Due to very low energy drain those devices could use AAs or other alkaline cells...
I understand but with evolving AP use with all kinds of mounts, cooled cameras, and accessories, power is NOT that simple. Let me explain why the problem hadn't been solved yet...
Real life scenario...
With my compact setup (SpaceCat/SkyGuider Pro) I had basically two power needs at the moment, will be more in future since now I see the potential... (e.g., powering camera directly instead of carrying batteries, even re-charging camera batteries if needed, etc.)
1. A dew heater strap that serves SpaceCat; dew heater has Car plug-in so it plugs into DC
2. A cooler that serves a7S; ideally I would like cooler to draw directly from this power source but at the moment it uses a PSU, so it plugs into AC
Night before last I tried Stanley Professional Power Station... using the same two ports (DC Car port and AC plug-in); Stanley was 100% charged and it died in about 15 minutes to 0% as I plugged in the cooler via AC port. Stanley was running somewhat OK with the DC Car port 'only' plugged in. AC basically killed it instantly. I was quite surprised as well as disappointed.
Yesterday Explorer 1000 arrived and I charged it to 100 and gave it the same scenario. It was at about 85% after my almost full night's run which was about 4 hours. Explorer 1000 could last me many nights without charging with this scenario.
I know AC inverter is NOT an ideal way to go about using portable power. So, I am re-designing cooler so it can draw directly from 12V DC. This switch to DC will further reduce the load and increase power performance. In short, it can run many AP devices for the night, no problem, AC or DC. Running Mach 2 for example off of this should be simple and straightforward.
This is beyond what you may have experienced in a portable power. Gone are the days of deep cycle batteries, gone a the days of Celestron power tank, gone are the days of 'fill-in your power sources'. It is not too heavy to carry and looks elegant and built to last. It is very expensive; but if you can cut your other expenses a bit, it should be worth the investment.
I foresee the potential it has to pretty much run any mount, any camera and all the accessories in the field or backyard. Once you have this, you wouldn't want to plug in even if you had plug-in power right next you.
Lastly, say if you DO want to plug into a power source, this can then play the role of a master/central adapter where everything else plugs in. This becomes the central HUB in that scenario. If you are out in a sunny location for days on end, it can be charged with up to two solar panels at the same time (...most AP use will NOT need panels). If nothing else, it can be charged via a Car. All in all, highly recommended. I am surprised! Regards
Edited by mmalik, 19 August 2020 - 09:11 AM.