Power banks

[Sbarra]

hello everyone,

 

i am making an upgrade to an equatorial mount from my current star tracker.Im getting the skywatcher HEQ5 and it requires a power source. Im trying to keep costs down when looking at a power source for the mount. i have Milwaukee M18 batteries and can get this adapter. will this be good or do i need to look at something else?

https://www.peaveymart.com/outdoor-equipment/generators/inverters/milwaukee-m18-top-off-175w-power-supply-tool-/3521961?gad_source=1&gclid=Cj0KCQjw8pKxBhD_ARIsAPrG45n-RaQe6-LjTvYg_VBvlVb0lvHzK5KlVI0i-7JGBB5uXJtH3z49qBQaAkt2EALw_wcB&gclsrc=aw.ds

 

[michael8554]

That's a good idea, but it's not a complete solution.

Your mount requires 12V to 15V DC.

The USB-C provides 45W at presumably 5V, they don't specify.

So you might need a 5V to 12V-15V DC Converter.

The 120V AC out could power your laptop.

Michael

Edited April 21 by michael8554

[Cornelius Varley]

7 minutes ago, michael8554 said:

So you might need a 5V to 12V-15V DC Converter.

Would this provide the minimum 2 amps required by the mount ?

 

8 minutes ago, michael8554 said:

The 120V AC out could power your laptop.

Or power a suitable 12v psu.

[Cosmic Geoff]

No need to invent unconventional solutions.  Many people use mains power to +12v regulated power packs.  Or car engine starters which deliver +12v.  Or dedicated astro power tanks, the LiFePo rather than lead-acid varieties being increasingly favoured.

[wookie1965]

https://www.picstop.co.uk/telescope-power-accessories/celestron-powertank-lithium-lt.html?gad_source=1&gclid=Cj0KCQjw8pKxBhD_ARIsAPrG45mfjPh1XClUFi17vl4_d5u9gLY14eizKCIEFWpjfdtmSJFfqecJBRsaAr47EALw_wcB

I have one of these does the job on my EQ5 Pro. 

[AstroKeith]

The USB C output is a PD type, so with the right cable it can be triggered to supply 12V.

[michael8554]

"So you might need a 5V to 12V-15V DC Converter."

"Would this provide the minimum 2 amps required by the mount ?

45W at "presumably 5V" = 9A.

At 12V that converts to roughly 3.75A, not counting conversion losses.

But a dedicated astro power tank at roughly the same price makes better sense.

Michael