Sunrise Medical · road scooter
Used Sunrise Medical Sterling S425
The Sterling S425 by Sunrise Medical is a compact Class 3 road scooter with a top speed of 8 mph and a stated range of up to 42 km (26 miles). It has all-round adjustable suspension, 30 cm (12-inch) pneumatic tyres, LED lights and a swivelling seat that adjusts for height, depth and recline.
At a glance
8 mph
Top speed
Up to 26 miles
Range
150 kg
Maximum user weight
117 kg
Weight (with batteries)
In stock now
None in stock at the moment.
Specification
Manufacturer's figures.
| Performance | |
|---|---|
| Top speed | 8 mph (12 km/h) |
| Class | Class 3 (road) |
| Range | Up to 42 km / 26 miles (maker's figure; the owner's manual's ISO test gives 44 km) |
| Batteries | 2 × 12V 55Ah, maintenance-free |
| Charger | 8A; charging socket on the tiller |
| Motor power (peak) | 1200 W |
| Maximum safe slope | 8° at 150 kg |
| Kerb height | Up to 50 mm |
| Ground clearance | 60 mm |
| Turning radius | 1.5 m |
| Wheels | 30 cm (12") front and rear |
| Tyres | Pneumatic; some have the optional solid tyre kit |
| Suspension | All-round, adjustable front and rear; some have the optional heavy-duty rear kit |
| Brakes | Disc brake, handle with locking feature |
| Lights | LED headlight, indicators, brake and position lights |
| Controls | Delta handlebar, wig-wag finger or thumb control, adjustable tiller |
| Size | |
| Length | 1350 mm |
| Width | 660 mm |
| Seat height | 450–500 mm (3 positions) |
| Seat width | 490 mm |
| Seat depth | 490 mm |
| Backrest height | 525 mm |
| Seat | Swivels and slides; adjustable recline; headrest; flip-up adjustable armrests |
| Weight | |
| Weight | 117 kg (with batteries) |
| Heaviest part | 35 kg (the seat) |
| Battery weight | 18 kg each |
| Maximum user weight | 150 kg / 23 st 8½ lb |
Before you buy a used Sterling S425
How fast does the Sterling S425 go?
Up to 8 mph. It is a Class 3 scooter, so it can be used on the road as well as on pavements.
How far will it go on a charge?
Up to 42 km (26 miles) is Sunrise Medical's figure, from its two 55Ah batteries (the owner's manual's ISO test gives 44 km). The distance you get depends on things like the rider's weight, hills, the weather and the age of the batteries.
What is the maximum user weight?
150 kg, or 23 st 8½ lb.
What can it climb?
Kerbs up to 50 mm and slopes up to 8 degrees (with a 150 kg rider). Always take kerbs head-on.
How is it charged?
Through a socket on the tiller, from an 8A charger. Each battery weighs 18 kg.
How does it compare with the S700?
The S700 is the bigger Sterling: 75Ah batteries, up to 45 km (28 miles), 13-inch tyres, 100 mm kerbs and riders up to 160 kg. The S425 is shorter (1350 mm against 1500 mm) and lighter (117 kg against 146 kg).
Is the Sterling S425 right for you?
Tell us how you’ll use it and we’ll say honestly if another model fits better.