The battery capacity is 93 watt-amperes, it works for about 2 hours, like all the others. You should not count on long-term operation, the battery for the workstation will most likely be needed as a backup battery if there is suddenly no electricity. Regarding the fan noise, at first there was a little more noise than now, I replaced the thermal paste with MX-4 (very poorly applied thermal paste to the GPU at the factory), fixed the factory defect thermal padding (see photo). I have a 7680 late version (September 2023), the engineers added a radiator over the 13850 processor...the cooling tubes were incorrectly installed to the RTX ....GPU (uneven, skewed).
I'll post a screenshot of the benchmark test