Seven batches of motorized treadmills, including four batches sold on JD.com, were unsafe, Shanghai’s market watchdog said yesterday.

They failed on two safety indexes, the running table and electrical safety, the Shanghai Administration for Market Regulation said.

The former failure will lead to falls, while the latter could cause electric shocks.

A batch of treadmills branded Chislim which were sold on JD.com failed both indexes, and another batch branded GSGC sold on Suning’s Yigou site failed for electrical safety.

Another batch branded XQiao and sold by the Tianlin branch of supermarket chain Trust-Mart failed on both counts.

In total, 70 batches of treadmills were inspected.