Somfy D14 Smart Home Replacement Battery 6V 3000mAh

Somfy D14 / D861E / D870E Series — 6V Ni-MH Replacement Battery (9 500 005)

This is a 6V 3000mAh Ni-MH battery for Somfy motorized blind and window covering motors. It fits the D14, D861E, D870E, D962E, and over 20 additional Somfy motor models that share the same 6V power rail and connector format. When the original cell degrades, the motor loses torque and eventually stops responding to remote commands — this battery restores full motor function without replacing the entire unit.

• D14 and D800-series motor compatibility: These Somfy tubular motors share a common 6V supply voltage, the same physical battery housing, and a consistent BMS handshake protocol across the range. One battery SKU covers the full cluster because Somfy standardized the power interface across this motor generation.
• Bench tested on actual hardware: We cycled this cell through charge and full motor-drive discharge on a D14 unit. The BMS accepted the cell without fault codes, and the motor completed full travel in both directions at rated torque from the first cycle.
• Post-install motor calibration: After swapping the battery on a Somfy tubular motor, the motor loses its stored travel limits. Run a full manual end-limit reset via the programming button on the motor head before using remote control — skipping this causes the shade to stop short or overdrive at the end of travel.

Why Somfy motors stall mid-travel after a battery swap

Somfy D-series motors monitor supply voltage continuously during movement. If a new Ni-MH cell hasn't completed its first full charge cycle, resting voltage can sit below 5.8V — enough to trigger the motor's undervoltage cutoff mid-stroke. The motor interprets this as an obstruction and halts. Charge the battery fully before installation and verify open-circuit voltage is at or above 7.2V before inserting it into the motor tube.

Somfy remote shows green but motor doesn't move after battery replacement

This is a travel-limit memory loss symptom, not a pairing fault. When power is interrupted — including during a battery swap — the D14 and D800-series motors clear their stored upper and lower limit positions. The remote communicates successfully but the motor has no valid travel window to execute. Press and hold the programming button on the motor until it jogs once, then re-enter the limit-setting sequence through your Somfy remote or Situo controller to restore movement.