Yes Bab, you can replace with 78-000-128-03 and they can be mixed with the older battery, they are the same specs.
I am using Unity600 . Now need to replace BBU for SPA . My current partnumber on BBU is : 078-000-094-00 now want to replace it with one of the follow partnumbers : 078-000-128-03 078-000-192-00 jut want to make sure . Are above partnumbers ok ? Can I replace my current partnumber with one of above ?
Spare partnumbers for BBU