Altronix BT124 12V 4Ah Rechargeable Sealed Lead Acid Battery

The Altronix BT124 Rechargeable Sealed Lead Acid (SLA) Battery is a compact, maintenance-free 12VDC, 4Ah backup battery designed for security systems, access control equipment, surveillance installations, and fire alarm applications. Featuring sealed, non-spillable construction and F1 Faston 0.187-inch terminals, the BT124 provides rechargeable standby power when connected to a compatible 12VDC power supply/charger. The battery supports up to five years of standby service or more than 260 complete discharge cycles under manufacturer-specified conditions. Its compact housing measures approximately 3.54 inches long, 2.75 inches wide, and 4.13 inches in overall height, with a weight of 2.3 pounds.

Altronix BT124 12VDC 4Ah Rechargeable Sealed Lead Acid Backup Battery

The Altronix BT124 Rechargeable Battery provides dependable 12VDC standby power for electronic security, fire alarm, access control, and video surveillance systems requiring a compact sealed lead acid power source. Designed for integration with compatible Altronix power supply/chargers and other equipment supporting 12-volt SLA batteries, the BT124 stores electrical energy for use during AC power interruptions. Its 4 amp-hour capacity supports backup operation for connected alarm panels, access control components, monitoring equipment, and auxiliary security devices, subject to the system's electrical load and required standby duration. The battery features sealed, non-spillable construction that eliminates routine electrolyte replenishment and minimizes maintenance requirements. Its compact footprint makes it suitable for installation inside compatible security equipment cabinets, power supply enclosures, and auxiliary battery compartments.

The BT124 features a nominal output voltage of 12VDC and a rated capacity of 4Ah at the 20-hour discharge rate, measured to a final voltage of 1.75 volts per cell at 77 F (25 C). Manufacturer specifications identify a recommended float charging voltage of 13.5 to 13.8 VDC and a maximum charging current limit of 1.05A. Electrical connections use standard F1 Faston Tab187 terminals, providing compatibility with appropriate battery connectors and charger leads. The battery measures approximately 3.54 inches long, 2.75 inches wide, and 3.93 inches high, with an overall terminal height of 4.13 inches. Its approximate net weight is 2.3 pounds (1.04 kilograms). Specified operating conditions include a discharge temperature range of 5 F to 122 F (-15 C to 50 C) and a charging temperature range of 5 F to 104 F (-15 C to 40 C), with a nominal operating temperature of 77 F (25 C).

For security and life-safety applications, the Altronix BT124 serves as a rechargeable standby power source that supports continued equipment operation when primary AC power becomes unavailable. When connected to a compatible power supply with battery charging and automatic switchover capabilities, the stored battery energy can supply the connected DC load during an electrical outage. Common applications include burglar alarm control panels, electronic access control systems, security monitoring equipment, CCTV installations, and compatible fire alarm power supplies. The 4Ah rating represents nominal energy storage capacity rather than a guaranteed operating duration; actual standby time depends on system current consumption, battery age, operating temperature, discharge rate, and equipment cutoff voltage. Fire alarm and other life-safety installations require battery capacity calculations based on the applicable control panel specifications and regulatory standby requirements. The battery's sealed construction supports use within equipment enclosures designed for rechargeable SLA batteries, while its maintenance-free design removes the need for routine water addition.

The BT124 is compatible with selected Altronix power supply and battery charging systems, including configurations such as the AL62412C and SMP312C that incorporate a 12VDC/4Ah rechargeable battery. Installation requires a suitable battery compartment, correct polarity, secure terminal connections, and a charging circuit configured for the battery's specified voltage and current limits. Altronix identifies the BT124 as part of its rechargeable SLA battery family alongside the BT126 12VDC/7Ah, BT1212 12VDC/12Ah, and BT1240 12VDC/40Ah models, allowing installers to select battery capacity according to equipment requirements and enclosure space. Manufacturer literature specifies up to five years of standby service or more than 260 cycles at 100% discharge for general-purpose applications, although actual service life varies with charging conditions, temperature, and discharge frequency. The BT124 provides a compact replacement or new-installation battery solution for compatible 12VDC security equipment. Replacement installations should verify voltage, capacity, terminal dimensions, physical fit, and the original equipment manufacturer's battery requirements before commissioning.