Saflok DL-5 6V Replacement Battery for 459112 Door Lock

Saflok 459112 / 740012 / 885008 — 6V Alkaline Replacement Battery (DL-5)

This is a 6V, 2300mAh alkaline replacement battery for Saflok electronic door lock systems. It fits the 459112, 740012, and 885008 lock platforms, along with other models listed in the DL-5 series. Swap it when the lock starts beeping low-power warnings or stops responding to keycards and keypad entry.

• Multi-model fit across Saflok lock platforms: The 459112, 740012, and 885008 share the same DL-5 battery cavity, voltage rail, and contact orientation. All three pull 6V direct from this cell to power both the keypad circuit and the motor-driven latch mechanism.
• Bench tested on actual hardware: We cycled this cell through repeated keypad entry sequences and motor actuation on a Saflok lock unit. The voltage held stable across both the logic board and latch motor throughout the test draw.
• Post-swap access verification: After fitting a new DL-5, test every access method — keypad code, keycard, and any Bluetooth credential — before closing the door. Some Saflok firmware completes a handshake routine on first power-up that must finish before all access methods register correctly.

Why Saflok locks beep low battery immediately after a DL-5 swap

Saflok locks read battery voltage at the moment of insertion, before the cell has stabilised under load. If the battery sat in storage for an extended period, its resting voltage can read slightly low during that first measurement window. The lock's controller may flag a low-battery condition even with a genuine, unused alkaline cell. Remove and reinsert the battery to trigger a fresh voltage sample — this clears the false alarm in most cases.

Keycard and keypad stop working after DL-5 replacement

Power interruption during a battery swap can reset the lock's internal state. The latch motor may actuate, but the credential reader stays unresponsive because the firmware handshake did not complete. Remove the new DL-5, wait ten seconds, then reinsert it — this forces the lock to restart its initialisation sequence from the beginning. If the keypad still rejects valid codes after two power cycles, verify polarity and confirm the cell is seated flush against both contacts at 6V.