Quote:
Originally Posted by OneCosmos
I read this thread because I have the Eagle 4 pro and although I have a $1000 12v 70AH lithium battery it all works fine until I plug in the QHY268 then the computer just shuts down!
Testar suggested it was because the power isn’t regulated and that does indeed seem to be plausible and match empirical evidence.
Is this unit referred to in this thread a year ago still the best option and is it regulated?
https://itechworld.com.au/collection...-50ah-itech500
It is only 50AH but it would probably see me through a night with:
Eagle 4 Pro;
AZ-EQ6 pro;
QHY268 (cooled)
ASI174;
Esatto focuser
2x dew straps (controlled through ECCO);
I see there is a 100AH offering from itech but it is $2300 and more importantly, it weighs 17kg which is starting to not be very portable (albeit I’m only expecting to heave it out of the car and not carry it far). The 50AH version above is a more manageable 6.6kg.
Anything better given that a year has past so nice this thread was initiated?
Thanks |
If you already have a good $1000 70AH lithium battery why don't you just install a regulator between the battery and your computer and camera? If you just want to throw another thousand plus dollars at the problem, fair enough. Your problem isn't the difference between a 70AH and 100AH capacity.
You can solve the regulation problem with a 12V buck boost regulator. This is a regulator that does DC-DC conversion down, when the battery is at full charge and volts too high, and also converts up when the battery drops below the regulated voltage.
They are dead simple to wire, you buy the module, it has 4 connections
+/- DC volts in
and
+/- DC volts out
For about $10 - $20 you can buy modules that will regulate 3A or 5A max but for continuous you should draw less than the maximum eg 2A/4A. The boards are about the size of your thumb. I would power each device off a separate regulator module. I've used them for years to provide portable power for my solar eclipse tracking. If the pack of AA batteries I use starts to drop during the eclipse, the regulator just boosts it up to 12V. Of course that will only last minutes but that's enough to get through totality of an eclipse. Connected to a 70AH battery, you have a lot of juice between 12V and when the battery reaches it's low volt limit for the particular battery.