A budget 18 in battery scrubber with big tanks, for small warehouses, gyms and shops. Runtime is not published and the motor warranty is one year.
Amazon $1,999The Karhdir C5 18 in rates 3.1 among 17 in and up floor scrubbers; the Karhdir C4 15 in rates 2.8 among under 17 in ones. The Karhdir C4 15 in costs $380 less ($1,619 vs $1,999).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

An inexpensive battery scrubber with large tanks for a 15 in machine, for small warehouses and shops on a budget. Its runtime is not published.
Amazon $1,619Scores side by side
These two sit in different size classes (17 in and up and under 17 in), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Karhdir C5 18 in | Karhdir C4 15 in |
|---|---|---|
| Overall rating | 3.1/5 | 2.8/5 |
| Value 30% | 68 $111.06 per inch of path ($1,999, 18 in) | 69 $107.93 per inch of path ($1,619, 15 in) |
| Cleaning path 20% | 54 18 in cleaning path | 31 15 in cleaning path |
| Recovery tank 15% | 89 11 gal recovery tank | 59 5 gal recovery tank |
| Runtime 15% | 0 battery runtime not published, scored as zero | 0 battery runtime not published, scored as zero |
| Noise 5% | 50 sound level not published (neutral score used) | 50 sound level not published (neutral score used) |
| Warranty 15% | 0 1-year parts warranty | 0 1-year parts warranty |
Specifications
| Karhdir C5 18 in | Karhdir C4 15 in | |
|---|---|---|
| Cleaning | ||
| Cleaning path | 18 in | 15 in |
| Squeegee width | 24 in | 23 in |
| Brush speed | 200 rpm | 200 rpm |
| Maker productivity claim (not scored) | 24,000 sq ft/h | 24,000 sq ft/h |
| Tanks | ||
| Solution tank | 10 gal | 6 gal |
| Recovery tank | 11 gal | 5 gal |
| Power | ||
| Power | Battery | Battery |
| Build | ||
| Weight | 166 lb | 147 lb |
| Parts warranty | 1 year | 1 year |