat.
The voltmeter would tell how much energy was left in the batteries and the ammeter would indicate how fast it was being used. If the electric engines were off, the ammeter should read zero, while the voltmeter would read high. Really the voltage would not tell the whole story, the common test for energy capacity was the specific gravity of the electrolyte.