Those of us blessed enough to have electronic shifting have, at one point or another, inevitably had one of those rides where you realise you forgot to recharge your groupset.
For us mere mortals, it normally means an uncomfortable spin home or an embarrassed call for rescue, but the stakes are higher in the Giro d'Italia, and on stage 3 Sepp Kuss risked disaster to keep his bike functioning without the assistance of a mechanic.
