Why Your Wheelchair Doesn't Go as Far as the Brochure Says

"Rated 25 kilometers." Then the chair dies at sixteen, and the owner wants to know who lied. Nobody lied, exactly — but the number on the brochure and the number under your weight are describing different planets. Here's what eats the range, roughly how much each bite takes, and how to plan a real day around it.

The test behind the brochure number

Manufacturers usually quote flat-ground, mild-temperature, standard-weight runs at steady low speed. It's not deception; it's a lab convention — the same one that gives cars their optimistic consumption figures. Real life is a different test.

What each factor costs you

Your weight. Every extra kilogram is paid at the motor. Between a 60 kg rider and a 100 kg rider on the same chair, expect roughly 10–15% less range for the heavier one.

Slopes. The single biggest thief. A route with regular ramps can cut range by a third; a hilly town can halve it. Motors also heat up on long climbs, and hot motors draw more.

Temperature. Below about 5 °C, lithium chemistry gets sluggish: expect 20–30% less range in real winter, and a meter that lies optimistically while it happens.

Tires. Soft tires are rolling resistance made visible — under-inflated pneumatics can quietly cost 10%. Worn treads on smooth floors, similar story.

Your right hand. Full-throttle starts and hard stops can cost 15% versus gentle joystick work. Range-testing drivers consistently beat anxious ones.

The honest planning rule

Take the rated figure and work with 60–70% of it for a normal mixed day. A "25 km" chair you plan around 16 km; a "40 km" chair, around 26. If your day includes hills or winter cold, take 50%. Annoying? A little. But it's the difference between planning and hoping — and the battery meter stays honest if you plan with the discounted number.

Buying advice hiding in the math

Choose by realistic day, not brochure fantasy. If your honest weekly long trip is 15 km of mixed terrain, a chair rated 20 km will feel tight within a year as the battery ages; one rated 35–40 leaves margin for battery fade (all packs lose capacity over years — that's chemistry, not a defect) and cold days. Range you don't use every day isn't wasted; it's the buffer that keeps year-three feeling like year-one.

Comparing models? Our range listings quote rated figures — apply the discount yourself, and ask us anything about your routes. We'd rather answer a planning question than a breakdown call.

Explore further: browse the full electric wheelchair range, read our frequently asked questions, or contact the J&J Mobility team for expert advice.