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G'Day Matt,
Not sure how long you'll get out of the power pack, but if time becomes a problem, of course you can always go to a second battery pack. I'm using a 7AH Celestron power tank to drive my scope, and a 24AH jump starter pack to run my laptop and dew heater. I think the lappy is ther major load on that one!
I find that after about a 6 hour session, the 24AH pack can take over 24 hours to charge! I haven't driven the power pack down till the recharge warning light comes on yet in a session.
9.25 dew heater should draw what... say 1.5A flat out? My 8" one draws 1.1A flat out.
Al.
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