[jdrtdrf]

the connector is almost the only thing that matters to make it work -- you can wire up LIPOs with varying numbers of cells and it will happily work, so long as you don't go too far above specs. I've run mine in 3S, 4S, and even a 6S config, though 6S is probably really too far.

[Havoc]

Truth be told for me it was entirely a cost thing. Was looking at name brand chargers that can do 60W power delivery & they cost more than the iron itself.