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Thanks for that.. the one I am thinking of getting is 12Ah whereas I note that the two Celstron tanks are 7Ah or 17Ah... difference in price though is the one I am looking at at $39 to between $200 to $300 for one with Celestron written on it. I gather the Ah relates to how laong it is usable between charges... am I right?
Regards PaddyC
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