NiteRider Epro EV/Emax+ EV Headlight and Taillight SetNiteRider Epro EV Emax+ EV Headlight and Taillight Set. The NightRider Epro EV brings NiteRider quality to Electric Bikes integrating with the ebike battery. The NightRider Emax+ 150 EV taillight brings NiteRider quality to Electric Bikes integrating with the ebike battery. Compatible with 6 to 80 Volts DC the Emax+ powers on with the bike and offers 6 modes. Headlamp powers ON with ignition switch 2 Modes Steady ON and Pulse Flash with Built in Mode