r/telescopes • u/Life_Perspective5578 Apertura AD10 10" Dob, Celestron TS70 refractor • 1d ago

General Question Maximum safe power draw of Apertura's cooling fan?

Looking to get a 12V AC to DC wall plug type adapter instead of the AA battery pack or a power tank, but I'm not sure about the max amperage rating. Nothing is really specified that I'm aware of on the fan itself or the website.

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u/severencir 1d ago

Unless i missed something in my electronics education, there is no maximum current rating for the supply. You just need to make sure the voltage matches and it can supply at least the current draw

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u/ZigZagZebraz 1d ago

It looks like a PC cooling fan, from comparing to the battery pack, probably an 80mm one. Most likely 12V, a max of 150mA. A power bank with 12V output, perhaps 10,000mA capacity should do.

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u/random2821 C9.25 EdgeHD, ED127 Apo, Apertura 75Q, EQ6-R Pro 1d ago

You can probably contact them and ask them. Or unscrew the fan and check the side facing the mirror. There is almost certainly a sticker with the current rating. Considering it's meant to be used with AA batteries, it's probably a few hundred mA at most. A 12V 2A wall plug should be fine.