Panasonic LC-X1242P 12V 42Ah Sealed Lead Acid Battery

Long-cycle commercial-grade sealed lead-acid battery for access control and surveillance backup applications. Designed for 4-5 year service life under typical commercial duty cycle.

Deployment context

Backup battery for access power supplies (LSP FPO150, Altronix AL600ULB) and rack UPS systems. Sized for 4-8 hour runtime on typical 6-12A continuous loads.

Load characteristics & current behavior

42Ah at 20-hour discharge rate. Discharge limit ~30% depth-of-discharge for commercial cycle life. AGM (absorbed glass mat) — no spill, no maintenance, no ventilation required.

Failure & backup behavior

Replacement schedule: every 4-5 years on typical commercial load profile. After year 3, capacity degrades ~10-15% per year. Replacement before failure prevents access lockout incidents during outages.

UL / safety standards

UL recognized, CSA. ABS plastic case, flame-retardant. Compatible with UPS-designed and access-power applications (not for engine-start service).

Runtime considerations

At 6A continuous load: ~5 hours real-world (after derating). At 12A continuous: ~2.5 hours real-world. Pair two in parallel for double capacity.

Commonly paired hardware

Altronix AL400ULB / AL600ULB / FPO150 power supplies · Eaton or APC rack UPS (compatible cell chemistry) · battery wiring kit with appropriate ring terminals

Reference: Power Supply Sizing Guide · Access Control Buying Guide