Ecovacs Deebot Ozmo 900 14.4V Replacement Battery S01-LI-148

Ecovacs Deebot Ozmo 900 Series — 14.4V Li-ion Replacement Battery (S01-LI-148-2600)

This 14.4V 2600mAh lithium-ion battery replaces the original power cell in the Ecovacs Deebot Ozmo 900, 901, 905, and 930 robot vacuums, along with 43 additional compatible models. It slots into the underside battery bay and connects via the original multi-pin connector. Voltage and capacity match OEM spec: 14.4V, 2600mAh (37.44Wh).

• Ozmo 900 series compatibility: The 900, 901, 905, and 930 all share the same 14.4V battery rail, connector pinout, and BMS handshake protocol. One cell fits all four without any modification to the bay or wiring.
• Bench tested on actual hardware: We ran this cell through full charge-discharge cycles on the Ozmo 900 platform. The BMS communicated correctly with the dock charger, accepted charge without fault codes, and discharged evenly across cells with no mid-cycle cutoff.
• Dock charging habit on robot vacuums: Do not leave the Deebot on the dock permanently between uses. Continuous trickle charging accelerates capacity fade on lithium cells in this format. Charge to full, then lift the unit off the dock until the next scheduled run.

Suction dropping before the battery indicator reaches low

The Ozmo 900 motor draws significantly more current when the filter is partially blocked or the brush roll is restricted. When draw spikes above the BMS threshold, the cell voltage sags — the motor slows and suction drops, even though the battery indicator still shows a mid or high charge level. This is not a battery fault. Clean the filter and clear the brush roll, then retest. If suction stays consistent through a full cycle after cleaning, the battery is working correctly.

Motor cuts out mid-cycle then recovers after a short pause

A brief cutout followed by automatic recovery is a BMS overcurrent trip, not a motor failure. It triggers when sustained high motor draw — usually from a blocked filter or tangled brush — pushes current past the cell's protection threshold. The BMS disconnects the load for a few seconds, then resets once current demand falls. Check and clean the filter first. If trips continue on a clean filter, measure resting voltage at the dock contacts — it should read between 16.4V and 16.8V at full charge.