I haven't needed such a thing yet- other than my usual engagement of sleep mode so my systems can rest, my charge has remained at a constant.
I fear that may not be possible simply due to the nature of this world- but still, creating these as some sort of emergency back-up if something ever does happen is a very good idea. May take a while to develop, of course.
no subject
I fear that may not be possible simply due to the nature of this world- but still, creating these as some sort of emergency back-up if something ever does happen is a very good idea. May take a while to develop, of course.