Yes, bad idea. Lipos don't like to be stored over 50-60%. To protect the cells DJI batteries will self-discharge after 7-10 days down to 60%. That's where they should stay until you need them, at which point you need to charge them up to 100%...
@jwilson, you have yet to describe any legally actionable damages, in which case you could not get a court to entertain your claim, and won't find an attorney willing to take your case.
Failing to communicate when promised is not something that...