Rivian-Backed Pedal-by-Wire E-Bike Battery Dies: What Happens Next?

The ALSO TM-B, an e-bike linked to Rivian, has drawn attention for replacing the traditional chain and mechanical pedal linkage with a pedal-by-wire system. Instead of a physical connection, copper wires send signals from the pedals to the rear wheel, making it one of the most radical e-bike designs in years. But the innovation raises a critical question: what happens when the battery runs out? In a recent test, someone rode the TM-B until its battery died, and the results were unexpected. Without power, the bike’s electronic controls shut down, leaving the rider unable to pedal in the conventional sense. The experience highlights both the promise and the risks of removing mechanical redundancy in favor of digital control. As e-bikes evolve toward more integrated electronics, the TM-B’s behavior at zero charge serves as a cautionary tale for designers and riders alike. The takeaway: cutting-edge tech can fail in ways that old-school chains never will.