According to Schwinn Fitness, the Schwinn DX 900 stationary bike uses an A76-size button battery. This easy to install and replace battery has 1.5 volts. It is commonly used as a replacement for the following types of batteries: 157, 303, 357, AG13, EPX76, LR44, S76, SG13 and SR44.
Schwinn Fitness states that the Schwinn 900 DX helps users shape and monitor workouts to increase energy levels, improve cardiovascular and aerobic fitness and develop lower-body muscle strength. The Schwinn DX 900 is a durable exercise bike, designed to be user-friendly and comfortable for people of all ages and different experience levels.