1: pick your stuff
2: put'em in the external charger, avoid using mod for charging
3: store them on battery cages, silicone ones or plastic!
4: use them close by its 90% total: never empty your batteries at all, reduce lifespam of your cells,
5: never leave charger unattended, charge over solid surface, prefer fresh ambience for this, and also avoid overcharge, once they are done, take'em away.
batteries are shipped with less than 50% charge for security reasons, give them a fresh charge and balance when new,
Regards,