About this replacement
Tineco iFloor 2.0 Slim / IFLOOR S5 FW150100EU — 22.2V Li-ion Replacement Battery (CL2020-6S1P-01B)
This 22.2V 2500mAh (55.5Wh) lithium-ion battery replaces part number CL2020-6S1P-01B in the Tineco iFloor 2.0 Slim and IFLOOR S5 FW150100EU wet-dry cordless vacuums. It powers the motorised cleaning head, suction motor, and onboard electronics. If your original battery no longer holds charge or cuts out mid-clean, this is the direct swap.
- iFloor 2.0 Slim and IFLOOR S5 FW150100EU compatibility: Both models share the same 22.2V six-cell architecture and use the CL2020-6S1P-01B cell pack. The connector pinout and BMS communication protocol are identical across this platform, so one battery fits both without modification.
- Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the iFloor 2.0 Slim motor assembly. The BMS responded correctly to overcurrent events, balanced cells after each charge cycle, and passed voltage at the connector within the expected 22.2V nominal range throughout testing.
- Dock charging discipline for this vacuum: Do not leave the iFloor on the charging dock continuously between uses. Unlike some cordless tools, this vacuum's charger does not switch to a true maintenance mode — prolonged dock contact applies a low-level trickle that accelerates capacity fade in Li-ion cells. Charge to full, then remove from the dock.
Suction dropping before the battery indicator reaches low
This happens when the suction motor has to work harder than rated — usually because a filter is partially blocked or the dirty-water tank needs emptying. Under restricted airflow, the motor draws excess current, and the BMS throttles power to protect the cells before the indicator registers low battery. The vacuum feels like it's losing charge when it's actually hitting a current ceiling. Clear the filter and tank first — if suction restores immediately, the battery is not the cause.
Motor cutting out mid-clean and recovering after a few seconds
This is a BMS overcurrent trip, not a dead battery. It typically happens when sustained restricted suction — from a clogged filter or blocked nozzle — forces the motor to pull more current than the BMS allows. The BMS cuts the output, the cells recover to a safe voltage within seconds, and the vacuum restarts. If this happens repeatedly in one session, turn off the vacuum, check and rinse the filter, and confirm the nozzle path is clear before resuming. A fully charged pack should read above 25V at the connector; if it reads below 22V at rest, the cells have degraded and the pack needs replacing.