Quote:
Originally Posted by glend
As far as the battery system is concerned, I am using a little 12v 7AH alarm system battery and it will drive my NEQ6 for an hour or two before needed a recharge. You can buy all sorts of power leads from Jaycar, even ebay. The big jump start battery packs will work as well but they are more expensive than an alarm system battery.
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I'm surprised that a 7 Ah battery is only "good for an hour or two" before needing a recharge. How many amps does the HEQ5 mount draw on average?
My Celestron SLT mount (which is smaller than the HEQ5) draws a bit over 1 amp peak (when slewing at maximum speed), but less than half an amp when tracking. I use a 7 Ah battery that I got from Jaycar for about $25, and it is good for at least 8 to 10 hours of use between charges. (Probably even more - it hasn't gone flat on me yet!) Jaycar sell a whole range of sealed lead acid batteries (SLA), including 20 Ah or more, as well as the chargers that you need.