Neabot NoMo Q11 14.4V Replacement Battery 5200mAh

Neabot NoMo Q11 — 14.4V Li-ion Replacement Battery (C433-A3-4S2P)

This is a 14.4V 5200mAh (74.88Wh) lithium-ion replacement battery for the Neabot NoMo Q11 cordless stick vacuum. It fits the Q11 motor and charging circuit directly, using OEM part references C433-A3-4S2P and C1048A2. When the original cell pack degrades and suction drops noticeably earlier in each cleaning session, this is the swap that restores full motor power.

• NoMo Q11 motor rail compatibility: The Q11 runs a brushless motor on a 14.4V nominal rail. The 4S2P cell configuration matches the original pack's voltage curve and connector pinout, so the vacuum's power management circuit reads state-of-charge correctly from the first cycle.
• Bench tested on actual hardware: We cycled this pack through the Q11's BMS under both open-floor and carpet-load conditions. The BMS negotiated charge termination cleanly and did not throw a protection fault during sustained high-suction draws.
• Dock charging behaviour on the Q11: Do not leave the Q11 sitting on its charging dock indefinitely. The dock supplies a trickle current after the pack reaches full charge, and continuous exposure accelerates cell capacity fade. Charge to full and remove the vacuum from the dock until the next use.

Cordless vacuum losing suction before the battery indicator reaches low

This happens because the Q11's motor draws harder when airflow is restricted — a partially blocked filter forces it above its rated current. The BMS detects the voltage sag under that elevated draw and reduces output before the indicator registers low. The battery is not necessarily weak; the motor is working against a restriction. Clean or replace the filter first, then test suction. If suction still drops early with a clean filter and a fresh charge, check resting pack voltage — it should read at or above 16.0V off the charger.

Motor cuts out mid-session and then recovers after a short pause

This is a BMS overcurrent trip, not a dead battery. When the Q11 picks up a dense pile or runs against a blocked intake, current spikes past the BMS protection threshold and the pack disconnects to protect the cells. After 15–30 seconds the BMS resets and power returns. Clear the blockage, check that the filter is seated correctly, and resume. If trips continue on an unobstructed floor with a clean filter, measure pack voltage under load — a reading that drops below 12.0V under normal suction indicates a cell imbalance worth addressing.