NMC chemistries: 70-80% charge, minimal humidity (corrosion of electronics is always a concern), very cold, and in a fire-proof container. Pb chemistries (auto

NMC chemistries: 70-80% charge, minimal humidity (corrosion of electronics is always a concern), very cold, and in a fire-proof container. Pb chemistries (automotive, boat, etc.): trickle charge with periodic desulphation.