Alarm Lock 1U106 Replacement Battery 6V 6000mAh Alkaline

Alarm Lock 1U106 / DL-10 Series — 6V Alkaline Replacement Battery

This 6V 6000mAh alkaline battery replaces the power source in Alarm Lock electronic door locks including the 1U106, DL-10, BP6, and BCA2500-4EWP-W9030EC. It drives the solenoid latch that controls authorized entry. Voltage and capacity match OEM spec exactly.

• Multi-model fit — 1U106, DL-10, BP6, BCA2500-4EWP-W9030EC: These Alarm Lock units share the same 6V battery bay and solenoid draw profile. The connector format and cell footprint (52.20 × 51.50 × 51.50mm) seat correctly across the series without modification.
• Bench tested on actual hardware: We ran this cell through lock cycle testing — solenoid engagement, keypad actuation, and standby draw. The battery held stable voltage across repeated latch cycles without triggering the low-voltage cutoff the lock's controller monitors.
• Post-swap access method verification: After replacing the battery, test every access method — keypad, keycard, and any Bluetooth entry — before closing the door. Some Alarm Lock controllers complete a firmware handshake after power interruption that must finish before all credential types are accepted again.

Solenoid latch hesitation on the DL-10 and 1U106 after battery swap

Both the DL-10 and 1U106 use a spring-loaded solenoid that draws a short, high-current pulse on every unlock event. If the replacement battery sat in storage for an extended period, its internal resistance may be elevated even at a full nominal voltage. This causes the solenoid to actuate sluggishly or click without fully retracting the latch. Fresh cells with low internal resistance handle the inrush current cleanly. If hesitation occurs, confirm open-circuit voltage is at or above 6.3V before installation.

Low battery warning appears immediately after fitting new cells

Alarm Lock controllers sample battery voltage within seconds of power restore. If the lock displays a low battery alert right after a swap, the most common cause is reversed polarity — the controller reads near-zero volts and flags it as depleted. The second cause is an alkaline cell that has already self-discharged during long shelf storage. Remove the battery, verify polarity against the bay markings, and check open-circuit voltage with a multimeter — it should read 6.2V or higher on a fresh alkaline pack before installation.