I have the Nikon DB-2 Anti Cold Battery Pack container. It is designed to operate the F3 in temperatures well below zero ºC in preference to any motor drive being used, this is to stop or at least reduce the possibility of static electrical lines on the film as the fast movement of film in ultra dry conditions that are often associated with extreme cold.
One limiting factor of the DB-2 is the cord is only 800mm long, which, when you run the lead up your sleeve and into an inner pocket, isn't quite long enough to allow you to place the camera body inside your centrally zippered jacket opening in-between exposures to keep it somewhat marginally warmer to use. This was the only minor limitation I've encountered in my few times using an F3 body in very cold weather; -30ºC and a bit lower, plus howling wind.
Some friends went to Antarctica with at least one F3 body equipped with a modified DB-2 unit. They re-made the lead to around 1150mm in length, as that seemed to work for the clothing they were wearing. Another downside of the design, is that the hole for the batteries, and consequentially where the DB-2 goes into, is right alongside the tripod hole in the base of the camera. I understand that at least on of their dogsleds was equipped with a very quick release tripod like mount, as any tripod, unless built like a brick outhouse, would be blown away.
The rechargeable battery pack for the MD4 Motor Drive, was mainly bought for the extra speed it could drive the camera at. Six frames per second with a fully charged rechargeable battery pack was possible; just.... But; you couldn't see or focus what you were pointing at, because you needed to lock the mirror up to attain that high frame exposure rate.