I plan on using my laptop for Astrophotography and controlling my telescope. I don't have any idea how long the battery will last and will be in locations where there is no AC power available. The solution would seem to be if I could run the laptop via a DC Battery supply, if possible. The input looks to be 19.5 volts and my first searches don't show any power supplies like this. I'd also need to know the measurements of the connector going into the laptop.
I don't believe I'm the first person to consider doing this and am looking for any solutions others have found. Any suggestions are appreciated.
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