OK strange turn of events here. I returned the 2nd gen Anker battery and charged my Astro Pro2 (original) last night. Woke up this morning hooked it up to the Beresford Bushmaster MKII and it didn't turn off! I have literally had it on all day and it has not shut down??? Is it because of the fresh charge? I have no idea but it's great having the unit stay on. Hope this stays.