amberwolf wrote:As long as the new pack and the old one are at the same voltage when you connect it, sure.
But since the charging port is only capable of a fairly low current, normally, then if there is much of a difference, the current flow between the packs could damage the connector and/or wiring.
It's also possible it could damage the pack(s), depending on what their limitations are.
I have a new ? for you, will paralleling my slb 12 amp with my Lifepo4 20 amp will it do bad things to slb with them having a 8 amp difference ?