Hubble AM-5 installed for just under 2 months now, no major issues.
Seems the BMS charges to 100%, then to 94%, then 95%, then 96% etc, till eventually back to 100%.
Then it cycles again...
Initially I was worried when it stayed at 98% the first week, but I emailed Hubble and they said the BMS will manage the charge and as long as it reaches 100% once every 90 days, it's fine (cell balancing happens at 100% of course).
I've also read that Lion batteries should never remain at 100% , but this is what i've read somewhere.