About this replacement
Simu 2447-3092 — 12V Li-ion Replacement Battery (9020569)
This 12V, 2500mAh Li-ion battery replaces the OEM cell in Simu motorized window treatment systems, including blind and shade motors running on the 2447-3092 platform. It matches the original voltage and connector spec directly. Capacity is rated at 30Wh, identical to the factory unit.
- 2447-3092 platform compatibility: The 2447-3092 motor controller uses a 12V rail with BMS handshake logic that verifies cell voltage on startup. This replacement cell presents the correct voltage profile to pass that check without triggering a fault state.
- Bench tested on actual hardware: We cycled this battery through repeated motor actuation draws. The BMS held stable across open, close, and tilt commands without tripping an undervoltage cutoff during peak draw.
- Post-install motor calibration: After replacing the battery, run a full open-to-close cycle manually before scheduling automation routines. Simu motors re-learn travel limits on the first powered cycle — skipping this step can cause the blind to stop short or overshoot its end position.
Why Simu motorized blinds stop mid-travel after a battery swap
Mid-travel stall after a battery replacement is almost always a lost travel limit, not a motor fault. The Simu motor controller stores upper and lower limit positions in volatile memory tied to battery continuity. When the old cell is removed, that memory can reset. The motor then has no reference point and defaults to a conservative mid-range stop to avoid mechanical damage. Re-run the limit-setting procedure from the Simu remote or app to restore full travel range.
Low battery alert showing immediately after fitting a new cell
A new battery showing a low-battery alert right away usually means the cell shipped at storage voltage — typically around 3.6–3.7V per cell, which sits below the 12V system's full-charge threshold. The Simu controller reads this as depleted rather than newly installed. Connect the motor to its charger or mains supply and allow a full charge cycle to complete before dismissing the alert. Once voltage climbs above 11.8V, the controller updates its status and the alert clears.