Moved to Coil Builds from New Members
I think he's asking about battery builds
To the OP, i'm no expert but stacking battery cells it's not a good idea, don't know if the vamo chip have some safety system but play by the safe side and use a single 18650.
If you were asking for coil builds to run in your vamo, better check steam-engine.org, play with the tool to find the best safe build