How do I adjust eBike brakes?

Hydraulic disc brakes (common on quality eBikes) are largely self-adjusting but may need bleeding when the lever feels spongy. Mechanical disc brakes need periodic cable tension adjustment and caliper alignment. Rim brakes require pad alignment and cable tension. For hydraulic systems, brake bleeding is a 30-minute DIY job with a bleed kit or a $50 service at your local bike shop.