The DSC BD4-12 12V 4Ah Sealed Lead Acid Backup Battery is a factory-spec replacement cell for DSC security panels and compatible smaller PowerSeries panel installations and accessory power enclosures. AGM construction, standard F1 (0.187" Faston tab) terminals, drop-in replacement when you are matching what was originally in the can.
What this battery does
Sealed lead acid chemistry holds a charge in standby for years and delivers full output the moment AC power drops. Mounted inside the panel enclosure, it keeps the system armed, the keypad lit, and the communicator dialing during a power outage or a cut line. A common middle-of-the-family pick. Enough capacity to ride through a meaningful outage on a modest PowerSeries hardwired panel, small enough to fit cans where a 7Ah will not.
Specifications
- Voltage: 12V DC
- Capacity: 4Ah (4000 mAh)
- Chemistry: Sealed Lead Acid (SLA), AGM construction
- Terminal type: F1 (0.187" Faston tab)
- Typical compatibility: smaller PowerSeries panel installations and accessory power enclosures
- Country of origin: China
Honest note on runtime
Runtime varies with panel current draw and accessory load. The Ah label is not hours of backup. Size the battery from the panel installation manual, not the case sticker. A heavily loaded panel on a small battery will trip a low-voltage trouble within an hour. A right-sized cell will ride through a multi-day outage.
Replacement schedule
Plan to swap SLA batteries every three to five years. Capacity loss is gradual and the panel will throw a battery-trouble condition before the cell fails completely. Keep a spare on the truck for service calls.
Other capacities in the DSC SLA family
Match the replacement to whatever shipped with the panel. SS&Si stocks the full DSC backup battery lineup:
