As ypedal said, not a dealer task just basic tools, time, and paying attention to connectors.
The three frame packs I have removed didn't have much glue resistance, putting them back and removing again seemed almost as tight as the first time, as the foam and silicon/glue is a well packed fit. I used a rope loop extension on the little battery pack loops and had frames upside down to lift it up as pulling out on both.
I can't charge at present bike parking sadly so I run rear pack into office, frame pack on way home. I prefer the bike handling without rear pack, but like everything else you ride around compromises for function.
Ideally I would like 32Ah of an A and B front pack with half of it removable for charging in office. I may be able to make an 11Ah auxiliary front/V fill frame pack, but no more than the standard, more packaging and appearance con's with minor performance and handling pros difficult to pull off like clean stock setup.
History: Front hub SS 200W, China E-mtb 200W, 3x A2B Metros, Commuter Booster beta, 2.4kW d/s w/DD kit, MAC 1.5kW road/flatbar 1250Wh EM3EV frame batt, BBS02 750W d/s MTB 1250Wh frame batt. All sold (except A2B Metros pending TLC from storage).