New Onyx SXi Lithium-Ion Battery Floor Burnisher
Our Take (from the SES Sales Team)
“The SXi is for floor crews that want propane-style burnishing speed without bringing propane indoors. Onyx rates it at up to 34,000 square feet per hour with a 5 hp motor and variable pad pressure, and it runs on a 72-volt lithium iron phosphate battery with an onboard charger. At under 63 dBA with zero emissions, it fits schools, hospitals and stores that need floors done while people are in the building.
There are two choices to make. Head size: the 21-inch fits tighter areas, the 27-inch covers the most floor per pass, and the 24-inch sits in between. Battery: one 60 Ah battery gives about two hours of run time, and two batteries give about four hours for a longer shift, at the cost of 76 lb of extra weight.”
A 72-volt lithium battery burnisher built to match propane productivity
The Onyx SXi is a walk-behind, pad-assist high-speed floor burnisher powered by a 72-volt lithium iron phosphate (LFP) battery. Onyx built it to match the productivity of its propane burnishers, up to 34,000 square feet per hour, with zero emissions and low noise, so it can work in schools, hospitals, retail stores and other high-traffic indoor spaces. A 5 hp motor drives the pad at variable speed with adjustable pad pressure, and a floating shroud with a dust collection bag controls dust. Each SXi is ordered with a 21, 24 or 27 inch head and one or two batteries.
Choose your configuration
One battery or two?
| Single battery | Dual battery | |
|---|---|---|
| Battery | One 72 V, 60 Ah LFP (4.32 kWh) | Two 72 V LFP, 120 Ah total (8.64 kWh) |
| Run time | About 2 hours | About 4 hours |
| Machine weight | 326 lb | 402 lb |
| Head sizes | 21, 24 or 27 in | 21, 24 or 27 in |
| Best for | Shorter routes or charging between shifts | Longer burnishing shifts on one charge |
| Packages here | SXi-2101 (21 in), SXi-2401 (24 in), SXi-2701 (27 in) | SXi-2102 (21 in), SXi-2402 (24 in), SXi-2702 (27 in) |
Reading the model numbers: In Onyx SXi model numbers, the first two digits are the head size (21, 24 or 27 in) and the last two are the battery count: 01 is one 60 Ah battery and 02 is two batteries, 120 Ah total.
Features:
- Variable pad speed and pad pressure adjustable in fine increments, from 20 to 120 lb
- Real-time display of pad pressure, pad speed and remaining battery
- Onboard 13 A, 72 V smart charger
- LFP batteries rated for 2,500 cycles
- Onboard headlight, easy-remove pad driver and adjustable handle

Onyx SXi lithium burnisher
Onyx SXi
Specifications
| Models | Single battery | Dual battery |
| Burnishing Path | 21, 24 or 27 in (53, 61 or 69 cm) | |
| Motor | 5 hp (3.75 kW) | |
| Pad Speed | 1,000–2,000 rpm, variable | |
| Pad Pressure | 20–120 lb (9–54 kg), variable | |
| Productivity | Up to 34,000 sq ft/hr (3,160 m²/hr) | |
| System Voltage | 72 V DC | |
| Battery | 60 Ah (4.32 kWh) LFP | Two batteries, 120 Ah (8.64 kWh) LFP |
| Run Time | About 2 hr | About 4 hr |
| Charger | Onboard, 13 A / 72 V | |
| Battery Life | 2,500 cycles | |
| Battery Weight | 80 lb (36 kg) per battery | |
| Dust Control | Floating shroud with dust collection bag | |
| Operation | Walk-behind, pad assist | |
| Sound Level | Under 63 dBA | |
| Dimensions (L x W x H) | 64 x 29 x 42 in (163 x 74 x 107 cm) | |
| Weight | 326 lb (148 kg) | 402 lb (182 kg) |
| Model Numbers | SXi-2101, SXi-2401, SXi-2701 | SXi-2102, SXi-2402, SXi-2702 |
Technical specs may include optional equipment that is not included with all units.
| Option | Availability | Battery Type | Brush Speed (RPM) | Condition | Equipment Type | List Price | Machine Type | Manufacturer | Our Price | Power Source | Shipping Designation | Sound Level (dBA) | Specialty Category | Warranty Information | Unit | Purchase | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
New Onyx 24" Lithium-Ion Powered Floor Burnisher with Single Battery, 2 Hour + runtime.
ENONSXI-2401
|
Ships from Supplier - Availability May Vary | New | Buffers/Burnishers | 11,665.00 | Equipment | Onyx | 10,500.00 | Qualifies for Free/Flat Rate Shipping | Full Factory Warranty |
$11,665.00
$10,500.00/EA
10% discount
|
|||||||
|
New Onyx 21" Lithium-Ion Powered Floor Burnisher with Single Battery, 2 Hour + runtime.
ENONSXI-2101
|
Usually Ships in 3 to 5 Weeks | Lithium Ion | 2000 | New | Buffers/Burnishers | 11,665.00 | Equipment | Onyx | 10,500.00 | Battery | Qualifies for Free/Flat Rate Shipping | 63 | High Speed Battery | Full Factory Warranty |
$11,665.00
$10,500.00/EA
10% discount
|
||
|
New Onyx 27" Lithium-Ion Powered Floor Burnisher with Single Battery, 2 Hour + runtime.
ENONSXI-2701
|
Ships from Supplier - Availability May Vary | New | Buffers/Burnishers | 11,665.00 | Equipment | Onyx | 10,500.00 | Qualifies for Free/Flat Rate Shipping | Full Factory Warranty |
$11,665.00
$10,500.00/EA
10% discount
|
|||||||
|
New Onyx 27" Lithium-Ion Powered Floor Burnisher with Two Batteries, 4 Hour + runtime.
ENONSXI-2702
|
Ships from Supplier - Availability May Vary | New | Buffers/Burnishers | 14,495.00 | Equipment | Onyx | 13,045.00 | Qualifies for Free/Flat Rate Shipping | Full Factory Warranty |
$14,495.00
$13,045.00/EA
10% discount
|
|||||||
|
New Onyx 21" Lithium-Ion Powered Floor Burnisher with Two Batteries, 4 Hour + runtime.
ENONSXI-2102
|
Ships from Supplier - Availability May Vary | New | Buffers/Burnishers | 14,495.00 | Equipment | Onyx | 13,045.00 | Qualifies for Free/Flat Rate Shipping | Full Factory Warranty |
$14,495.00
$13,045.00/EA
10% discount
|
|||||||
|
New Onyx SX1 24" Lithium-Ion Floor Burnisher with Two Batteries, 4hour + runtime.
ENONSXI-2402
|
Ships from Supplier - Availability May Vary | New | Buffers/Burnishers | 14,495.00 | Equipment | Onyx | 13,045.00 | Qualifies for Free/Flat Rate Shipping | Full Factory Warranty |
$14,495.00
$13,045.00/EA
10% discount
|
