About this replacement
Dyson 360 Heurist Robot — 14.8V Li-ion Replacement Battery (RB02)
This 14.8V, 6000mAh (88.8Wh) Li-ion battery replaces the OEM RB02 pack in the Dyson 360 Heurist Robot vacuum. It powers the drive motors, suction motor, and onboard navigation system that the Heurist uses for autonomous room mapping. When the original cell degrades and cleaning cycles shorten noticeably, this is the direct replacement.
- 360 Heurist platform fit: The Heurist runs a shared power bus across the suction motor and vision-navigation system. The RB02 pack communicates with the robot's BMS at 14.8V nominal — swapping to a different voltage or pack format breaks that handshake and the robot will not initialise a cleaning cycle.
- Bench tested on actual hardware: We cycled this pack on a 360 Heurist under simulated mixed-surface load — hard floor transitions to carpet. The BMS held voltage above the 12.5V low-cell cutoff throughout and did not trigger a premature shutdown on the suction motor's draw spike during carpet engagement.
- Dock charging discipline: Do not leave the Heurist on the charging dock continuously between uses. The 360 Heurist applies a trickle charge when the pack sits at full capacity on the dock, and sustained trickle charge accelerates Li-ion cell degradation measurably. Charge to full, then remove the robot from the dock.
Suction dropping before the battery indicator reaches low on the Heurist
The 360 Heurist pulls significantly more current when the filter is partially blocked — the suction motor compensates for restricted airflow by drawing harder. A degraded cell cannot sustain the voltage under that elevated draw, so suction drops even though the battery indicator still reads mid-charge. The BMS reads cell voltage, not remaining capacity, so a sagging cell can display as charged while delivering well under rated output. Check and clean the filter first; if suction drops still occur on a clean filter, the battery cell is no longer holding voltage under load.
Motor cuts out mid-cycle then recovers after a few seconds
This is a BMS overcurrent trip, not a motor fault. When suction is restricted — blocked brush bar, clogged filter, or debris in the intake — the motor draws current above the pack's rated limit and the BMS opens the circuit to protect the cells. The BMS resets automatically after a short thermal pause, which is why the robot appears to recover and then repeats the cut-out. Clear any blockage at the brush bar and intake, clean the filter, and restart the cycle. If the cut-out continues on a clear airpath, measure pack voltage under load — a healthy RB02 should hold above 13.5V during normal operation.