Onyx 21" Lithium-Ion Floor Burnisher – SXi, Single Battery

The Onyx SXi 21" Lithium-Ion Burnisher delivers powerful, eco-friendly performance in a compact, easy-to-use design. Its patented floating shroud and advanced dust collection system capture fine polymer dust during operation, eliminating the need for dust mopping. The integrated micro-filter vacuum bag traps particles as small as 0.5 microns, improving indoor air quality while meeting strict Green Seal GS-42 and LEED standards.

Powered by lithium iron phosphate battery technology, this model runs quietly and efficiently, avoiding the noise and emissions of propane alternatives. With up to 2 hours of runtime per charge, the SXi combines convenience, high productivity, and professional results, making it a reliable choice for schools, hospitals, and commercial facilities.

Included in Your Package:

• Onyx 21" Lithium-Ion Powered Floor Burnisher

• Single 60 AH Lithium Iron Phosphate Battery

• Floating Dust Containment Shroud

• Integrated Micro-Filter Vacuum Bag

• Onboard Smart Battery Charger

Key Features

• Lithium-Ion Battery Powered – Long runtime, fast recharge, no cords, no fuel.
• Zero Emissions & Ultra-Quiet – Safe for schools, hospitals, retail, and high-traffic indoor spaces.
• Propane-Grade Performance – All the gloss, none of the fumes.
• Fewer Passes, Higher Gloss – Engineered for maximum shine with reduced labor and pad use.
• Three Head Size Options – Easy head size change from 21", 24" or 27". Can we ordered in any of these three head sizes. 
• Configuration Versatility – Variable speed range (600 - 1,800 RPM), onboard 10-gallon water tank for stripping/polishing use, wide range of pad/brush down-force adjustments.
• Advanced Dust Control – Cleaner air, healthier workspace, and superior finish quality.

Specifications

• Working Width: 21"

• Motor Power: 5 HP (3.75 kW)

• System Voltage: 72 V

• Battery Capacity: 60 AH / 4.32 kWh (single battery)

• Battery Life: 2,500 cycles

• Runtime: Up to 2 hours per charge

• Charge Time: 4.8 hours

• Coverage Rate: Up to 34,000 sq. ft. per hour

• Pad Speed: 1,050–1,800 RPM (variable)

• Sound Level: <63 dBA

• Pad Pressure: 20–120 lbs (variable)

• Dimensions: 29"W × 64"L × 42"H

• Weight: 245 lbs (with battery)

• Water/Solution Tank: 10 gallons (disconnected in burnisher mode)

Product Documents