Quote:
Originally Posted by Robert9
John,
I have to disagree with you. A 17AHr battery is quite happy delivering power at the 10% rate ie 1.7A, and can do so over a period of a few hours. Now, I don't know what the drain would be on the battery while running the EQ6, but I would guess that it does not exceed 1A. Furthermore, the high current is only being drawn while the motors are running, which only happens in short bursts while sky-hopping. The power drawn while tracking I feel, would be very much less than this, so I can't see that a standard battery should be at such risk. The great proviso is, as was said, that they are not left in a discharged state for any extended period of time due to the risk of sulphating the plates.
My thoughts are that if Ian's battery in his power tank died prematurely, he may have just had a baddy, or alternatively, he didn't keep it charged.
Robert
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Robert,
I'm happy to say that we're both right
If only used as you've said, the standard battery will probably work just fine, but.......................and there's always a but, if the unit is used in anything but mild temp's the battery doesn't last as long as a Deep cycle one.
Batteries don't like the cold, the thicker plated ones (D.C) hang onto their charge a lot better.
The other matter is that I'm sure (rather quickly) that other power hungry units will be added to the batteries drain (heaters, etc) these will all work better and longer on the D.C batt.