GBP 5,785.20 inc VAT (~USD 7,500, rough conversion; UK dealer Wheel Freedom)
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Rear push-assist devices. A single powered wheel that clips under the chair and is started and stopped with a wrist-worn controller or switch.
Empulse (Sunrise Medical)
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Empulse (Sunrise Medical) · Rear push-assist devices · PA-010
Empulse R20 attendant wheelchair power pack
The Empulse R20 is an attendant wheelchair power pack from Sunrise Medical that helps a carer push. It weighs 9.9 lb with its lithium-ion battery, folds, and docks to the chair without tools. A 250 W motor offers three speeds of 1.2, 2.3 and 3.1 mph, and a free-run mode lets the user self-propel with the unit still fitted.
- Type
- attendant power pack
- Weight
- 9.9 lb with battery
- Max user weight
- 375 lb
- Max total weight
- 419 lb, wheelchair plus user
Empulse R20 key features
- Click-fix docking with no tools
- Three speed levels: 1.2, 2.3 and 3.1 mph
- Free-run mode for self-propelling
- One-button on and off, adjustable control unit
- Folds and travels in a supplied backpack
- 36 V lithium-ion battery of 209 to 216 Wh
Who the Empulse R20 suits
For carers and attendant-pushed users with folding or tilt-in-space manual chairs, especially on slopes of up to 10 degrees. The chair needs a box frame with tubing of 22 to 28 mm.
Figures for comparing
- Weight
- 4.5 kg (9.9 lb)
- Max user weight
- 170.1 kg (375 lb). 375 lb user; 419 lb max total wheelchair plus user
- Range
- 14 km (9 miles)
- Top speed
- 5 km/h (3.1 mph)
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
Empulse R20 specifications
| Type | attendant power pack |
|---|---|
| Weight | 9.9 lb with battery |
| Max user weight | 375 lb |
| Max total weight | 419 lb, wheelchair plus user |
| Top speed | 3.1 mph, three settings |
| Range | up to 9 miles |
| Motor | 250 W |
| Battery | lithium-ion, 36 V, 5.8 to 6 Ah |
| Seat widths | 13 to 23 in |
| Compatibility | box frame, tube diameter 22 to 28 mm |
| Max slope | 10 degrees |
| Maker country | Germany/USA |
| Brand | Empulse (Sunrise Medical) |
| Category | Power add-ons for manual wheelchairs, Rear push-assist devices |
| Catalog ID | PA-010 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
Empulse R20: common questions
Which wheelchairs does the Empulse R20 fit?
Most folding and tilt-in-space manual chairs with a box frame and tubing of 22 to 28 mm, in seat widths from 13 to 23 in.
Can the user still self-propel with the R20 attached?
Yes. A free-run mode lets the wheels turn freely so the user can push the handrims.
How much weight can the Empulse R20 move?
It is rated for a user of up to 375 lb and a combined wheelchair and user weight of 419 lb.
How to get a quote for the Empulse R20
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Power add-ons compared: front, rear and wheels
Front attachments give speed and distance, rear units give light help, power wheels boost each push. Here is how they differ and what to check.