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...t-upsuser/2005-September/000218.html You will note that neither battery charge nor runtime is listed there. It is possible that a better value for the state-of-chage could be calculated, similar to the other protocols: https://github.com/networkupstools/nut/blob/master/drivers/tripplite_usb.c#L1129 However, calculating runtime usually requires the UPS to do a battery test, and observe the voltage while under load. This unit might not be capable of doing that. -- Charles Lepple clepple at gmail

Hello, I own an older Tripp Lite SMART3000RM2U (protocol 3003). It does not work with usbhid-ups but it mostly works with the tripplite_usb driver (nut 2.7.1, the latest in the Gentoo tree), in the sense that the status (on line, on battery, etc.) is detected correctly, the machine is shut down on critical battery, and I can even get some information from the UPS. This is how it all looks:

...; You will note that neither battery charge nor runtime is listed > there. > > It is possible that a better value for the state-of-chage could be > calculated, similar to the other protocols: > > https://github.com/networkupstools/nut/blob/master/drivers/tripplite_usb.c#L1129 Many thanks for the pointer. I tried something like the above but the "B" message is not answered (errors are spit by libusb too). However, I did notice that the battery voltage is available in the 3003 protocol (as a response to the "D" message), so I computed the battery ch...