I have 4 Best Fortress LI660 units from 1995 and would like to improve the driver. Before I change things, I'd like to ask: Is anyone else using "bestfortress"? I'll assume "no"; otherwise please email me or post here, and also I'd like to know: Does 'upsdrvctl shutdown' cause poweroff to be delayed 10s like it ought to, or ?? Do you try to set the lowbatt runtime threshold and how does that go? Do you have a protocol spec? Would you like to test what I change?