Floor scrubber charges and tank refills calculator
Battery runtime and charges per job: hours_needed = area_sqft / practical_sqft_per_h; charges_needed = ceil(hours_needed / run_time_per_charge_h). Enter your numbers below; the formula and its source are shown under the result. Part of this calculation is derived by Warehouse Machines from sourced inputs.
Published run times are for continuous scrubbing; travel between areas uses battery too. Use the scrubber productivity calculator to get the practical rate.
The formulas
hours_needed = area_sqft / practical_sqft_per_h; charges_needed = ceil(hours_needed / run_time_per_charge_h)
Derived by Warehouse Machines from T5 Battery-Powered Walk-Behind Scrubber Specifications, disk (Tennant): no single source states this formula, so treat the result as an estimate.
Tennant states its run times are based on continuous scrubbing run times. The division and the rounding up are arithmetic by Warehouse Machines.
Worked example: Our arithmetic with T5 figures: 60,000 sq ft at 20,800 sq ft/h = 2.9 h; T5 standard batteries (4) 6 V 235 Ah run up to 5.5 hours, so 1 charge.
[src]tankfuls = ceil(hours_needed x flow_gpm x 60 / solution_tank_gal); refills = tankfuls - 1
Derived by Warehouse Machines from T5 Battery-Powered Walk-Behind Scrubber Specifications, disk (Tennant): no single source states this formula, so treat the result as an estimate.
Arithmetic by Warehouse Machines on the published solution tank capacity and solution flow setting; no source states this formula. Treat it as an estimate.
Worked example: T5 24 in (22.5 gal tank, 0.35 gpm middle setting) for 3 h: 3 x 0.35 x 60 = 63 gal; 63 / 22.5 = 2.8 -> 3 tankfuls, 2 refills.
[src]Estimate only. Use your own costs and real quotes for decisions.
Sources
- T5 Battery-Powered Walk-Behind Scrubber Specifications, disk (Tennant) (retrieved November 6, 2026)