Adding another 6kW outboard charger to plug in through the dc port would allow using two J1772 public chargers at the same time or full use of a 14-50 RV outlet. I'm surprised I'm having trouble finding an off the shelf solution since most of the newer Leafs have a dc quick charge port and allow using the dc and 1772 charging at the same time. It would be plug and play.
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This guy does a really nice charging mod for the Leaf.
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Example II | Upgrade My Leaf
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