Cheers Pete, that makes sense about the cables! Reckon if I did go this way I'd avoid using them, as RichB has said, they're not ideal due to the losses involved.
Rich, I've looked into this 'fast charge' for lipo as it sounded a bit odd for a lipo to me too! The 1C rule being what I've always stuck to as per manufacturers recommendations.
According to the manual it seems the BC6's fast mode just stops the charge early, i.e. when it drops to 1/5th of the max current, rather than letting it run the charge current down to 1/10th of the max current, as you would on a full CC-CV charge cycle.
As you say Pete, balance charging is a little slower, so it'd make sense for it just to be a regular charge in that mode as well.
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