yes you are right I have found 7 day 24 hour timers so an hour a week would be OK? . interesting re the Panasonic..... sounds ideal really. but was thinking of something like the tucano carrera or maybe I should stump up for a BH emotion Panasonic bike.....Once a week timers are commonplace and a weekly top up is ok to prevent a battery emptying.
A better solution is having a current Panasonic unit bike with the 10 Ah battery which has an automatic sleep mode that would keep the battery safe for very many months or a year. Once the battery charge declines to about half charge and isn't touched for about two weeks, it "sleeps" by disconnecting its own BMS, thus eliminating further current drain from the cells.
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Lithium batteried laptops are taken on board, but I think the batteries should be in the hold.I guess you cant carry batteries on a plane?